The article discusses 4 types of fixed formwork - their advantages and characteristics. Prices for blocks (puzzles) made of polystyrene foam and video about the installation.
Features and Benefits of Fixed Styrofoam Formwork
Expanded polystyrene fixed formwork
- the cheapest, simplest and additionally durable. It allows air to pass through (allows the walls to "breathe") and at the same time has improved thermal insulation properties. This is the most popular option for building a country house and not only.
The technological process of the installation consists in the gradual pouring of concrete mixture into specially prepared rectangular foam containers.
In the photo there are three blocks of polystyrene: straight, angular at 90 and angular at 45 degrees. Choosing the type of formwork made of expanded polystyrene, you should pay special attention to a number of advantages:
- expanded polystyrene has high thermal insulation properties (there is no need after pouring the foundation and walls from foam concrete - to beat them with foam, everything is already in place);
- fixed formwork is perfect for building walls in any premises;
- high level of fire safety;
- with the correct installation of the formwork, a fairly quick installation process can be achieved;
- the underestimated density of structures is responsible for protecting the base from overloads;
- insignificant weight of blocks;
- makes it possible to create an energy-saving foundation, thanks to the heat retention of the foam;
- has high tightness and moisture resistance;
- maximum protection against fungi, rotting and termites;
- the ideal balance of high quality and relatively affordable cost of products.
In the photo, the types of structures of fixed formwork blocks made of expanded polystyrene The only disadvantage This type of formwork can be considered a one-time use, where foam blocks remain forever in the concrete wall of the building foundation.
Other very popular types of permanent formwork
Today, you can find various types of permanent formwork on the construction markets, the installation technology of each of which is carried out according to certain rules - careful preparation of the future structure, correct installation on the trench, as well as pouring a special construction mixture.
1. Chip-cement formwork
- it has high sound and heat insulation properties, due to the presence of a large number of air bubbles in the material, which are evenly distributed between the wood chips. The entire surface of the chips is covered with a special protective chemical raster, which is fully responsible for the good strength and reliability of the parts.
Wooden material has maximum resistance to high levels of humidity, to the rapid process of decay and combustion, which makes it possible to safely use chip-cement formwork when pouring floors.
2. Fiberboard fixed formwork (wood concrete)
- an environmentally friendly construction made of a special mixture of fiberboard, with a small content of fine wood chips and caustic magnesite, the absence of which is most often replaced by Portland cement.
The most common advantages of this type of blocks are:
- vapor permeability;
- high biostability;
- frost resistance;
- excellent fire safety;
- long service life;
- high sound absorption;
- maximum material strength.
3. Universal block
- a fairly comfortable structure, consisting of thin-walled concrete blocks. The main task of the technology is the active use of templates, rollers, as well as significant compaction of concrete and removal of formed pores. Distinctive characteristics of universal block formwork:
- special technology of concrete rolling makes it possible to create a variety of complicated product shapes, without the use of a sealant, certain additives and plasticizers;
- if necessary, this concrete can be used in a severe temperature regime with fifty degrees below zero;
- perfectly withstands any humidity and thermal conditions;
- not susceptible to aggressive media and chemicals.
The order of the technological process for the installation of permanent formwork
It should be noted that there is no need to have special professional skills in construction work in order to correctly apply non-removable blocks for pouring concrete. Everything can be done by hand. To do this, you just need to strictly follow the basic requirements and rules during installation.
It is important to remember that absolutely any type of formwork must be fitted onto a flat waterproofing surface, on top of the foundation of the future structure. Pre-prepared forms are put on the protruding reinforcement rods that are firmly held in the foundation.
When laying the first row of blocks, the reinforcing bars are carefully inserted and fixed into the block puzzles. With the help of building puzzles, you can quite easily and quickly connect the forms, where a slight pressure provokes a strong closure of the structure.
When starting to lay the third layer, it is important that the seam is sufficiently straight and vertical. Then it is necessary to pour concrete, not forgetting to control the process of the formation of voids, which can be eliminated by means of a deep vibrator or a special "bayonet method".
Fixed formwork made of expanded polystyrene: price
Building a house from fixed formwork saves time and even money. If you consider that after the construction of the house it will be necessary to insulate it with foam, then this type of construction surpasses the usual brick building or foam concrete in that you do two works in a row in one fell swoop. Here are the detailed prices for fixed polystyrene formwork (prices are for each puzzle):
Marking |
Density kg / m3 |
Number of blocks by height poured with concrete in one step |
Price per unit in rubles |
1. БСS-С М 20 * prefabricated wall block |
20, 0 | 2 | 117 RUB |
2. BSS-SM 25 * prefabricated wall block |
25, 0 | 3-4 | 131 r |
3. BSS-S M 20 * (75x50) prefabricated wall block with a thickened outer wall |
20, 0 | 2 | RUB 150 |
4. BSS-SM 25 * (75x50) prefabricated wall block with a thickened outer wall |
25, 0 | 3-4 | 190 RUB |
5. BSS-SM 20 * prefabricated wall block for internal partitions |
20, 0 | 2-4 | 117 RUB |
6. BSO-S M 20 main wall block |
20, 0 | 2 | 130 RUB |
7. BSO-SM 25 main wall block |
25, 0 | 3-4 | RUB 180 |
8. BSO-S M 30 main wall block |
30, 0 | 5-6 | 188 r |
9. ЗТ М25 end cap |
25, 0 | - | RUB 25 |
10. MPP No. 2 ** metal-plastic jumper, standard |
- | - | RUB 9 |
11. MPP # 15m ** metal-plastic jumper (lightweight) |
- | - | RUB 6 |
12. MPP №7 ** metal-plastic lintel for internal partitions |
- | - | RUB 6 |
13. MPP No. 20 ** metal-plastic lintel (thickened concrete cavity 200 mm) |
- | - | RUB 10 |
14. Funnel for pouring concrete galvanized sheet (1 mm) |
- | - | 2000 RUB |
* - price for a set of plates for a prefabricated block without metal-plastic bridges; ** - consumption for 1 block up to 9 bridges (depending on the construction of the wall and the method of filling).
Videos
How many floors can a warm house with fixed formwork blocks be built using the technology?
Another video - the beginning of construction, how to properly concreting walls using this technology and other informative video tutorials and tips: