Wood-concrete blocks: price, size and main characteristics

One of the features of a modern approach to the low-rise building is the use of materials with simple installation technology and minimum heat transfer coefficient. Wood-concrete blocks: the price of which is available to all Russians, meet these requirements fully. Suffice it to say that the building material surpasses brick, cinder blocks and concrete at a rate of heat transfer, and the wood is only slightly inferior.

What is arbolit and its basic properties

First of all, consider the composition arbolita. It is based consists of dried wood chips. In doing so, the chips for arbolita imposed certain requirements. Its particles should have a needle shape and fit in these sizes:

• width 10 to 12 mm;

• thickness of 2 to 3 mm;
• length - not less than 15 and not more than 25 mm.

Chips mixed with cement binders and other additives which improve the quality of the final product - wood-concrete blocks. Immediately after preparation derevobetona (as professionals call the resulting mixture), it is poured into molds and compacted using the vibrating table. After 30-40 hours the next stage of production wood-concrete construction material, these blocks are removed from the molds and placed in a special area where they are gaining strength. It will take up to 30 days. And only if the building material can be used.

Useful advice! Arbolit creating with their hands in the form of blocks, place them in a wet state by the tape. The process of hydration at a temperature of 15 ° C of 10 days will give them the greatest possible strength.

This technology allows you to create different size wood-concrete blocks. They can be either wall or the barrier. As for the specific size of this type of building block, the modern industry adheres to the production of the following characteristics:

• height from 20 to 25 cm;
• width of 5 to 25 cm;
• length 60 cm.

In addition, also issued "final assembly" of the product. As the name suggests, it is clear that such wood-concrete blocks having the shape of parts, and the other halves of the "wrong" geometry, eliminate the need for trimming and trim conventional elements. Thanks to this technical solution, the customer can choose the most appropriate building material derevobetonny configuration.

Stop your attention to arbolita thermal conductivity. It is useful to know the people seeking to maximize savings on the construction of a country cottage. Wall of Housing of wood-concrete blocks thickness of 20 cm, on the heat transfer coefficient corresponds to a brick wall 1-meter thick. Therefore, in the coldest regions of our country on the insulation construction costs will be significantly lower compared with the use of brick.

Another significant advantage of blocks from sawdust and cement is their low weight. After all, they are 80-90% consists of the dried chips. For this reason, the bearing capacity of the foundation may be about the same as for the wooden structure.

Comparing characteristics of arbolita block with other building materials

In order to understand whether suitable for the construction of wood-concrete blocks, it is worth to make a comparative analysis of the properties of the most popular building materials.

Comparison of arbolita, timber, porous concrete and bricks:

material property	Brick	cellular concrete	Wooden beams	Arbolit
Degree of difficulty attaching to the wall home design	Special fasteners	Expensive special screw, designed to work with the fragile material	Perfectly fastened with screws, nails, dowels conventional	Excellent mounting screws, nails, dowels conventional
Period of construction and commissioning	Long and expensive process because it requires insulation and finish	Rapid erection of walls. Much time is spent on the outer insulation of the facade. This process is time-consuming and costly	Due to the shrinkage of the incident, after the construction will require finishing works	Rapid erection of walls, ext. insulation is not required to carry out the finish, you can immediately
The cost of foundation	Expensive, massive	Costly massive monolithic strip foundations	Cost-effective, easy	Lightweight, economical
home microclimate	Require forced ventilation facilities	Slabodyshaschy	High humidity displays, breathing	High humidity displays, breathing
Resistance to bending	Fragile, bending does not work	Devoid of plasticity, brittle, crack gives massive foundation during vibration, does not tolerate the transportation	Bending works well	Bending works well, does not crack during vibration foundation, transportation transfers perfectly
biostability	biostability	biostability	rots	Group 5 biostability
fire resistance	Material not flammable	Material not flammable	Highly flammable	Fire does not support
Thermal conductivity, W / (m × ° C)	0,560-0,850	0,140-0,320	0,150	0,07-0,17
Density, kg / m³	1150-1950	200-1200	450-600	400-850

Permeability of blocks arbolita only slightly less than the timber. Due to this property in the homes of derevobetona humidity level is always the best. The strength of wood-concrete blocks does not depend on the degree of absorption and moisture evaporation, so if its transmission walls do not collapse.

Useful advice!When choosing a product, pay attention to the product. If one end of their smooth, and all the others are quite different from it, from the purchase of the proposed party is better refuse, because this symptom indicates that arbolita production technology has been broken, and the cement is simply stack down.

The quality derevobetona significantly affects the degree of drying sawdust. If used only dry wood chips, the quantity of indoor units humidity will never be critical, so they erected from the wall are not afraid of frost. When used in moist sawdust, it is possible that after a few winters arbolit begins to lose strength. Indeed, at low temperatures, water will freeze, thus increasing in volume, which results, in turn, to the destruction of the binder component.

