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Building Materials

August 12, 2017 18:08

floor screed with expanded clay as a practical basis

screed with expanded clay: features

itself is a concrete block calcine clay at high temperatures.It is very lightweight and durable material, eco-friendly, with high levels of acoustic and thermal insulation.Screed with stronger ties of expanded clay sand and cement, easily breathable.It is extremely resistant to heat and frost, does not burn and does not rot.

Expanded clay floor, depending on the grinding fraction is divided into the following types: crushed stone, gravel and sand.Each faction has its own scope, and is characterized by various parameters, the main difference between them is the size of the grain.

floor Leveling expanded clay is beneficial in cases of sudden changes in its height base, where the use of expensive building materials economically impractical or impossible.

In construction practice there are cases when the floor filling with expanded clay, poured on the bottom of the base, is the only way to raise the cover to the desired level without exceeding the maximum permissible loads on the slab.

However, it should be borne in mind that the expanded clay consumption in the filler is determined not only by its thickness, but a fraction of the crushing of the expanded clay.With decreasing flow rate increases expanded clay fraction and, accordingly, it increases the load on the floor.

highly undesirable filling with expanded clay moist or wet floors, since it perfectly absorbs moisture and thus loses its beneficial properties.And now, after the general comments above, we turn to the question of how to make a tie with expanded clay with their hands.

Preliminary work - tools and marking

For those who want to understand clearly how to perform screed with expanded clay, videos provide detailed information.And for work, we need: sand, cement, concrete block, water.From tools: laser or water level.

With the level on the walls of all the rooms, where do screed, zero marks are put on the same level.By combining them with each other by a solid line, we get zero.The next step - the distance measured at several points from zero to the subfloor.The shortest distance corresponds to the highest point, and the largest - the lowest.

After that you can install pendulums.Begin to do it with the highest point on the pendulum setting reechnyh level on the thick solution.All pendulums are set at a distance equal to the length of the rail, by means of which the solution will be leveled.

Making screed with expanded clay with their hands

Now we can begin the tie.This is done in two layers.For the bottom layer of expanded clay is mixed with a solution, which he poured into a large container filled with water and mix.Then added a mixture of cement with sand, and again thoroughly mixed.

determine the exact proportion is quite difficult, but the result should get a homogeneous thick mixture, and expanded clay will turn gray and shiny.The resulting mixture was poured over the entire length flat band width of 70 cm, and leveled so as to to the floor along the whole length was 25 mm.

top of the first layer, while it is drying, is applied to the second, which is a solution of the sand and cement.Already unnecessary beacons are removed and the holes are sealed carefully.Then, in the same way up against the second strip is applied first lower layer, and on top of it - the second upper band.

alignment of the upper layer is made very carefully, is unacceptable pitting, bubbles, depressions, etc.The special rule can help to make the alignment more accurately and, most importantly, comfortable.After work will need to wait until all this construction will solidify and harden.