Some common sense about polymer waterproof mortar

Polymer waterproof mortar is a waterproof material based on water-based polymer powder or latex, ordinary Portland cement, and special aggregates as the main ingredients, and added with a variety of modifying additives. Its excellent impermeability makes it suitable for thin-layer plastering construction, and it shows a certain degree of flexibility and excellent bonding and anti-cracking properties. Due to the use of water-based polymer latex as the modified component, the product is pollution-free and does not contain organic solvents.

You should know the following common sense:

Product Features:

Has good bonding and flexibility properties.

It can be constructed directly on wet base surfaces and is easy to operate.

Resistant to corrosion, low temperature, high temperature and aging.

It will not deteriorate, has no volatile matter, is non-toxic, and is environmentally friendly.

It can construct various decorative surface layers on the waterproof layer.

Construction technology:

The base layer should be smooth, solid, clean, without floating dust, looseness or depressions. If there are oil stains, holes and other problems, they need to be cleaned and repaired. Before underground waterproofing projects, it is necessary to check whether there are leakage points and seal them if necessary.

Before construction, the base surface should be fully moistened, and construction can be carried out after there is no accumulation of water.

The material ratio is the weight ratio: powder material: liquid material = [Type I] 4:1, [Type II] 2:1. The amount of mixing should not be too much each time, and the mixing should be carried out according to the plastering speed. Use the mixed mortar within 1 hour. Increase or decrease the amount of lotion appropriately according to environmental factors.

Detailed structures such as pipe roots, floor drain openings, and structural corners should be enhanced. The base layer around the pipe root should be carved with a groove about 1 cm wide and deep, filled with polymer cement waterproof mortar, pressed into a layer of mesh cloth, and then plastered with polymer cement waterproof mortar.

During construction, the plastering thickness of the polymer cement waterproof mortar should be uniform and no uneven thickness should occur. Each layer of plastering should be closely adhered and constructed continuously; if stubble is required, use stepped slope stubble, but it must be 200 mm away from the yin and yang corners; when joining, operate in layered order to ensure tight overlap, and the overlap width is not less than 100 mm.

The total thickness of plastering should be determined according to the waterproof level: 4 to 6 mm for above-ground projects; ≥ 6.0 mm for underground projects. The polymer composite cement waterproof mortar is plastered two to three times, with the thickness of each layer being 2 to 3 mm. After each plastering is completed, allow it to dry to form a film (not less than 5 hours) before proceeding with the next layer of plastering. The surface of the last layer of plaster should be compacted and smoothed. Mortar consumption per square meter is approximately 2.0 kg/mm.

During construction, the directions of the front and rear courses should be cross-cut to avoid missing brushes.

After the polymer cement waterproof mortar is set, it needs to be naturally cured, and the curing temperature must not be lower than 5 degrees Celsius.