On modern market building materials, various sheet finishing materials are presented in a wide range. These are chipboard and OSB boards, various types of plywood, plasterboard and other modifications. Despite this, the DSP board, the use of which is not limited only to interior work, deserves special consideration.

The unique structure of the material, which consists of seemingly incompatible ingredients, provides DSP with characteristics that are not only not inferior to analogues, but also superior to them in some respects. Relatively low cost, strength and reliability, weather resistance and ease of installation make the material indispensable for any construction and repair work.

In most cases, for the installation of DSP boards, the use of a wooden or metal frame is necessary, so it is worth stocking up in advance necessary material and fasteners.

What is a DSP board?

Wood chips and cement are used to produce this unique building material. The wooden filler is pre-crushed and sorted, after which it is antiseptically treated with calcium and aluminum chlorides. The components are thoroughly mixed, and the resulting mass is poured into special molds. As a rule, the composition of a cement-bonded particle board (CSB) includes:

• Portland cement - 65%;
• Wood shavings - 24%;
• Water - from 8.5 to 9%;
• Hydration and mineral supplements - from 2 to 2.5%.

To reduce internal stresses and more efficient pressing, non-ferrous materials can be added to the prepared mixture. a large number of fuel oil, or industrial oil. The filled forms are stacked and pressed. Working pressure can vary from 1.7 to 6.5 MPa. To accelerate hydration and hardening of the mixture, it is subjected to intense heating for 8 hours.

Important!

Elasticity wood shavings compensates for cement shrinkage, therefore, even during the drying process, the dimensions of the slabs remain unchanged.

After removal from the formwork, DSP plate transported to a technological warehouse, where it finally dries under natural conditions. The final stage of production is hot air blowing, cutting, polishing and delivery to the storage location.

DSP board: technical characteristics

Before using the material, it is necessary to study its basic operational and technical characteristics. Currently, according to GOST 26816-2016, the domestic industry produces two types of CBPB boards, the characteristics of which are given in the table:

Options	TsSP-1	TsSP-2
Bending elasticity index, MPa
Surface hardness, MPa
Thermal conductivity of the material, W/(m °C)
Specific heat capacity, kJ/kg °C
Specific resistance to fastener removal, N/m
Frost resistance of the material
Number of freeze/thaw cycles
Residual strength, %
Resistance to changes in humidity and temperature
Strength reduction (20 cycles), %
Increase in sample thickness (20 cycles), %

Such performance characteristics allow the material to be used in a wide variety of areas of repair and construction work.

Scope of application of CBPB boards

As mentioned above, DSP boards, the use of which ensures high mechanical strength of the structures being created, are widely used in construction, repair and finishing work, in particular:

• In the manufacture of formwork foundations and other monolithic reinforced structures. The use of DSP significantly simplifies the installation process; in addition, this design prevents concrete leakage and ensures the formation of smooth side walls that do not require subsequent plastering.
• When covering walls and erecting . In most cases DSP sheets attached to a pre-assembled metal or wooden frame. The thickness of the sheets in this case ranges from 8 to 12 mm. For fastening, self-tapping screws are most often used; it is also possible to use screws or nails as fasteners. In some cases, when leveling walls, special adhesive polymer mixtures can be used.
• Application of DSP boards for flooring provides high mechanical strength, as well as high thermal, hydro and sound insulation. The thickness of the material is selected based on effective loads and the distance between the lags, however, the use of CBPB boards with a thickness of less than 14 mm is not recommended.
• Application for facade at home allows not only to significantly reduce the time required for exterior finishing work, but also provides high-quality waterproofing of the main walls. Another advantage is that when using DSP, the characteristics of the material allow you to create various types of ventilated facades. As for the sheet thickness, for outdoor use it can vary from 12 to 14 mm.

DSP board: sizes and prices

Regardless of the brand, TsSP-1 or TsSP-2 (GOST 26816-2016), the sheet size can be:

• Thickness: 8-40 mm, in 2 mm increments;
• Length: 2700/3200/3600 mm;
• Width: 1200/1250 mm;

Depending on the thickness and overall dimensions, the weight of the sheet can vary significantly:

Overall size, mm	Weight, kg

The table shows that thick CBPB sheets have a significant mass, therefore, when working with them, it is advisable to use various lifting devices.

Methods of fastening DSP panels

Depending on the thickness of the DSP sheet and the type of work performed, the fastening can be:

• With open seam on screws;
• With open seam on nails;
• With closed seam on screws;
• With closed seam on nails;
• Using aluminum profile;
• Using a decorative strip.

The last two methods are most often used for decorative processing of facades.

Types of DSP: characteristics and their application

Depending on the structure of the wood filler, features and, a number of modifications have been developed based on DSP:

Fibrolite . Thin long shavings are used as a connecting element coniferous species. Mechanical properties filler helps to increase fiberization rates, which significantly increases the strength and elasticity of the material. The surface hardness of the semi-finished product is slightly less than that of CBPB. As a rule, fiberboard serves as good sound insulation.

A rbo lit . Wood processing industry waste, dry reeds and even cereal straw are used as filler. Despite the fact that the manufacturing technology remains unchanged, the strength is noticeably lower than that of CBPB. The main area of ​​application of the material is covering the load-bearing frames of internal partitions, heat and sound insulation.

Xylolite . Sorel cement provides high resistance to moisture and water. Thanks to this, the material has become widespread in façade cladding. Laying rough floors and installing roofing coverings.

How to prime DSP

Before proceeding with the final finishing of the surface of CBPB, it must be treated with a primer, preferably of deep penetration. For interior work, you can use the time-tested primer Ceresit ST 17, but its cost is quite high. There are other deep penetration acrylic compositions that are not much inferior to CT 17 in quality, and their cost is noticeably lower.

