DIY Fixed Formwork for the Foundation

Non-removable formwork for the foundation is used by builders for more than 15 years. They appreciated the universal fast technology for the construction of the foundations of large industrial, residential and private buildings. The main advantage of this method is to minimize the low -quality performance of work, the factor of the physical process and human participation. The manufactured polystyrene foam blocks for formwork requires the accuracy of the assembly accuracy according to the drawn up drawings.

Advantages and disadvantages of non -removable formwork

The use of the finished form does not change the main process of filling the foundation, they affect the duration of work, reducing the deadlines. Classical technology proposed this procedure:

1. Acquisition of material for formwork.
2. Assembly of the structure at the construction site.
3. Installation of the fence in a specially dug ditch.
4. Pour the concrete-cement mixture.

The non -removable form proposes to collect a enclosing barrier from ready -made blocks and install it in a trench.

Advantages of non -removable foundations:

1. Non -wrapped, have a category of fire safety g2.
2. The assembly does not require the cost of time and special knowledge of construction.
3. Seismic -resistant blocks strengthen the foundation vertically.
4. The low density of the blocks does not overload the foundation of the building.
5. The assembly does not require involving special equipment.
6. Moistenous material. Creates additional protection.
7. It does not contribute to the development of microorganisms and fungi.
8. Protects from the cold.
9. Reduces the stage of erecting the foundation by 5 or more times.

Disadvantages of technology:

1. Non -removable formwork is designed for single use.

The composition of the material for non -removable formwork

1. Standard - polystyrene foam. Thermal insulation, moisture -repellent, light material. It is produced by domestic manufacturers. The cost of formwork is $ 1 per linear meter.

• advantages of the material: Book price. Additional thermal insulation of walls;
• disadvantages: fragile, has low breathability.

2. Blocks from a mixture of chips and cement - arbolite. For reliability and strength, the wooden chips are treated with chemical compounds that increase protection against moisture, decay, fire. The special structure of the material is achieved by a chaotic location of the air spheres around the tree.

• advantages of building materials: high sound and thermal insulation ability. Used for the foundation and filling of ceilings;
• disadvantages: not an ideal surface, roughness or small recesses are possible.

3. Fibrilite blocks. They are made from a mixture of alkaline magnesite, Portland cement and wooden chips. The obtained blocks are environmentally friendly, without harmful chemical additives.

• advantages of the material: biofold, frost -resistant, endowed with a high characteristic of vapor permeability, durable, fireproof;
• disadvantage: not popular, rarely used due to the characteristics of the production process.

4. The patented technology “Concrete Relief” is the optimal solution for low -budget construction. The principle of the technological process is simple and allows you to independently make forms of ordinary and complex configuration. On a production scale, rental is carried out on camps and tables using rollers and templates. They use special molds, which makes it possible to pour any extraordinary or thin form with a complex profile. The reinforcement is laid inside, embedded and rolling castle elements are installed. It was the ability to produce thin -leaf products of a complex profile that predetermined the use of a method for the release of a lightweight shell of non -removable formwork. In the manufacture, cement, water, sand are used. Plasticizers and seals are not used.

• advantages of the method: manufacture of complex thin -profile elements.

Unique properties of the material: high frost resistance up to - 50 ⁰C, is not destroyed in climatic conditions with sharp temperature changes, high humidity, stable in aggressive media. The only material for non -removable formwork that allows you to give an aesthetic appearance of the outside. This is achieved by adding mineral wool, basalt, marble crumbs, mineral dyes or pigments.

DIY Fixed Formwork for the Foundation

With neat and accurate manufacturing, non -removable formwork is installed at home.

Materials and tools necessary for the technological process:

• Buy leaf material that meets the requirements: rotten resistance, elasticity, strength. The choice is made from plywood, impregnated with a special composition, sheets of CSP, flat slate.
• Buy a reusable formwork kit consisting of fitting screws and nuts.
• Prepare a supply of cement, sand, water for filling the foundation.

• Purchase reinforcing rods.
• Buy waterproofing material.
• Mineral heat insulator.
• Deep vibrator. The working part of the device is up to 40 mm. Or a piece of reinforcement long, equal to the height of the block, increased by 3 times.

Technology for the construction of the foundation for non -removable formwork:

1. The base of the foundation is covered with a waterproofer.
2. The reinforcing bars are driven into the foundation of the foundation. The distance between the rows is selected from its own calculations with a margin to the thickness of the mineral wool.
3. Blocks are put on reinforcing rods.
4. Lay the first layer. Horizontal reinforcement is placed in special grooves. The masonry is overlapped, with wire twisting between fragments of the reinforcing tab and the main vertical reinforcement. The first layer is the main one. In accordance with the building plan, at this level there are a border for internal partitions, door slopes.
5. Fix the shape of non -removable formwork when laying the second layer of blocks, ensuring the overlap of the joints. Monitor the coincidence of the sides of each layer. The laying process is similar to brick laying. A row displacement is also performed, which ensures the rigidity of the walls.
6. Connect the blocks vertically with grooves on the surface of the forms. To close a fairly easy pressure.
7. Perform laying the third layer of non -removable formwork. Align vertical seams.
8. They begin to fill the concrete. Carefully fill the voids and compact the solution. For sealing, use the deep vibrator or manually pushed and press the solution, exposing the air cavities with a piece of reinforcement, like a bayonet.

