How to insulate the floor with expanded clay

Keramzit – translated from Greek – clay. This is a well -common artificial type of cell aggregate for concrete. It is also used for soundproofing and heat -insulating rafting in the construction of various structures. Ceramzit is produced, burning clay breeds consisting of minerals such as Montmorillonite, Cauline, Hydroslud, Palygorskite. When processing, heating in the spinning furnaces of such swollen, and slightly swollen fusive rocks, with additives in the form of peat, solar oil, sulfate-spire bard, sawdust-they receive artificially manufactured expanded clay.

The structure of expanded clay grain has the form of vitreous porous mass. Ceramzita pores have a closed spherical shape, with a thin, pierced shell. The stooped mass is crushed, as a result of which it turns out: expanded clay sand up to 0.5 cm in size, expanded clay gravel 0.5-4 cm and larger pieces – expanded clay gravel.

The popularity of the use of expanded clay lies in the complex of its properties: floor insulation and sound insulation. Its frost resistance is at least 15 cycles, and water absorption is up to 10-25%. Check the quality of work performed and prevent troubles to eliminate marriage, compliance with some rules will help.

When conducting insulation and soundproofing of the floor and other floor ceilings, remember that on these areas there is more load than on the walls. Therefore, it is necessary to take into account and calculate the thickness of the layer of expanded clay coating and cement screed, providing for the upcoming load on the floor. On the floor and other floors, before filling the expanded clay layer, it is necessary to put vapor barrier and waterproofing materials. Polyethylene film is also suitable. Her joints must be connected with tape. The canvas of the insulating material is laid out so that its edges go to the walls, to the level of the thickness of the future expanded clay layer.

To avoid the subsidence of expanded clay coating, it must be tightly laid. To do this, use expanded clay gravel of different fractions, from 0.5 to 2 cm in size. When mixing expanded clay fractions, there will be a denser shrinkage, fewer voids. Alignment of expense expense expense, is ensured by the preliminary installation of the beacons, since they are installed when aligned with cement-sand mixtures. The first beacon is installed at some distance from the wall, the subsequent beacons are installed parallel to each other. After installing the beacons, they are fixed with a solution of gypsum or alabaster. Such a mixture is applied to the beacon with a slide, aligned in the level of the alleged floor. After the mixtures harden, you can begin to fill up expanded clay material. Checked, compacted and leveled the total area of ​​the backfill, then covered with a cement screed.

The thickness of the cement screed should be at least 2 cm. A very liquid solution or cement “milk” is made, and expanded clay coating is poured.

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