Among other practical properties of this material is to provide:

• not afraid of the load in tension;
• resistance to mildew and rot;
• He is not afraid of fire.

Thanks to the latter property, the degree of fire wood-concrete houses close to this figure of stone and brick buildings than wooden structures. However, if a large-scale fire occur within buildings, or it would be in a large fire zone, the walls will lose a significant part strength. These effects are less prone reinforced concrete, stone and brick, can not be said about other types of lightweight concrete.

Wood-concrete blocks, price per piece most popular forms

Modern industry produces two types arbolita - structural and thermal insulation. The material of the second type is not used in the construction of exterior and interior walls, as it is characterized by relatively low density and relatively low weight. It is successfully used for thermal insulation of buildings, houses built of bricks, lightweight aggregate concrete, and other building elements.

To create a bearing wall blocks necessary structural type. Their performance strength and density higher than that of similar products from the thermal insulation derevobetona.

Comparative characteristics of thermal insulation and structural arbolita:

type arbolita	Used in construction	Class Compressive strength	Strength, kg / m	Density, kg / m
Thermal insulation	wall insulation	In 0,35-1,5	M5, M10, M15	400-500
structural	Erection of load-bearing walls	V1,5-V3,5	M25, M35, M50	500-700

The most popular types of these products are wood-concrete blocks of the following types:

• great products derevobetona. They are used for masonry walls, subjected to a load. Sample sizes - 500 × 300 × 200 mm. Buy wood-concrete blocks of this type can be priced at 120 rubles. / Pc. They are marked as follows: D500, D600;

• small wood-concrete blocks. Advantageously used for laying insulating series and for the construction of non-load bearing walls of the lungs. Block Size - 190 × 190 × 300 mm. Stamps - D500, D600. As far as prices for wood-concrete blocks of this type, it fluctuates near the mark of 60 rubles. / Pc.

Wood-concrete blocks: the price is depending on the application

The cost of the product concerned is also affected by that for which it is used, and the configuration of a single product.

Useful advice!Buy wood-concrete blocks, on the surface of which there is no white bloom. It is a testament to the addition of adhesive, which is not allowed by the technology.

Consider the data on marks of products from derevobetona with the index of 600-650 kg / m³. Present in the table are - indicative as in different regions of the country they may be different.

The cost of different types of units and their specifications:

Type of	The price for 1 cubic meter, rbl.	Number of pieces in 1 cube	Approximate weight pcs / kg	Dimensions in mm
U-shaped block to form a notch or window webs armpoyasa	4900 (148.48 for 1 pcs.)	33	12	500×200×300
septum	5100	53,3	11,5	150×250×500
5000	40	15	200×250×500
wall	4300	26,6	22,5	300×250×500
4200	20	30	400×250×500

Features composition of wood-concrete blocks

The main components of derevobetona - it aggregates, chemical additives, mineral binders and water.

Organic additives function is performed:

• waste wood (pine, fir, poplar, fir, aspen, beech, birch);
• raw offal - fire flax or hemp;
• stalks of rice straw, cotton.

Among the most sought after aggregate relates wood material, in particular sawdust shavings with (1: 1, 1: 2), sawdust and wood chips with the chips (1: 1: 1), shavings, chips, droblonka. The above proportions of aggregate in Arbol accepted by volume rather than by weight. Usually, those who engaged in manufacturing of building blocks with their hands in a bucket used as a standard unit of measure. For example, a wood-concrete proportion of 1: 2 2 understood buckets shavings and sawdust one bucket. Instead of the last ingredient, you can use the fire flax or hemp stalks.

to the core requirements stated as follows:

• the impurity concentration in the bark chopped feedstock should not exceed 5% pine needles and 10% of the leaves;
• the particles should not be too small. Otherwise require more consumption of cement.

The main drawback of the material - its reactivity.

Note!In the preparation of the mix and the use of larch green wood all is not permitted without exception rocks.

Flax brome is a complete aggregate, but only under the following technological requirements:

• particle length less than 40 mm;
• bound by introducing chemical additives because of the presence of sugars in the composition;
• to improve the quality derevobetona in process material enters the processing procedure of lime milk (50 kg of lime per 200 kg of the aggregate);
• after treatment before being introduced into batch fire is maintained up to 2 days.

Related article:

Which blocks are better for building a house: an overview of a variety of materials

Classification, constituent materials, process parameters and dimensions. Distinguishing features, price-performance ratio.

Such technology allows to reduce the amount of portland cement and 100 kg per cubic meter 1 derevobetona. And there is one more requirement for raw materials must be free of signs of mold, rot, foreign particles. If you work for the production of wood-concrete blocks are carried out in the winter, it is necessary to control the presence of aggregate of ice and snow. From these inclusions another raw material preparation is necessary to get rid of.

Useful advice!When buying a product test. Acquire only the lot from which the samples dig chips hands will not work. This is a sign of good adhesion.

Chemical additives are introduced to ensure compliance with GOST arbolita and perform the following functions:

• accelerate hardening;
• controlled porosity;
• inhibit corrosion;
• provide the end product high bactericidal and insecticidal properties.

The use of additives is recommended no matter for which climatic zones of the country house projects have been developed from the wood-concrete blocks - from the Arctic and ending subtropical. In addition, special chemical additives provide improved product quality due to the possibility of using aggregate without pre-soaking.

The additives are used as:

• aluminum sulphate;
• slaked lime;
• calcium chloride;
• liquid glass.

The optimal additives considered to be calcium chloride and aluminum sulphate. The use of the latter compound allows to increase the strength derevobetona. This is due to the fact that aluminum reacts with sugars in the reaction and neutralizing them, translates into a harmless state.

The amount of additives in the wood-concrete blocks from the manufacturer, usually not exceeds 2-4%. In absolute terms, it is about 12 kg per cubic meter 1 derevobetona. Both options may be allowed use of additives - complex or separately.

Their proportional relation determined by the required strength derevobetona branded. For example, the mark M30 arbolit may contain the following combinations of additives:

• aluminum chloride (AlCl3) and calcium chloride (CaCl2) 4% by weight of cement used in the ratio 1: 1;
• aluminum sulphate (Al2 (SO4) 3) and calcium chloride - the same proportions;
• sodium sulfate (Na2SO4) and aluminum chloride 2% by weight of cement, the ratio of 1: 1;
• aluminum chloride and sodium sulfate (Na2SO4) 4% of the total weight of the cement in the ratio 1: 1.

The dimensions of wood-concrete slabs

The distinctive feature of these products from the blocks of derevobetona displayed in their title. The concept of "plate" means that such products unit thickness considerably less than its other dimensions - length and width.

For their production and use recycled wood chips and a binder component - cement. Production webs method performed compaction and baling. Compared with the process of production of boards from all brands of lightweight concrete to produce such products from arbolita it takes much less time (the duration of vibro - only 20 sec.). To branded products gained strength, they are left for several days in a room with a strictly vymerennym temperature conditions.

Useful advice!To ensure a long service life of the plates arbolita fulfill their external and internal finishing needed as soon as possible.

Currently, boards of arbolita available in the following sizes (unit - centimeters):

• Wall web (this is the biggest bar) - 28 × 118 × 229, 30/40 × 118 × 230;
• narrow webs (products upper webs doborki) - 28 × 58 × 229 30/40 × 60 × 230;
• Window pane - 28 × 58 × 81, 28 × 81 × 118 and 30/40 × 118 × 80;
• ordinary blocks of bridge - 28 × 178 × 58;
• Reinforced of bridge units - 28 × 238 × 58.

In the production process of external webs equipped with fastening reinforcing loops, they immediately covered "rough" facing layer. This layer consists of a cement-sand plaster, and its thickness is 150 mm. This solution allows the customer to save on the exterior.

Production of wood-concrete blocks with his hands

Making home derevobetona attracts the possibility of buying the necessary materials at a reasonable price. But for this it will be necessary to organize a sort of mini-factory with different equipment for the production of wood-concrete blocks. In principle, you can not buy the necessary tools, and the rent: even though they are not easy to find, but thanks to the Internet possible.

We already know that the wood-concrete blocks - it is a building material for the production of which is necessary to use certain components. Their list is as above, but the proportions look at next.

The proportions of the ingredients in one cubic meter derevobetona:

Mark arbolita	Water, l	Himdobavki kg	The organic filler kg	Cement, kg
M25. structural arbolit	350-400	12	240-300	300-330
M15. Thermal insulation arbolit	350-400	12	240-300	250-280

In practice, when there is no suitable measuring instruments at hand - scales and measuring tanks - professionals recommend to use the following formula: = 1 cubic meter derevobetona + 4 parts water 3 parts 3 parts cement chips. The amount of chemical additives remains the same - 12kg. To determine the correct weight will have to focus on the numbers present on the packaging.

What will need equipment and general method of manufacture

In the case when it comes to mass production of this type of building material (e.g., construction of houses in the cottage) without the machine for the production of wood-concrete blocks do not possible. On sale you can find examples of such equipment at the price of about 14 thousand. rub. with capacity of up to 40 products per hour.

If you plan to manufacture wood-concrete blocks for the construction of a private home, you will get the following devices should:

• capacity for the mixture;
• shaker;
• trap for chips;
• feed table;
• shock-shaking table;
• inserting into a mold;
• metal tray shape;
• Split form;
• vibroformirovaniya installation.