To build strong walls, fill the upper layer of blocks half, then the seam in monolithic concrete will be inside the polystyrene foam.

The bearing characteristic of the wall depends on the brand of concrete and the reinforcement class.

When erecting a monolithic wall, immediately plan the path of laying communal pipes and electric cables. Do not forget about ventilation, do the holes in the blocks in advance and carry out communications and wires to fill.

The finished structure with non -removable formwork has the form of a sandwich: a concrete monolith is placed between the polystyrene foam. The spilled walls have the initially high thermal conductivity and do not need additional protection.

The foundation of non -removable formwork. The video offers to get acquainted with simple construction methods:

Non -removable formwork for the slab foundation

The most reliable, but also at the same time, an expensive foundation is tile. More often it is called floating. For its manufacture, a large consumption of high -grade materials is needed: concrete, reinforcement. It is poured for low -suffering or heaving soil, in case of impossible arrangement of another base under the house. The thickness for a multi-storey building is aged at least 250-280 mm. For a private two -story building, a thickness of 200 to 210 mm is allowed. The density of reinforcing the foundation is not allowed below 100 kg/ cube. Sandy and gravel pillows each with a thickness of 100 mm-150 mm are laid under the foundation.

Increased requirements for the stability and reliability of the slab foundation impose certain requirements for the use of non -removable formwork. For a slab foundation, professionals advise using only fibrolyte or cement-brown blocks. They allow you to create complex forms with curved or bay windows. Fibrilite non -stroke formwork for the foundation. The price is from $ 0.1 to $ 2 per square meter. m.

The technology for installing a slab foundation begins with the digging of a pit and the alignment of its walls vertically. This is the main requirement that provides the correct subsequent construction of the walls. Non -removable formwork is also installed by levels and geodetic devices in vertical and horizontal planes. Laying is carried out in rows, simulating brickwork. Carefully align the joints vertically and put reinforcing bonding in the grooves.

Making a fixed formwork for a slab foundation yourself is a very complex process that requires the owner of knowledge in the field of planning and construction.

Non -removable formwork for the foundation. Reviews of craftsmen-professional

A project of a house with a foundation 11.6x11.6 m, with an average load -bearing wall. The height of the foundation is 1.8 m. In the ground 1.3 m and 0.5 m of the base on the surface. The foundation is designed for freezing earth, with heaving soil made of chernozem and loam. The method of erecting casting to the ground + non -removable formwork from the foam.

The user ordered drawings for the builder of the house in a private company offering services in Internet space.

The construction was carried out in a area where absolutely all developers pour concrete into the ground and do not use formwork. It was decided to make a non -removable formwork of extruded polystyrene foam at a price of $ 0.1 per sq. m. Above the ground, it was decided to perform low formwork from the base boards. For the Earth, there were two options for casting concrete. The first with the roofing material was immediately rejected: he will not lie with an even array, will not hold moisture. The second option is with polystyrene. The benefit of the material in durability, it has a service life of 15-18 years. This material is also rejected due to mice. They live perfectly in it, gnaw at the moves and make themselves warm minks. For a rural area, a mouse in housing is a disaster. As a result, the attention was drawn to extrusion foam polystyrene. Its advantages:

1. Durable.
2. Not fragile, does not crumble.
3. It has high properties of thermal conductivity.
4. Not suitable for housing of small rodents.

The only drawback of the material:

1. The cost exceeds the price of foam by 3 times.

After analyzing the prices of EPPS with a price of formwork 1.9 m high from a board with a thickness of 50 mm, they received that extrusion material is cheaper and simultaneously saves funds for insulation.

The second factor in favor of EPPS was that the walls of the foundation are spilled even, which means that on the spring float of the soil they will not cling to it.

Bottom line:

1. They dug up manually a trench. The walls immediately gave maximum smoothness and vertical coincidence for the exact and correct installation of the EPPS blocks in the ground.
2. At the bottom of the trench, a pillow of sand was poured around the perimeter (it is free in a given area). The height of the pillow is chosen 200 mm. The sand was previously wetted, and then laid and tamped in the pit. The purpose of the bookmark is the level of the bottom.
3. On top of a sand pillow, a plastic film of 200 microns was laid. The joint was glued with tape. The film was intended to preserve cement milk and to give concrete additional strength.
4. A roofing material was laid on top. Flash at the junctions. To facilitate the knitting of reinforcement and movement along the bottom of the trench.
5. Next, the blocks of non -removable formwork were installed according to the described methods.
6. Pour a concrete mixture.
7. Installed the upper wooden formwork for the base. The installation of EPS sheets was carried out inside the wooden upper formwork using self -tapping screws.

The beginning of the filling was carried out on 15.06, the end of work 23. 08.

The difficulties that the developer faced:

1. It is necessary to dig a trench as early as possible, namely, as soon as local land allows you to dig. In summer, due to rain, the work is not only suspended, but also spoil. The bottom of the trench is entered by garbage, the walls are washed with water.
2. Pass the auxiliary workers in the winter. In the season, this costs many times more, at best. At the worst, you will just be left without workers.

Non -removable formwork for the foundation photo made according to the project under consideration: