Basement floor practice?

All construction surfaces to be treated must be cleaned first to ensure that there is no dust, dirt, organic resins, paints and other pollutants that affect the deep attachment of the product. New concrete can be used after demolding; surface diameter greater than 0.2mm cracks, holes in the application of cement to repair good; construction should be fully shaken before the use of low-pressure spraying method of construction, so that the substrate to reach about 1 minute of wet saturation can be.

Two times construction, each construction interval of 1 hour is appropriate, the theoretical coverage of 4m/liter, the actual coverage will vary depending on the construction method, construction environment, the roughness of the base surface; 1-2 hours after construction is the process of gel generation, frequent stepping should be avoided, 24 hours (or the surface is dry) can be passed; construction of 4-7 days can be painted, finishing and other sub-items. Operation.

Expanded Information

The top slab of the basement is made of cast-in-place or prefabricated concrete floor slab, and the thickness of the slab is calculated according to the load used in the first floor, while the air defense basement should be calculated according to the load of the corresponding protection level. When the water table is higher than the basement floor, the basement floor slab not only bears the vertical load acting on it, but also bears the buoyancy of the groundwater, so it must have sufficient strength, stiffness, resistance to infiltration and resistance to buoyancy.

The basement wall not only bears the upper vertical load, but also bear the soil, groundwater and soil freezing side pressure, so the thickness of the basement wall should be determined by calculation. Doors and windows of the basement are the same as the above ground part. When the sill of the basement is lower than the outdoor ground, in order to ensure lighting and ventilation, there should be a light well.

Lighting wells are composed of side walls, baseboards, rain-shading facilities or grates, generally one for each window, and when the windows are close together, the lighting wells can also be connected together.

Baidu Encyclopedia - Basement

Baidu Encyclopedia - Basement Damp-proof Layer