You can make a primer yourself by carefully dissolving 1 kg of PVA glue in 10 liters of water. This mixture is significantly inferior to deep penetration primers, but still better than nothing.

To treat façade cladding made of DSP, the use of a special primer is mandatory, otherwise the painting will end in disaster very soon. As a primer, you can use a 10% solution of acrylic facade paint.

How to paint a DSP board

To give the DSP boards an attractive appearance, the most in a simple way is coloring. After appropriate preparation of the surface, apply two layers of paint using or. Most often, in order to paint DSP, they use:

Acrylic paints . This paint has good adhesion and is highly wear-resistant. If financial capabilities allow, it is better to use paints that contain a solvent, but also water-soluble facade paints acrylic paints, at correct application, will last from 3 to 5 years.

Latex paint . This coating is resistant to alkaline and weak acid solutions, is easy to clean and mechanical cleaning with detergents. Besides. Painting works You can do it yourself, which will save you a significant amount.

Silicate paint . The use of this type of coating has high adhesion, their vapor permeability ensures optimal conditions for air circulation, which prevents the appearance of mold and other fungi. The coating is not afraid of atmospheric influences and detergents, and the service life will satisfy even the highest requirements.

Before you start painting DSP, it is necessary to take into account that the use alkyd paints undesirable, since direct contact with alkalis may cause cracking and peeling of the coating.

Advantages and disadvantages of using CBPB

Like any material, DSP, despite its undeniable advantages, also has some disadvantages; let’s take a closer look at the pros and cons of DSP panels, the characteristics of which were given above. The advantages of the material include the following properties:

• High strength;
• DSP sheets, even with a small thickness, provide a high degree of sound insulation;
• Cement particle board does not burn even at very high temperatures;
• Even without additional processing, has antiseptic characteristics;
• Vapor permeability;
• Water resistance.

The disadvantages of the material are less significant:

• Large specific gravity of the slab, making installation work difficult;
• Insufficient strength under bending loads;
• Difficulty in cutting and increased and large amounts of dust when cutting with power tools;

In order to draw final conclusions, it will be useful to study reviews on the Internet; here are some of them.

Cement particle board: consumer reviews

Positive reviews confirm the above advantages of the material:

1. I decided to use DSP boards for the flooring. I laid a 26mm thick slab on a crushed stone bed. After that, I laid down waterproofing and mineral wool, and attached the joists. The subfloor was laid with 16 mm slabs, with regular linoleum on top. I am very pleased with the result, dry and warm. Nikolay, Stavropol region.
2. Family circumstances forced us to install an interior partition. The drywall seemed not strong enough, so I decided to use 8 mm DSP. Installation on wooden frame 50x50 mm did not take much time, and cutting was not very tiring. All that's left is to putty and wallpaper. The design turned out to be durable and reliable, I’m very pleased good material. Andrey. Kharkiv.

In negative reviews, the most complaints are about the heavy weight of the material and other difficulties during the installation process:

I have been involved in construction and finishing for 15 years. The last object can be considered a year or two! The fact is that the customer decided to use 16 mm DSP instead of plasterboard for internal partitions, and decided to cover the facade with it. We didn’t have any lift; we fixed it manually. Perhaps the material will justify itself, but it is very difficult to install. Victor. Ryazan.

As soon as I started cutting the DSP for the partition I immediately realized what I had done terrible mistake. Cut with a grinder diamond blade, there was no dust except in the next block! There is no longer any desire to cut DSP panels indoors. Alexei. Novosibirsk

In the case of facade cladding, there are practically no negative reviews:

The outside of the house is covered with DSP panels and painted, with a layer of polyethylene and mineral wool laid underneath. The house has been dry and warm for two years, there are no fly agarics, cracks or mold outside, we are very happy. Karina. Volgograd region.

Cladding the garage with DSP slabs did not cause me any difficulties. I used the 12 mm version and a wooden frame made of pine beams 50x50 mm. I watched horror stories about possible cracks due to thermal expansion and decided to leave decorative seams, well, it seems like that’s what was intended. I painted it with façade paint and for the third year now there have been no problems. Yuri. Smolensk region.

Having carefully analyzed the performance properties of DSP panels and consumer reviews, the following conclusions can be drawn:

• The material is quite budget-friendly;
• The price/quality ratio is acceptable;
• Simple installation technology allows for independent installation;
• Inconveniences during installation are due to the high specific gravity of the material;
• When cutting there is high dust content.

In general, DSP boards are in demand for both interior, exterior and landscape work.

In private housing construction, the choice between wood and stone is the most fundamental question before starting work. Both materials have their pros and cons. What happens if you combine beneficial features cement and wood in one material? The result will be CSP (cement particle board). This is what we will talk about in this article: we will try to understand what types there are and how easier it is to choose a DSP.

Features of cement bonded particle boards

The material is a symbiosis of wood and cement. Unlike other particle boards, it does not contain any synthetic resins; the main binding component is cement. Cement with strength grade M500 is used. Wood chips are sorted into fractions and stabilized. Also, chemicals are added to the product (aluminum sulfate, sodium silicate), which prevent the process of rotting of wood ingredients and eliminate the negative impact of the particle component on cement. All ingredients are mixed with the addition of water in an industrial mixer. The products are then formed and pressed dry using compressed air.

Compared to other wood-based boards, DSP has a number of features.

• Environmental friendliness- the material does not contain any synthetic resins that are found in chipboard, OSB or fiberboard. Therefore, those who are concerned about the formaldehyde content in composite products should pay attention to DSP.
• High stability- cement particle boards have high wear resistance and moisture resistance. They absorb moisture less than other wood-composite products, while maintaining their overall shape - they do not swell.
• Strength allows the use of CBPB as a structural material; cement boards are superior to other composite analogues, such as fiberboard and OSB (oriented strand board).

Frame house with DSP walls

Oriented Strand Board - composite material, consisting of large pieces of wood chips, which are arranged in layers and pressed into monolithic slabs. The binding element is formaldehyde resins. Products are sensitive to moisture and are easily deformed under its influence. can be an excellent alternative to OSB in the construction of frame houses.

• Fire safety- another plus of the DSP is that the boards do not contain resins or glue, which, when exposed to fire, will burn and generate a large amount of smoke. Portland cement, which is most often used for production, does not support the combustion process. According to the class, the material belongs to low-flammable substances (G1).
• Biological resistance- cement is not a favorable environment for the proliferation of fungi and insects, therefore this scourge, characteristic of some types of wooden houses, bypasses houses made of fiberboard.
• Good adhesion to finishing materials- cement particle board lends itself well to finishing and plastering. The sheets have good adhesion to the applied finish.

Speaking about the advantages, one cannot fail to mention the disadvantages of cement slabs. Often the choice is in favor of frame construction They do this because DSP is more expensive. Another significant disadvantage is the heavy weight. It is difficult to work alone when producing finishing work with cement-bonded particle board products. Also, significant weight makes it difficult to transport products. Cutting causes certain difficulties, since during this process a large amount of cement dust is released.

DSP cutting is carried out with a diamond disc

Physical and technical characteristics

According to state standards is divided into two brands depending on the quality of the products. At the same time, the main physical and technical parameters do not differ. According to GOST, the density of both brands should be 1100 - 1400 kg/m3. According to the standard, several standard sizes are allowed. The lengths are 3200 and 3600 mm, the widths are 1200 and 1250 mm. Production of other sizes is allowed by agreement with the end user.

Another important parameter is moisture resistance. It consists of basic humidity and moisture absorption, i.e. the amount of water relative to the total volume that the product can absorb. The basic humidity for both brands of product should be from 6 to 12%. According to standards, moisture absorption should be no more than 16%, while the change in thickness (swelling) cannot exceed 1.5%, while for some types of wood-based panels this figure can exceed 20%.

Now we need to move from general points to differences.

• TsSP-1- have a smoother surface; for this brand, deviations from the plane of the slab are allowed by only 0.8 mm, oil stains and chipped edges are not allowed. There may be no more than one dent up to 1 mm deep on the surface. The permissible bending strength depends on the thickness of the sheet and cannot be less than 12 MPa for 12 mm thick CBPB; for sheets over 19 mm, the permissible bending strength is 9 MPa.
• TsSP-2 designed for lower bending strength. For a 12 mm slab this figure should be at least 9 MPa, for a slab over 19 mm - 7 MPa. This brand also has more defects. For example, there may be oil and rust stains on the surface, and there may be dents more than 2 mm deep on the surface (the maximum allowable quantity is 3 pieces).

Some materials are often called varieties, although they are not such. It’s just that these products are very similar in production method, structure and properties.

Fibrolite- cement-fiber material, long wood fiber is used in production to form boards. Fiberboard has low thermal conductivity, fire resistance and is used for insulation. DSP significantly exceeds it in density and strength.

Arbolit It is made from a mixture of shavings, sawdust and wood chips with cement. The material is used not only as thermal insulation, but also for the construction of walls and partitions. Arbolite is produced in the form of blocks, slabs or floors.

Walls made of arbolite slabs retain heat well due to their low thermal conductivity

Xylolite It is made on the basis of shavings and lightweight concrete. The main scope of application is self-leveling seamless floors and partitions.

Selection based on application

It is used as a heat-insulating, finishing and structural material, so the scope of application is quite wide.

• Construction frame house - cement slabs are used for the construction of frame houses. In this role, they replace cheaper, but less moisture-resistant, oriented strand boards. DSPs are used to impart rigidity to the frame and create the structural strength of the house. The distance between the posts should be no more than 60 cm. The slabs allow you to form a “pie” of a frame house, which consists of several layers of sheathing, posts, thermal insulation, vapor barrier and wind protection. The outside of the house is covered with siding or plastered. For walls, sheets with a thickness of 12 - 18 mm are usually used.

Sheathing the house frame with cement-bonded particle boards

• Rough wall finishing- V in this case products made from cement and shavings are used to level the surface of the wall covering. The material is well suited for subsequent painting or wallpapering. In this case, it is better to choose first-class products, with finishing methods when outer side sheets will be covered with other material, products of the TsSP-2 brand are used.

Wall finished with DSP sheets

• Roofing - cement bonded products are used to create a base for soft roof. The sheets are laid on the sheathing or rafter system. In this case, the thickness of the sheets should be selected based on the pitch of the rafters. Most often, sheets with a thickness of 16 to 24 mm are used.
• Subfloors can also be made using cement bonded particle boards, they provide heat and sound insulation. Installation is carried out on logs or concrete screed. This coating most often serves to level the surface before laying the finished floor. The appearance of the material does not play a special role, since it will be hidden under the laminate or parquet, so you can use the TsSP-2 brand. In this case, it is important to choose the right sheet thickness, which when installed directly on concrete can be 18 - 20 mm. When installing the log system, it is affected by the distance between the bars. For gaps of 60 cm, it is optimal to use slabs of 20 - 26 mm.

Laying a subfloor on a joist system

has high moisture resistance and can be located in the ground long time, this property is used to create temporary floors directly on the ground. Such coverings are used for placing building materials and for temporary buildings.

• Internal partitions allow to differentiate inner space in the house into rooms. Due to its good moisture resistance, the material can be used to divide a combined bathroom into two rooms (bathroom and toilet). If painting is planned as a finish, then it is better to choose a grade of material with the least amount of external defects (TsSP-1).

