Those who are fortunate enough to independently build their own homes from scratch, it is well known what a huge role is played by the process of building its foundation, and in particular - the assembly of formwork.
You can simplify this work by using such an achievement of building technologies as a fixed formwork for a foundation.
Contents:
- Design and benefits of
- Assembly features and limitations
- What prices and where to buy?
Device and advantages
This device is a system of individual elements or blocks assembled in a single structure, installed directly at the location of the future foundation.
Various materials are used for its creation, however the most common is a non-removable formwork for a foundation of expanded polystyrene and polystyrene concrete.
The biggest advantage of the former is its light weight, its ability to store heat well and its relatively low cost.
Polystyrene concrete is distinguished by higher strength, however it has more and all the worst thermal insulation properties.
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Much less often used is another variety, made from fibrolite slabs, which are a mixture of cement and chips.
In this case, the presence of a tree at its base is both a positive quality( this material holds heat much better), and a disadvantage( the service life of such a filler is much shorter than synthetic analogs).
Well suited for creating complex and curvilinear structures. In addition, installation of fibrolitic structures is allowed even at rather low temperatures.
Fixed formwork for the base of expanded polystyrene foam has cavities in which the reinforcement is located, providing the structure with better rigidity and reliability.
For the same purpose cross-type jumper is used, installed inside the blocks, which prevent their deformation during the filling of concrete mixture in them.
The foundation for non-removable formwork, in addition to the speed and convenience of erection, has a very significant and undeniable advantage.
Unlike the removable type, it already has good thermal insulation characteristics at the stage of installation, which saves on further measures for its insulation and sound insulation.
The use of this kind of construction provides better stability of the erected building to possible shrinkage and soil movements.
In addition, due to the use of formwork of non-removable type, better saving of concrete mortar is ensured and higher accuracy of foundation construction work is guaranteed.
Assembly features and drawbacks
The construction of a foundation of non-removable formwork is a fairly simple process that does not require special training and skills.
The convenience of working with this design is ensured by the perfect match of the geometric parameters of its elements and the presence of special locking joints, by means of which the blocks are joined without the use of special building mixtures and solutions.
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Thus, it is possible to build a base of any type, however, monolithic or prefabricated concrete foundations may be more preferable.
The installation process is to connect the individual elements of the structure, after which it is filled with metal reinforcement and poured with concrete.
The main difficulty in this case is the laying out of the first row of blocks.
In carrying out this work, it is necessary to ensure that all bends of internal partitions, slopes were placed in the right places, as indicated in the project.
Fixing the shape of the structure occurs when laying its second row.
It is important to control the exact coincidence of its lateral and vertical joints, laying out blocks according to the principle of a child's designer or brickwork.
In addition to the undoubted advantages, the concrete fixed formwork for the foundation also has some "weaknesses".
These include:
- "Fear" of being in the open sun. With a long time in such conditions, polystyrene becomes brittle and can crumble;
- The need to attract special building tools, for example, a construction vibrator, which serves to better distribute the concrete solution inside the structural elements;
- Need for an additional waterproofing layer;
- Unable to reuse;
- High cost.
What prices and where to buy?
On the last point it is worthwhile to dwell in somewhat more detail.
Despite the fact that the high price of fixed formwork for the foundation is, in fact, its most serious drawback, this small disadvantage does not detract from the rest of the advantages of this innovative device that makes the process of building a house more convenient, quality and modern.
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Considering the fact that the cost of wooden boards used to mount the shields of classic, removable formwork can not be called low, and taking into account the laboriousness of the process for its manufacture and subsequent pouring of the foundation, it can be concluded that the non-removable option ismore rational and practical.
Buy fixed formwork for the foundation can be in the relevant outlets selling products of this type.
You can find it on the websites of specialized online stores, focusing on the amount of about 850-2500 rubles for individual elements of the construction and 69-450 rubles for parts of fasteners and accessories.