For manufacturing a mold using conventional wooden boxes. From inside their upholster linoleum. Arbolit lay in the form of layers. This should be done in 2-3 sets. After each layer Bookmarks carefully compacted.

Useful advice!To remove air from the mass of excess moisture and pierce its armature. This will increase the strength of the final product.

The last layer is not smooth, rough leaves. It should not reach the edge of the boards 2 cm. This space will be filled with plaster solution. Soaking in a block form is recommended at least 24 hours.

Which is better: arbolit or aerated

In order to answer this question, it is necessary to compare the properties of both materials.

Comparison of arbolita and aerated concrete:

block parameters	Arbolit	aerated concrete	Comments
Standard Specifications for bearing walls	200 × 300 × 500 (mm)	250 × 375 × 625 (mm)	The walls of the house and derevoblokov colder, because the element is less than the thickness
size error of +/- mm	5	1	The presence of irregularities on the surface of wood-concrete blocks complicates alignment of the walls, which in turn causes an increase in material consumption and the formation of seams between masonry "cold bridges"
Fire resistance, hour	From 0.75 to 1.5	3-7	Derevoblok less resistant to high temperatures
Shrinkage (mm per m)	0,4-0,5	0,35-0,46	Natural filler is characterized by a higher rate of shrinkage
Modulus, MPa	250-2300	from 1734	Wood-concrete block for loads better
Water absorption,%	40-85	<15	Absorb moisture derevoblokom facilitated by the presence in its composition of vegetable filler. Therefore arbolit requires reliable protection
Coefficient of thermal conductivity of blocks that are in the dry state, W / m²	0,08-0,17	0,072-0,14	Thermal insulation of aerated concrete above
Average density, kg / cubic meter	500-850	300-600	Wood-concrete blocks to create the foundation for a heavy load
Frost, loop	25-50	35-50	Products made of aerated concrete have a greater life

There is also another important criterion - comfort lining. Judging by the reviews, wood-concrete blocks of benefit in this respect from the production of aerated concrete. They do not crumble under mechanical stress. Therefore, the panels can be fastened using conventional anchors.

Some features of the building baths arbolita

Cost erection baths of this material is the same as the structure and assembly of wooden logs or timber. However, the use arbolita in masonry walls provide ample opportunities in layout and decoration both outside and inside. Inner lining can be made of standard "bath" material - or Lining block house. And the use of ceramic tile allows you to create interesting effects by making the interior of the space corresponding to its functional colors. Decorating the exterior walls can be anyone from the usual blockhouse under CYLINDRICAL bar and finishing a log.

But in any case, must be considered hygroscopic arbolita. That is, the wall bath should be carefully sheltered from the dampness.

Useful advice!Inside the building should bind with a vapor barrier, leaving a free space between the interior trim and blocks. Outside can be plastered or impose a decorative brick.

Wood-concrete blocks: reviews homeowners cons

When choosing a building material for the construction of the house, no harm will be to listen to feedback from domestic artists with skills in this area. Indeed, in contrast to the hype manufacturers, their opinion - objective. In addition, there exists another point concerning, inter alia, wood-concrete blocks: reviews of the owners homes contain information about what their mistakes were made during the construction of buildings of this building material. So by reading them, you can save not only time but also money.

Gap Analysis arbolita easiest to carry out by the posts on Internet forums building subjects. Below are excerpts from some of the messages.

"Working with Arbolito - a solid penalty. Deviation size sometimes reaches 20 mm! According to the manufacturer, this is consistent with the requirements of the GOST. To ensure the smooth surface of the wall had to spend a lot of time. For the completion of the work I have to invite builders. "

Anatoly Volkovets, Rostov-on-Don.

"Instead of the promised smell of wood and a healthy microclimate in the house the smell of the chemistry of some unknown origin. According to specialists of the construction company - it's all because of the entering into arbolit additives. The question as to whether it persists after finishing or simply erode with time, remains open. "

Nikolai Artemenko, Tyumen.

These two posts are not connected with the types of products derevobetona. But ignorance of the characteristics of the use of this building material often results in the emergence of negative reviews. Wood-concrete blocks, as mentioned above, there are, structural and thermal insulation type. If you do not see the difference between them will be available is not the same result that the owner intended.

"We live in a cold house arbolita of the third year. Warming was not originally planned. But, apparently, do not be possible without it. For the construction of a durable two-storey house with attic, I used the structural units of arbolita. I hoped, and so the house is warm. Most likely will need to invest further in its insulation insulation arbolita or some other material. "

Konstantin Savushkin, St. Petersburg.

After reading the information about the properties of wood-concrete blocks, as well as feedback from users, you can choose the most appropriate size and cost of an option for the construction of your home or baths.