The partition has a complex structure, the frame is made of galvanized profile, mineral wool is used as insulation and heat insulator. DSP acts as an element that gives the structure the necessary strength

• Permanent formwork- for pouring foundations or other architectural forms CSP can be used with concrete, they have good wear resistance and tolerate high humidity, while the products are not deformed, so they are not removed when the concrete hardens and perform a form-building function for various structural elements. For example, cement bonded particle boards are suitable for creating columns. Compared to the use of other wood boards (plywood, OSB), the material practically does not change its geometry and does not swell.

Formwork made of cement bonded particle boards

• Window sills can also be made from small cement particle boards. For this, you can use slabs more than 10 cm thick.
• Door trim- due to its moisture-resistant properties, the material can be used for finishing external doors. For example, cement-bonded particle board products are used to improve the sound and heat insulation of balcony doors. In addition, the material can significantly increase the fire-resistant properties of the structure.
• Arrangement of a summer cottage- DSP is used for the construction of fences and fences. The material does not deform from contact with the ground, so it can be used to create beds. Cement slabs are also suitable for the construction of utility rooms for storing tools and gardening equipment.

Beds made of cement bonded particle boards

Conclusion

Represents good alternative familiar wood boards based on wood and synthetic resins. The material is highly moisture resistant and is harmless to humans. Cement particle boards are equally suitable for interior and exterior decoration, as well as for auxiliary work.

Building yard

DSP: classification, selection and scope of application

Sheet building materials are used in many types of construction work, which are usually called “dry”. One of these materials is a DSP board. This durable material, which can be used in the construction of frame houses and outbuildings, for interior and exterior finishing work.

What is a CBPB board?

Cement particle board (CPB) is a sheet building material that is made from high-quality cement (Portland cement) mixed with thin long wood chips (according to GOST 26816, chip thickness is 0.2-0.3 mm, length from 10 mm to 30 mm) . Aluminum sulfate and liquid glass. When kneading, water is added (about 8% of the total mass). The resulting substance is molded into slabs and pressed.

DSP board - sheet building material for interior and exterior work

Some manufacturers make CBPB boards from several layers. They separately mix compositions with smaller and larger chips. The mixture with coarse wood chips is used for inner layers, gives greater strength. Outer layers are formed from a composition with smaller chips, which makes its surface smoother. The folded “pie” enters the press, resulting in the formation of monolithic slab DSP with improved characteristics.

It is also worth saying that there are polished and unpolished CBPB boards. Sanded ones can be used for interior or exterior finishing in those works that can be immediately followed by finishing work. There are also finishing DSP boards, on one of the surfaces of which a finishing layer is formed in the form of stone or brickwork, decorative plaster etc.

Application area

DSPs are mainly used in dry installation technologies. They are good for the construction of frame houses, since they do not emit harmful substances, have high strength, are low flammable, emit a small amount of smoke during a fire, and do not spread fire. Having high mechanical strength, they increase the rigidity of frame structures. All this makes frame houses sheathed with DSP safer and more reliable.

Objects for using DSP

DSP sheets can be used in the construction of the following objects:

• Frame residential buildings up to 3 floors inclusive.
• Industrial, office buildings.
• Hotel complexes.
• Kindergartens, schools.
• Medical institutions.
• Sport halls.
• Warehouses, hangars.

Disadvantage: the CBPB slab has a significant mass (several times heavier), which increases the requirements for the foundation. The heavy weight also becomes a problem when climbing to the second floor - you need assistants and or lifting equipment (at least a winch). Another disadvantage of DSP is its low resistance to bending loads. This limits their scope of application - they are placed on the base, in places with low bending load, or must be mounted vertically.

Resistance to weathering and high humidity, fungi and bacterial infections allows the use of cement-bonded particle boards in the construction of outbuildings: sheds, garages, cellars.

For finishing external and internal works

Another area of ​​application for cement particle boards is leveling floors and walls. Compared to other materials, the DSP board has better sound insulation characteristics, is not susceptible to fungi, and tolerates climatic influences well. Therefore, they are often used to create ventilated facades.

For interior finishing, DSP boards can be used for the following work:

• Soundproof and fire-resistant partitions and walls.
• Internal cladding of premises for any purpose (residential and non-residential, including high humidity).
• Window sills.
• Rough floor.
• Ceilings.

The positive point is that there are cement bonded particle boards, sanded and unsanded. Polished have absolutely smooth surface. When using them, you can only seal the seams and then paint, glue wallpaper, or use other finishing methods.

Characteristics and properties

DSP board - relatively new material, not yet very widely used in private construction. This is because not everyone understands how he behaves in the long term. To understand whether it is good or not for your purposes, you need to know about all the properties.

Density and mass

Density of CBPB is 1100-1400 kg/m³. High density gives frame structures increased level of rigidity. If this material is used for interior finishing work, such walls have sufficient load-bearing capacity to support shelves, cabinets and other fairly heavy objects.

The material is quite dense and heavy. One sheet with a height of 2700 mm - depending on the thickness - weighs from 37 kg to 164 kg. This makes it inconvenient to cover the second floor and above. This can be considered a disadvantage.

Thermal and humidity expansion

Another important characteristic for construction is linear expansion with changes in humidity and temperature. For a CBPB board it is present, but it is small. When placing the plates one next to the other, it is recommended to leave a gap of 2-3 mm between them. When installing the second row (in height), the recommended gap is 8-10 mm.

• Normal humidity for sale is 9% (±3%).
• Low water absorption allows this type of material to be used for exterior finishing and for covering walls in rooms with high humidity. When in water for 24 hours, the limit for thickness increase is no more than 1.5%. That is, when wet they hardly change size.

What else is worth knowing: when immersed in water, the dimensions change slightly - 2% in thickness and 3% in length. If the material is made according to technology, then even after a long stay outdoors in the open air, it does not change for years.

Strength indicators and installation features

Cement particle boards do not tolerate bending deformations well, but have very high strength under longitudinal loads. Therefore, they are used for installation on vertical surfaces. Manufacturers do not recommend laying them on joists, but when laid on a subfloor or rough screed, the material behaves stably. Since the DSP board is not afraid of water, it can be laid on the floor in rooms with high humidity.

Elastic modulus:

• in compression and bending 2500 MPa;
• tensile strength - 3000 MPa;
• in shear - 1200 MPa.

If the CBPB is mounted on a frame, sheathing is required in increments of at least 60 cm. During installation, fasteners are installed in increments of 20 cm. We install self-tapping screws not only along the perimeter, but also along the intermediate rivers of the sheathing. In this case, tiles can be glued onto the DSP board (a primer, after it dries - not an adhesive composition, the tiles can be laid).

Fire hazard and frost resistance

The DSP board is a hard-to-burn material; fire does not spread across the surface; toxic or harmful gases are not released during combustion. Fire resistance limit (ability to contain fire) - 50 min. This means that the material will collapse after 50 minutes in the fire.

High frost resistance - the decrease in strength after 50 freezing/thawing cycles is no more than 10%, which allows the material to be used for building houses even in the Far North. The service life of this material outdoors is 50 years.

It is these properties that make DSP the more preferable material in. The structure turns out to be more reliable in terms of fire safety.

Soundproofing properties

The DSP board has good soundproofing characteristics and can be used for cladding external or internal walls:

• decrease in level air noise for a slab with a thickness of 10 mm - about 30 dB, for 12 mm - 31 dB;
• reduction in the level of impact noise when slabs are laid on reinforced concrete floor- with a thickness of 20 mm it is 16 dB, with a thickness of 24 mm - 17 dB;

When using additional intermediate layers, impact noise becomes quieter by another 9-10 dB. That is, frame walls covered with DSP boards block enough sound to keep the house quiet.

The best combination is a combination of cement bonded particle board and mineral wool. Mineral wool also serves as insulation, since due to the homogeneity of the DSP it has a small thermal resistance(not a thermal insulation material).

Performance characteristics

DSP boards are characterized by high vapor permeability - 0.03 - 0.23 mg/(m·h·Pa). This is about the same level as natural wood. At correct selection wall cladding, the humidity in the rooms will be regulated naturally.

In addition, the DSP board has high resistance to rotting. This happens due to the natural process of formation of calcium hydroxide, which is formed during the transformation of cement into concrete and alkalizes the material so that it becomes unfavorable environment for the habitat of fungi, insects and putrefactive bacteria.

Dimensions and weight

When purchasing materials for construction and finishing work, such characteristics as the size and weight of the material are important. DSP sheets are available in two sizes: with a width of 1250 mm, the length can be 2700 or 3200 mm. In this case, the thickness of the DSP boards can be 8, 10, 12, 16, 20, 24, 36 mm.

It is clear that the thicker the slab, the greater its mass. Approximate mass values ​​are given in the table (in different manufacturers there may be deviations both in the direction of increasing and decreasing mass).

Weight of cement bonded particle boards depending on size and thickness

You may also need the following parameters:

• area of ​​one sheet:
  • 1250*2700 - 3.375 m²;
  • 1250*3200 - 4.0 m²;
• the weight of a cubic meter of CBPB is 1300-1400 kg.

The DSP sheet is a homogeneous monolithic material without air inclusions, which explains the high thermal conductivity of the material. This must be taken into account when developing an insulation cake. The material adheres well to wood, polymers and metal, so it is convenient for construction work.

Mounting methods

The DSP board can be fastened with nails or self-tapping screws. When mounting on a frame, the slabs must be mounted strictly vertical.

Scope of application of cement bonded particle boards in private construction

To fasten cement bonded particle boards you can use:

• Galvanized screw nails with a diameter of 2.5 mm. The length is selected depending on the thickness of the sheet and the entire cake. The pinched part of the nail must be at least double thickness slabs, but not less than 10 nail diameters.
• Screws and self-tapping screws with pre-drilled holes for the heads. The length is chosen according to the same principle.

When installing CBPB slabs, it is necessary to strictly monitor the quantity and order of installation of fasteners: the material has a large mass, so fasteners must be installed at least as recommended. The distance between nails or screws depends on the thickness of the slab and is indicated in the table.

Each sheet of cement bonded particle board is fixed around the perimeter, departing a certain distance from the edge of the sheet. The frequency of installation along the long and short sides of the sheet is the same, but depends on the thickness of the material. In addition, there is also an intermediate mount - in the middle of the height. Here, the frequency of installing screws or nails is half as often as around the perimeter.

Processing and finishing methods

Despite the fact that cement particle board is much stronger, it is processed with the same tools: a router, a saw, a jigsaw. The difference is that you need to use stronger files.

For drilling, it is recommended to use a drill with a hard tip. Can be used either manually or electric drill. It is not recommended to sand this material, since this work removes the top layer, which increases water absorption. But when docking, sometimes it becomes necessary to equalize the height. In this case you can use grinding machines any type. Recommended grain sandpaper — №16-25.

Please note that in order for the seams between the slabs not to crack, the seam must be at least 4 mm for the internal section, and at least 8 mm for the external section. The distance is large and can be closed with special slats (usually used for exterior decoration) or with elastic tape or sealant.

As a final finish, the DSP board can be painted or covered with plaster. For exterior finishing, the joints between the slabs are often simply painted over, leaving them unfinished. Another option is to use an aluminum profile trim that emphasizes the seams. You can also cover the seam with a strip.

For interior finishing, the seam is filled with sealant, which remains elastic after drying. After this you can plaster. The second option is to lay a special elastic cord, on top of which elastic plaster is again applied.

Cement particle board (CPB) is a material that is actively used in construction and repair work. Such plates are in demand in a huge number of areas. But even these fundamental structures are presented in a wide variety on the construction market. Before choosing a specific product, you need to familiarize yourself in advance with the features of these structures and the areas of their use.

Production Features

Cement particle board is manufactured using special technologies. The process of creating a DSP includes the following steps:

• The solution is based on water, which is poured into a special mixing container. Aluminum, salts and liquid glass are also added to the container;
• for mineralization to take place, shavings elements are added to the mixture;
• on next stage cement is added;
• to obtain a DSP block, the solution is poured into a special mold;

• a certain thickness is given to the substance using a press;
• after pressing the product passes heat treatment, the implementation of which takes into account the characteristics of the components of raw materials;
• In order for the substance to harden, it is placed in special chambers. There, at a temperature of 80 C, the components are fixed;
• After hardening, the canvas is cut into sheets. Their sizes are determined by GOST.

Products are manufactured only in special factories, where strict control over the implementation of each stage is carried out. It is impossible to independently produce a high-quality DSP panel.

Characteristics

Cement-bonded products have a number of fixed technical characteristics that explain many of their properties:

• a quarter of the composition is made of wood chips, a little more than 8% is water, the main component is Portland cement and additional impurities account for 2 and a half percent;
• material thickness varies from 8 to 12 mm;
• The width of the slab is 120 or 125 cm;
• length – from 2.6 to 3.2 m. To order, you can choose a model up to 3.6 m long;
• weight of one square meter DSP having a thickness of 8 mm reaches 10 kg.

The material has high density, which reaches 1300 kg/m3. During the process of moisture absorption, the density can increase by 2 percent. The limit of water absorption capacity usually does not exceed 16%.

The roughness of a CBPB board is the relief of each sheet. It depends on the grinding characteristics. Unsanded boards have a reading of 320 microns, while material that has been sanded has a reading of 80 microns.

The sheets have a fire resistance class of G1, which means that the material has low flammability. The thermal conductivity index is 0.26 W.

All of the above characteristics allow you to choose required number and parameters of the building material.

There are also different types of materials for slabs and cast products made from CBPB:

• Xylolite– high-strength material with good thermal insulation. Such slabs are often used for flooring. Products are presented in a wide range of colors.
• Fibrolite is a raw material consisting of long fibers. He has high thermal insulation properties and soft texture. Biological factors do not have a strong impact on this type of DSP.
• Fine-chip materials include wood concrete, which is used in various fields.

Advantages and disadvantages

Like any building material, DSP has a number of advantages and disadvantages. The advantages of such plates include:

• The material is very resistant to moisture and temperature changes. The slabs can withstand up to 50 frost cycles. This characteristic significantly affects the service life of the slabs.
• The raw materials used to create such partitions are absolutely safe for human health. DSP does not release harmful toxins and does not cause allergic reactions.
• Cement bonded particle board is perfect for various transformations. With it you can use any finishing methods and change the surface of the product at your own request.
• A wide range of. In modern construction stores you can find a wide variety of products.
• The affordable price is an important advantage. Since the material is often used when building a house from scratch, the purchase large number material will not negatively affect your budget.

• Cement-bonded products are easy to use. On such a surface it is convenient to carry out various renovation work using a drill, hammer drill or knife.
• The fixed size of the products significantly facilitates the installation process.
• The material is resistant to rotting processes.
• When a cement-bonded particle board is used to screed floors, it contributes to significant cost savings compared, for example, with self-leveling compounds or a cement-sand leveling option.

TO negative properties DSP can be classified as:

• Products can reach a large mass, which significantly complicates their use in high rooms. The high weight is due to the high density of the material.
• The material is not plastic. If you try to bend such a slab, you can break it. The risk of breakdown during construction work explains the need to purchase material in reserve.

Based on the presented data, it is clear that DSP has significantly more advantages than disadvantages. The disadvantages of such products are easily compensated by their advantages.

Scope of application

Cement particle boards are used in various construction and finishing fields. The most common applications are:

• External . It implies the suitability of slabs for finishing the façade of residential premises and the use of slabs as a basis for fencing. Work on the implementation of permanent formwork is also possible. DSP sheets can be used both in private and industrial applications. These slabs are used to construct protective structures for beds in private homes, and parts for industrial enterprises.

• Cement particle board is indispensable in the construction of a frame house. In this case, it acts as an excellent insulation. The products are used to create heated floors. They are also often used for walls, subsequently creating interesting decor on the slabs.
• The material's resistance to moisture allows it to be used as ceiling covering in saunas and other types of premises where the humidity level is high.

• Often such sheets are used to create partitions in rooms. In order for the slabs to serve longer as a separator, they are coated with a special paint that performs a protective function.
• The most the best varieties Cement particle boards are used to create furniture.
• The material is used to create window sills. It becomes a more affordable alternative to wooden structures, and at the same time lasts no less long.
• It is permissible to make a special base for roofing in private houses from dense slabs.

• A very common area of ​​application for slabs is restoration. The material is often used to give old buildings a better look. In addition, due to their relatively low price, the products are quite suitable for large-scale work.
• By using thin slabs Often finishing of such attributes of private houses as a fireplace and chimney is carried out.
• Cement particle boards are sometimes used as an alternative to cement when screeding floors.

