20 Jul How to make waterproofing basements
Reliable waterproofing of basements depends on the quality of concrete. The quality is affected by the absence of voids and pores, the composition of the aggregate, the degree of concrete compaction, the content of cement. Good enough waterproof concrete can be obtained under the following conditions. The amount of gravel (crushed stone) is twice as much as sand (no more). We prepare sand with the following grain size: 3mm-50%. 0.25mm-25%; 1mm-25%; The maximum gravel size is 1/3 of the wall thickness of the cellar. Small fraction of gravel 2 times smaller. We take large gravels 5 times more than small. The composition of waterproof concrete: sand, gravel, cement – 1: 2: 1. We take water with the condition of good plasticity and firmness of concrete. Excess water forms voids and pores. It is advisable to masonry concrete without a break for the entire cellar.
To accelerate and more uniform hardening of concrete, it is covered with plastic wrap. If the hardness of concrete is insufficient, the waterproofing of the basements worsens. It is necessary to reduce the amount of water, in extreme cases, cement is added. In this case, the amount of sand decreases and the amount of gravel increases.
If it is necessary to obtain a greater degree of water resistance, the appropriate additives are introduced:
Slot additives: calcium nitrate, chlorine iron, silicate glue.
The best option is calcium nitrate 1% of the amount of cement.
Cerezite (oleic acid 8%, + lime 20%, + ammonias alcohol + aluminum sulfate 5%, + water).
bitumen emulsions (bitumen 60%, + LST plasticizer 5%, + water.)
Special clay – concrete.
Hydrophobizing additives – sodium eleat, abeta sodium.
To increase the waterproofing of the basements, the concrete is grouted immediately after laying. Grouting plaster is prepared in the ratio: sifted sand – 3 parts, cement – 0.5 parts, lime milk – 1 part. Ironal can be carried out. Dry cement is sifted to the surface of concrete and, after getting wet, is smoothed out, to obtain a smooth surface. Good waterproofing of basements is achieved subject to manufacturing technology.
Чтобы избежать появления конденсата, поддерживать влажность и температуру на нормальном уровне рекомендуется использовать системы кондиционирования и вентиляции. Подробнее о кондиционировании помещений – читаем на сайт.