Durisol permanent formwork. House made of chip-cement permanent formwork (Velox, Durisol)

...Why do you think Arbolit blocks are placed on pallets so irrationally? You won't guess right away! It turns out to be drying. The water content in such blocks is 40%. And this water is taken to the construction site, placed in the walls, where it will reach an equilibrium state in a year and a half. If earlier the blocks from this water do not self-destruct from rotting.

It's immediately obvious that you're in prefabricated monolithic floors you understand better than wood concrete. To make it clear to you that you just wrote complete nonsense, I will give you an example that you can do with any wood concrete block. You take a block, weigh it, put it in water for say 5 hours or 10 hours or a day, it doesn’t matter. The block will draw all the water into itself in the first few hours. After that, you pull the block outside to Fresh air. The weight of the block will return to its original value in such heat as today, in a day or two, or at most in three. If the weather is very damp and humid (the block will lie under a canopy), then the weight will return to its original value in a week, maximum two weeks. This has been verified not only by us, but also by many customers of wood concrete in different parts of the country who have already built their houses.

Arbolit is non-hygroscopic material, it does not pull moisture from the air. What you say about waiting 1.5 or 2 years for equilibrium humidity, this applies to aerated concrete, which gradually releases moisture after production and at the same time draws moisture from the air, because has very high hygroscopicity and, accordingly, sorption humidity.

The use of wood concrete and the use of Durisol and Velox are different sides one medal. Wood concrete, despite the high price per 1 m3, will always be in the niche of economical construction, i.e. where people will use low-skilled and, accordingly, inexpensive labor, and at the same time the customers themselves accept Active participation either in construction or in supervising the construction of a house.

Masonry made from Durisol or Velox requires greater responsibility and professionalism of builders, because... there are monolithic works there. Therefore, this sector will almost always use organized construction teams and firms with to varying degrees professional skills.

You don't read the documents at all. In the link above, I gave you SNiP, which says in black and white that laying bricks and blocks on mortar should be at least 12 mm.
The thermal conductivity of perlite solutions is approximately 0.2 W/m°C and the thickness of the perlite solution does not affect its thermal conductivity in any way. Simply increasing the seam increases losses precisely because of the height of the seam and that’s all. But on a solution with such thermal conductivity it is practically not important, 10 mm. seam or 15 mm.

...And Vladimir simply did not have time to learn all the features of the material. Many people are fascinated by the presence of sawdust in Arbolit. It seems to them that they will almost live in a wooden house.

People who have lived in arbolite houses for decades feel very good. We have it on the forum Babr, to whom Karluk Last year I built a house from monolithic wood concrete near Irkutsk. You tell him, who has already spent the winter in such a house, that wood concrete is a bad material. Ask what he burned with and how much he burned and what the temperature was in his house. I think you'll be surprised how pleased he is.

P.S. Wood concrete is made from wood chips, not sawdust.

Durisol blocks are a system of permanent formwork and are designed for the construction of vertical building structures: outdoor load-bearing walls, internal load-bearing walls and partitions. The technology is also suitable for multi-storey buildings.

DURISOL permanent formwork blocks are ideal for projects where horizontal and vertical dimensions are multiples of 250 (mm). The blocks have a standard length of 500 (mm) and height of 250 (mm). The thickness, depending on the purpose, is 150, 220, 250, 300 and 375 (mm) for various series.

SIMPLE INSTALLATION in a video file and about the construction technology itself from Durisol, see here: and

https://www.youtube.com/watch?v=2fW05GX-7sw&feature=youtu.be And https://www.youtube.com/watch?v=s0GOgQnzy1g

Watch a video showing the strength of the material, its fire resistance and fire safety, as well as a review from the owner of a house built from Durisol in the village of Turkovshchina by following the linkhttps://www.youtube.com/watch?v=JwlavFewVOw&feature=youtu.be

Construction of houses from Durisol blocks: why, why and how? see video https://www.youtube.com/watch?v=1lS1e1XmXtE

For various series, the system elements are:
- Standard row blocks (N),
- Universal blocks (U),
- Crown blocks (Dr),
- Additional row units (EA).
Cutting universal blocks (U) at designated locations on the walls (formed during production) allows you to obtain half blocks directly on the construction site. Cutting is done with any saw (manual or mechanical).

Additional (additional) row blocks (EA) are laid at support points (when forming corners) and are designed to maintain the rules for tying the outer walls.
The weight of row blocks ranges from 9 to 14 (kg). To build 1 sq.m of wall, only 8 blocks are needed.

General rules when installing permanent formwork DURISOL (Dyurisol)

Durisol permanent formwork blocks are delivered to the construction site in packages according to type.

Before starting installation on the foundation, it is necessary to mark the contour of the external walls, the location of window and door openings, interior walls and partitions. Start laying the blocks from the corners, taking into account the openings.

For a monolithic structure built from Durisol blocks, it is necessary to provide a flat horizontal surface, which is created using a leveling mortar for the first row of blocks along the edge of the foundation or on the floor panel.

Minor adjustments to the joints of the horizontal and vertical planes are made using wooden wedges. All other rows of blocks are laid according to the dressing rules with the top row offset by 1/2 of the block relative to the bottom.

The blocks must be installed close to each other “dry”, without the use of binding solutions.

Arrangement of corners.

The corners are mounted from universal blocks (type U). For external walls, these units come with 3 insulation inserts. when forming internal corners one insert is removed. In corner blocks, before pouring concrete, it is necessary to cut out a part of the end and front walls of the U block at the top and bottom to ensure its joining with the adjacent blocks of the row when pouring the concrete mixture.

Construction of openings

The end surfaces of window and door openings in walls made of Dm 15/9, Dm 22/15, DSs 30 and DSs 37.5 blocks are laid out from universal blocks (U) and half blocks (U/2).

Lintels over openings up to 2.5 (m) wide are made using horizontally placed opening blocks (U/2) with cut-out transverse partitions. If the width of the openings is more than 2.5 (m), you can use solid opening blocks of type (U).

It is necessary to lay blocks at the lintels on the pre-installed temporary formwork and strengthen them with reinforcement for structural strength.

In a number of blocks under window openings It is necessary to place two reinforcement bars with a diameter of 8 (mm). The fastening must cover at least 75 (cm) of the next part of the wall.

When designing opening lintels, it is necessary to calculate static loads for each specific project.

Installation of internal partitions
The laying of partitions is carried out in accordance with the general rules.

At the junction of partition blocks with blocks outer wall It is necessary to make cutouts in the side walls of the blocks in order to ensure the integrity of the concrete core when pouring. To strengthen the joint, it is recommended to lay reinforcement in every third row of blocks.

Crown and ceiling arrangement

The Durisol permanent formwork system allows the use of any type of floor. To form the crown row of external walls under the ceiling, U-type blocks are used, which are cut to the right size in height to give the blockL- figurative form.

Crown blocks type DMs 15/9 Dr are installed on cement mortar or construction adhesive. They are used in the construction of external walls from blocks 37.5 (cm) thick to insulate the end of the floor.

To strengthen the structure on the crown row, it is necessary to install a horizontal reinforcing belt made of steel rods with a diameter of 10 (mm), at least 4 (pieces) per floor, around the perimeter of the walls.

Laying concrete mixture

Concrete mixture for filling internal cavities in masonry made of DURISOL blocks (Durisol) performs the function statically durable frame wall that carries the load of the building. Concrete must comply with GOST 25192-82*, GOST 7473-94. Depending on the load on the building, they are used different types concrete - class B15, B20, B25, B30.

The concrete class must be the same for the entire floor. It is most effective to fill the blocks with concrete mixture after installing 3 - 4 rows. The pouring height should not exceed 100 (cm) (4 rows of blocks). The concrete mixture used must be of such a consistency that it can penetrate into all the cavities formed in the wall frame.

Filling cavities with concrete can be done with a hand bucket (on small construction sites), or with a crane with a concrete bucket or using a concrete pump. Concrete compaction in low-rise buildings is carried out manually or using an in-depth vibrator with a vibrating attachment with a diameter of no more than 4 (cm).

If concreting is suspended, it is necessary to pour concrete only up to half of the last row, and install metal rods in the concrete mixture. The embedded reinforcement is inserted in such a way that it penetrates approximately 20 (cm) into the concrete mixture. The installation step of the rods should not exceed 50 (cm), and the total area cross section should be a minimum of 1/2000 of the cross-section of the surface of the concrete core.

Plastering the surface

DURISOL permanent formwork blocks are an excellent base for plaster. When performing plastering work, you should be guided by generally accepted standards. Before the beginning finishing works you need to wait 28 days for the concrete core to become sufficiently strong. Drying time depends on climatic conditions. The recommended humidity for wall masonry is 14%. Before carrying out plastering work, you should install door frames, window frames and install utility networks. The surface on which the plaster will be applied should be cleaned of dust to improve adhesion and protect it from precipitation. The air temperature should not be lower than +5 C. Plastering works If possible, it should be done from the inside first and then from the outside.

In general, finishing is carried out in three layers: preliminary spray, main plaster and finishing layer. Before applying plaster, the wall must be cleaned and dried. It is important that after application cement mortar the gaps in the joints of the blocks were completely sealed. The pre-spray must be sufficiently hardened before subsequent coats of plaster are applied.

Equipment used when working with permanent formworkDurisol(Durisol):

Hand or power saw
- spirit level, plumb line, wooden wedges
- shovel bucket with long attachments, wheelbarrows or two-wheeled carts for concrete
- construction hoist for supplying blocks or concrete (for manual work)
- concrete pump for pouring concrete from a container (on larger construction sites)
- metal loading funnel for blocks – used when filling with concrete from a container
- deep vibrator with a nozzle with a diameter of no more than 4 (cm) (on larger construction sites)

If you want to buy permanent formworkor get advice from our specialist, call: +37517 281-72-30, +37529 635-33-33

Durisol permanent formwork is hollow wall blocks made from wood chips coniferous species trees, cement and mineral additive. Back in 1923, the Dutch came up with the composition of this wood concrete. And only 15 years later in Switzerland they launched industrial production blocks. Today, factories producing this material are scattered around the world. At the end of World War II, this material was used to rebuild Western Europe. The buildings are still strong and look great.

In the Soviet Union, it had a similar composition, but unlike Durisol blocks it is full-bodied. Hollow arbolite blocks as permanent formwork were not produced at that time.

Durisol blocks consist of 80-90% wood chips coniferous trees(except for larch chips), Portland cement and mineral additives used to eliminate wood sugars. Some types of blocks contain polypropylene inserts to improve thermal insulation properties.

Manufacturers produce various series of Durisol blocks: for the construction of fences, external and internal load-bearing walls, interior partitions. Each series represents a set of elements from corner, additional blocks and elements for lintels over window and doorways. In fact, Durisol permanent formwork is a kind of construction kit that allows the construction of buildings of any configuration and complexity.

Dimensions of Durisol blocks

The blocks have standard sizes length 500 mm and height 250 mm. The thickness varies depending on their purpose and is 150, 220, 250, 300, 375 mm. The wall has a size of 50 mm.

Types of Durisol blocks

Each element of the series has its own designation depending on the type:

(N) are standard row blocks. They have a lilac color. The weight of each varies from 9 to 14 kg depending on the series;

(U) – universal (corner) blocks. They can be cut in designated places, even hand saw, directly on the construction site to obtain a half block (U/2);

(Dr) – crown blocks;

(EA) – additional row (additional) blocks for forming openings and walls. They are gray in color. They are installed in certain places when forming corners for dressing external walls.

Durisol block series

Each Durisol series has its own abbreviation and purpose:

DM – series designed for the construction of load-bearing walls and internal partitions;

DMi – material series high strength for the construction of internal and external load-bearing walls;

DSs – a series of blocks with liners made of thermal insulation material for external walls;

DSi is a series with high acoustic properties, designed for the construction of noise barriers.

Each series of Durisol permanent formwork elements after the letters has numbers indicating the overall thickness and width of the internal cavity (thickness of the internal frame after pouring concrete).

Series for partitions and load-bearing internal walls

Includes the following series: DM 15/9, DM 22/15, DMi 25/18. Block types: (N), (U).

Series with built-in thermal insulation for external walls

Includes the following series: DSs 30/12, DSs 30/15. Block types: (N), (U), (EA).

Series with high thermal insulation properties for external walls

Includes the following series: DSs 37.5/14, DSs 37.5/12, DM 15/9. Block types: (N), (U), (EA), for the DM 15/9 series - type (Dr).

series DSs 37.5/12

Permanent formwork Durisol - the process of building walls

Durisol permanent formwork has enough simple technology construction. The laying is done according to the same principle as bricks, but without the use of a binder mortar, that is, dry. The masonry is done so that the internal cavities of the blocks lying on top of each other coincide. To bandage adjacent rows, use corner elements or half (U/2) Durisol universal blocks.

After the row is installed, reinforcement is performed: 8 mm-10 mm reinforcement is placed horizontally and vertically in the holes of the blocks. The connection of horizontal reinforcement between adjacent rows, as well as horizontal and vertical reinforcement in a row, is performed using ordinary wire twisting. When laying horizontal reinforcement in blocks, if necessary, cut small grooves. Then, using the same principle, the next row is laid, stringing each element onto protruding vertical reinforcement (for convenience, use reinforcement 1.5 - 1.8 m long).