DSPs are suitable for various types of work. The following processing options for cement-bonded particle board products can be carried out:

• cutting to required sizes;
• creating holes in slabs using a drill;
• milling work;
• increasing strength at joints using end grinding;
• applying a primer mixture, acrylic or silicone paints;
• cladding with ceramic products;
• pasting with glass wallpaper.

These capabilities characterize DSP material as an excellent base for any coating and as a source for realizing creative ideas.

Manufacturers

There are a number of manufacturers of chipboard products that are very popular in the construction market and have earned positive customer reviews.

Leningrad company "TSSP-Svir" provides light gray products with a calibrated surface. Also among the company's assortment there are polished models. Production is based on European standards and high-quality equipment from Germany.

Bashkir enterprise "ZSK" also distinguished by the production of slabs High Quality in accordance with GOST. Main feature products is their increased resistance to temperature fluctuations and the influence of weather conditions.

Kostroma company "MIT" characterized by special geometric characteristics of the product and strict adherence to all quality standards.

Tambov company "Tamak" produces high quality slabs. The company approaches its business very carefully, so it is difficult to find even the slightest defect among their products.

Omsk company "Stropan" is engaged in the production of elastic cement bonded particle boards of various thicknesses. The company is also distinguished by the creation of sheets with increased sound and thermal insulation.

Knowing the list of leading companies, you can easily choose slabs that you will not be disappointed with later.

Depending on how exactly you decide to use DSP for your home, you should listen to various recommendations for correct installation these slabs.

The most common option is to insulate walls or floors using cement bonded particle boards. To carry out this procedure, it is necessary to prepare the surface of the walls in advance by providing it with metal and wood lathing. It is necessary to have special cells having a fixed size of 500*500 mm.

During installation, leave 1 centimeter space between the plates. It is covered with a special cover, which can be used as finished goods from the same material or create them yourself from residual raw materials.

To secure the canvas, you must use nails, screws and self-tapping screws. You can attach alternative ways– using mastic or a special adhesive solution.

For insulation frame structure slabs must be installed from the outside and inner sides walls at the same time. If you want to insulate a utility room, then it is permissible to leave a small space between the base of the wall and the DSP sheet.

In private homes, many people install cement-bonded particle boards on wooden floors to make them warmer. To correctly carry out this process, you must follow a special algorithm:

• To avoid creaking floors in the future, the base is adjusted and secured with self-tapping screws. When adjusting the base coating, it is imperative to remove rotten boards and replace them with new ones. If there are cracks or cracks of an insignificant nature in the surface, they must be treated with putty.
• Rooms are measured taking into account the location of the long side of the canvases across the boards.
• It is necessary to design on paper a diagram for laying CBPB.
• Using a grinder, you need to cut the sheets to the required parameters, if necessary.
• The slabs are installed in the direction from corner to corner. In this case, it is best to fix the products using zinc screws.
• The seams between laid sheets should be primed. Only after completion of all stages can the external finishing of the floor covering be carried out.

A special process is the use of DSP for floor screed. To correctly carry out the dry screed procedure, it is necessary to lay the sheets on a special filler with granules and metal profiles made of plasterboard or wooden blocks. Self-tapping screws for fastening cement-bonded particle boards must be suitable for the cross-section of the beams and the material from which they are constructed. This leveling method is used only if the difference in level differences is more than 6 cm; raising the level with the help of canvases is permissible on average to a height of 7 to 10 cm.

Modern construction widely uses cement-bonded particle boards (CPB) for exterior and interior decoration. We understand what the material is and how it is used.

Modern construction is impossible without the use of modern building and finishing materials. In the huge variety of composites used for finishing, a special place belongs to slabs made of cement and wood chips. This wood-based material is superior to other particle board composites in many respects: OSB, chipboard and others. Let's figure out what the specifics of the DSP are and for solving what problems it can be used.

What is a CBPB board?

By its origin, CBPB belongs to composites. To prepare it, Portland cement is used, which is mixed with wood chips with special characteristics. Its shape in the form of long thin needles (with a length of 1-3 cm, the thickness of the chips is only 0.2-0.3 mm) provides excellent performance properties.

In addition to cement and wood chips, the mixture for forming CBPB boards includes:

• Liquid glass.
• Aluminum sulfate.
• Fuel oil or technical oils in small quantities.
• Water (about 8 parts out of 100).

Additives make the slab resistant to the development of mold and bacteria. In addition, they reduce the ability of cement to destroy wood, increase the plasticity of the mixture, and give it flame resistance.

High-quality DSPs are a “sandwich” of 3 or more layers. The outer layers are made of a mixture based on small wood chips. They are smoother and easier to finish. The deeper layers are based on coarser, larger chips, which gives them additional strength.

The slab coating can be sanded to make it easier finishing work by finishing. There are also varieties with a relief applied to the outer layer that imitates brickwork or the texture of natural stone.

In addition to decorative properties, DSPs have a number of parameters that determine their applicability in a particular area. Let's look at them in more detail. To learn how to properly decorate walls plastic panels In this article.

Density

One of the most important characteristics. The ability of the slab to withstand operational loads, as well as its weight, depends on the density. To characterize density, they usually indicate how much 1 cubic meter weighs. m of material. For DSP this parameter ranges from 1100 to 1400 kg.

Weight

The mass of the CBPB is directly related to its density. It is quite large, and exceeds the similar characteristics of other composites based on wood chips by 2 times or more. A slab with a length of 2.7 m and a width of 1.25 can weigh from 36.5 kg to 164 kg, depending on the thickness. Such a mass complicates the installation of slabs and other operations with them (transportation, lifting high floors etc). However, it is worth emphasizing that among all materials based on Portland cement, CBPB is one of the lightest.

The weight of a cement bonded particle board is significantly affected by its humidity. The standard allows fluctuations in this parameter within 3% of the base (9%), so that the same slab different conditions may weigh differently.

Strength

The plate has excellent compression resistance and longitudinal deformations. Its strength characteristics make it possible to use DSP sheets to strengthen walls. However, this material has much less ability to withstand bending and especially stretching.

Dimensions

DSP is a relatively new material. Therefore, the number of sizes in which it is produced is not too large. The standard width of the slabs is 1 m 25 cm. The length varies in the range from 2 m 70 cm to 3 m 20 cm. The thickness is more varied: there are 7 sizes, of which the most widely used are 1 cm, 1.6 cm and 2 cm. The maximum is The thickness reaches 3 cm 6 mm.

Where is cement bonded particle board used?

Slabs based on cement and shavings are widely used in “dry” construction. They are most widely used for the construction of buildings according to frame diagram. This is facilitated by the ability of the slab to significantly increase the strength of the frame (with proper installation).

Another reason for the high popularity of CBPB is the high safety indicators of the material. The composite does not emit harmful volatile substances either during normal operation or during a fire. It does not support combustion and does not allow flames to spread across its surface.

The material is widely used in low-rise (up to 3 inclusive) construction. It is perfect not only for the construction of cottages and private houses, but also for public buildings: offices, entertainment centers, hotels, industrial workshops. The high safety and environmental friendliness of the cement-bonded particle composite allows it to be used in the construction of children's institutions, schools, hospitals, and sanatoriums.

Another area of ​​application for cement particle boards is the construction of street buildings in household plots. Outbuildings, cabins, sheds, cellars, outdoor toilets, built from DSP, serve for many years due to the high resistance of the material to atmospheric moisture, temperature fluctuations, growth of bacteria and mold fungi.

The low resistance of the material to bending deformation somewhat limits its scope of application. The DSP is either laid on the floor (on a solid base) or hung on the frame in a strictly vertical position. This material cannot be placed at an angle or used to design arched structures!

In interior decoration, slabs based on cement and wood chips are also widely used. They make them internal partitions, subfloors, window sills. Also, using DSP, the surfaces of walls and ceilings are leveled.

Installation features

The slab can be secured to the frame using self-tapping screws or nails. The selection of fasteners is carried out as follows:

• For self-tapping screws, take a thickness of 2.5 mm. The heavier the sheets, the thicker the screws are selected. The length is determined by the thickness of the “pie” with which the frame is sheathed. Before screwing in the fasteners, use a drill to drill holes for the screws.
• For nails, selection of length and thickness is done according to the same principle. The wood must accommodate at least 10 nail diameters to ensure a secure fit.

The DSP board weighs a lot, so in order to securely fix it to the frame, it is extremely important not to skimp on fasteners. The table shows the recommended number of fasteners for various standard sizes, as well as the maximum permissible distance between them.

The sheet is fastened around the perimeter, with strict adherence to the vertical placement of the slab and the frequency of installation of fasteners. After the sheet is secured around the perimeter, it is also necessary to tighten it along the line that runs in the middle of the height of the slab (horizontally). On this line it is permissible to screw in screws half as often as along the perimeter.

Laying CBPB on the floor

If the slab is used to create a subfloor, the technology involves placing a joist system. Timber is used for the logs (its dimensions: width 5 cm, thickness 8 cm). The logs are placed on the base, having previously laid a layer of sound and waterproofing. The step between the logs is about 0.6 m.

A layer of insulation is placed between the joists. The thickness of the layer is selected so that after laying and covering waterproofing membrane the layer turned out to be a couple of centimeters deeper than the lag. This gap is necessary to organize ventilation.

A DSP board (usually 2 cm thick) is placed on the logs. The slab is attached to the joists with self-tapping screws, recessed countersunk heads flush with the floor surface. The seams are carefully sealed using sealant. The finished floor can now be laid on top of the slab.

Do-it-yourself installation of a DSP board. Step-by-step instruction

Before starting installation, you should draw up a project. It will allow you to understand how many sheets will need to be strengthened, where each sheet will have fasteners, and what pieces the purchased slab will have to be cut into. Before work, you need to carefully consider how the plate will be held in place until it is completely fixed. Since the cement-bonded particle composite is very heavy, it is worth considering the possibility of using lifting mechanisms.

When working with DSP, every pair of hands is more important than ever. Therefore, it is strictly not recommended to start work alone. It is better to work with at least one assistant.

The procedure is as follows:

• Focusing on the drawn up project, we cut the slab into pieces the right size. The cement-bonded particle composite is cut with the same tools as regular chipboard, but harder files are needed.
• On each piece we drill holes for self-tapping screws.
• We attach the piece to the frame, checking its plumbness using a level.
• We screw in the screws in the corners, then around the perimeter and in the middle.
• We fasten the pieces one by one until the sheathing is completed. Next, we seal the seams with sealant or close them with a special strip.

In the building, the joint width is at least 0.4 cm, outside - at least 0.8. Otherwise, the joints will begin to crack.

All that remains is to paint the slab or plaster it for a final finish.

Any business turns out better if you use practical experience. Such a wealth of valuable knowledge about the features of choosing and installing CBPB can be acquired through personal experience, but mistakes will lead to delays in construction and financial losses. Therefore, we suggest watching several useful video clips to get acquainted with the experience of professional builders:

The use of modern finishing materials makes it possible to perform construction works much faster, without spreading excess dirt and ultimately getting an excellent result. The use of DSP provides just such opportunities to the builder.

However, before starting work, you should familiarize yourself with all the features of this material. This will help you not expect the impossible from him and avoid annoying mistakes in installation. We hope that the tips contained in this article will help you in your work!

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