After 3 or 4 rows are folded, concrete is poured into the internal vertical cavities. Fixed formwork is poured until half of the cavity of the upper block is filled, so that when subsequent concrete is poured, the cold seam ends up inside the cavity. After pouring, the concrete is compacted with a vibrator (the diameter of the working part is no more than 40 mm) or manually (by bayonet), using, for example, a piece of reinforcement.

Then the next 3-4 rows of permanent formwork are erected, reinforced and poured, and so on until the end. Thus, a powerful load-bearing frame of concrete pillars is created inside the wall.

The approximate consumption of concrete for Durisol permanent formwork is 0.075-0.125 cubic meters per 1 square meter of blocks.

Advantages of Durisol blocks

1. Heat saving. The material has high heat-saving properties (heat transfer resistance up to R=3.52 m2 ˚C/W) and heat accumulation. Durisol permanent formwork has a thickness of no more than 375 mm, which allows you to increase usable area and reduce the weight of the house structure.
2. Soundproofing. Durisol permanent formwork has a high sound insulation capacity of about 50-60 decibels, which makes it possible to create noise barriers, for example, along highways, railways, at industrial enterprises.
3. Vapor permeability. The material, due to its porous structure, has a high vapor permeability rate, only slightly inferior to wood. There is natural air circulation through the walls, that is, the walls “breathe”. The balance of air temperature and humidity and the constancy of the internal microclimate are maintained.
4. Environmentally friendly. The composition of the blocks indicates that the material is made from natural raw materials and does not emit harmful substances. Essentially, its composition is wood and stone.
5. Fire hazard. The material is classified as a low-flammable material (gr. G1), it is hardly flammable (gr. B1) and upon contact with an open fire, practically does not produce smoke (gr. D1). The fire resistance of the wall under load is more than 2.5 hours.
6. Frost resistance. Permanent formwork Durisol has high frost resistance of the material, in the absence of constant dampness. Able to withstand sudden temperature changes (more than 300 cycles).
7. Biological resistance. The highly alkaline composition and the property of not absorbing moisture protects the material from rotting, mold and microorganisms.
8. Manufacturability and functionality. The above types of blocks allow the construction of structures of any architectural shape; in addition, the material is well cut, grooved and drilled. The surface of the material makes it easier to finish the wall with plaster.
9. Durability. Durisol permanent formwork has a very rigid frame, which ensures high durability of the structure.

Disadvantages of Durisol blocks

1. To eliminate voids in the internal cavities of blocks during concrete pouring, constant increased control over the pouring and compaction of each cell is necessary;
2. Durisol permanent formwork is quite expensive, for example, in comparison with monolithic wood concrete;
3. Many people question the environmental friendliness of polypropylene inserts in some types of Durisol blocks, especially the issue of their release of harmful substances when high temperatures(for example, in case of fire).

Construction technology based on wall chip-cement blocks of permanent formwork was first used in the 1930s in Holland. After World War II, inexpensive technology that made it possible to build prefabricated houses became widespread in war-torn Germany. The Durisol brand appeared in Austria. In the USA, Durisol has been used in construction since 1953. Unlike Russia, in Great Britain, basalt wool is used as insulation inside the blocks rather than polystyrene foam.

Durisol permanent formwork blocks based on wood chips and cement are intended for monolithic construction without the use of binders mortars and adhesive materials. Durisol blocks provide excellent thermal insulation (heat transfer resistance up to R=3.52 m 2 oC/W) due to a layer of polysyrene foam and excellent heat accumulation due to a reinforced concrete core. Durisol blocks provide high sound insulation (up to Rw=60 dB). The absence of a continuous concrete or polystyrene foam contour in the walls allows them to conduct steam well through the woodchip-cement structure of the blocks. Walls made of Durisol blocks “breathe” perfectly, providing a comfortable microclimate. Durisol blocks are fireproof: they correspond to groups G1 - low-flammable, B1 - low-flammability, D1 - low smoke-generating ability, the fire resistance of the wall under load is more than two hours. A wall plastered with 2 cm plaster made from Durisol blocks is non-flammable. Walls made from Durisol blocks are resistant to weather conditions and are highly resistant to the formation of mold, mildew and rotting. Chip-cement blocks are processed as easily as ordinary wood.

Durisol technology is used not only for the construction vertical walls low-rise buildings, but also for the construction of buildings of 4 or more floors.

Durisol blocks have a standard length of 500 mm and a height of 250 mm. The thickness of the blocks is 150, 220, 250, 300 and 375 mm. Inner space blocks are filled with concrete mixture. The concrete mixture for filling the internal cavities in the masonry acts as a load-bearing frame of the wall, taking the load from the floors and roof of the building.		Construction system Durisol combines natural Construction Materials- wood and stone, in new modern form. The manufacturing technology of Durisol blocks allows us to obtain an environmentally friendly product with excellent structural properties.
Chip-cement blocks of Durisol permanent formwork are produced under St. Petersburg- in the village of Razbegaevo.		Cutting universal blocks (U) Durisol allows you to produce half blocks or blocks of special shapes directly on the construction site. Cutting can be done with any saw (manual, electric or chainsaw).
Normal row blocks (N) Durisol lilac color, and additional (additional) row blocks (EA) gray are laid when forming corners and openings. The weight of Durisol row blocks ranges from 6 to 14 kg. To build 1 m2 of wall, only 8 blocks are needed.		The blocks are installed end-to-end (groove - tongue) to each other “dry”, without the use of binding mortars, thus no thermal bridges are formed, the surface of the walls is smooth, which is important for plastering work.
Laying the first row of blocks starts from the corners, taking into account the walls and openings.		All other rows are laid according to the ligation rules with an offset of 1/2 blocks (vertical joints should run through the center of the blocks of the bottom row). The main requirement for ligating Durisol blocks is to ensure continuity of the concrete core during subsequent pouring of concrete.
Every third row of masonry is reinforced with horizontal reinforcement bars. To strengthen the structure on the crown, it is necessary to install a horizontal reinforcing belt: at least 4 reinforcing bars with a diameter of 10 mm. It is most effective to fill the blocks with concrete mixture after installing 3-4 rows of blocks. The fill level should not reach the edge of the top block (with the exception of lintels and the last row of the wall). The height during simultaneous filling should not exceed 100 cm (4 rows of blocks). The concrete mixture used must have such a consistency that it can penetrate into all the cavities formed in the wall frame made of Durisol blocks. Grain size of stone filler material		should be no more than 1/10 of the width of the concrete core of the blocks. Concrete compaction in low-rise buildings is carried out by manually baying or using an in-depth vibrator with a vibrating attachment with a diameter of no more than 4 cm.
Reinforcing cages for reinforcing lintels over door and window openings. To reinforce openings up to 2 meters, steel reinforcement with a diameter of 12 mm is used. When reinforcing openings over 2.5 meters, reinforcement with a diameter of 30 mm is used for the reinforcement cage.		Lintels over openings up to 2 m wide are made using vertically placed blocks (U/2) with cut transverse partitions. In a number of blocks under window openings, it is necessary to lay reinforcement from 2 rods with a diameter of 8–10 mm with an extension of at least 75 cm into the part of the wall adjacent to the opening.
The lintel blocks must be laid on pre-installed temporary formwork and the structure reinforced with reinforcement. Before removing the supports and starting finishing work, you must wait 28 days for the concrete core to gain the necessary strength.		Window frames and doors must be fixed into the concrete mass using sheet steel, anchor screws, using fasteners made of binding wire, etc.
Vertical and horizontal reinforcement of the concrete core of a wall made of Durisol blocks. If concreting is suspended, to connect the layers of concrete, it is necessary to insert a 40 cm long steel rod into every second cavity in the block. This fastener must be installed so that it extends 20 cm into the concrete mixture of both concrete frames being connected. Communications can be missed in the voids of blocks. Passage sewer pipe		through the wall.
Ventilation ducts of the bathroom of the house inside Durisol blocks. Installation of formwork for monolithic casting reinforced concrete slab		ceilings If the wall thickness is greater, it is possible to use sawn Durisol blocks as permanent formwork.
Reinforcement connection of the concrete core of walls made of Durisol blocks with the reinforcement frame of a monolithic reinforced concrete floor.		Reinforcement frame for a monolithic reinforced concrete floor of a house made of Durisol blocks.
Removable formwork for a monolithic reinforced concrete floor slab.		Masonry made from Durisol blocks allows you to install any floor structures, including prefabricated wooden ones on wooden beams. Durisol blocks are an excellent working base for plaster. Before finishing work begins, it is necessary to wait 28 days so that the concrete core is sufficiently strong. For additional To avoid damaging the plaster, it is necessary to install door frames, window frames and install utilities and communications in advance. The air temperature should not be lower than +5°C two days before finishing work, as well as during the application of plaster and its drying.
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