1. What are the waterproof building materials?
1, waterproof building material asphalt material. The main raw materials of asphalt are natural asphalt, petroleum asphalt, coal asphalt and other materials, and many waterproof materials are made, including linoleum products, paper tire linoleum products, solvent-based products, water emulsion asphalt and other waterproof products, which have very good water resistance and durability.
2. As a waterproof building material, polyethylene-polypropylene material is a coiled material made by adding adhesives such as antioxidant and stabilizer to linear low-density polyethylene resin and adopting hot melt direct compression composite technology. It has good comprehensive technical properties such as strong impermeability, high tensile strength, good low-temperature flexibility, small linear expansion coefficient, good stability, non-toxicity, strong deformation adaptability, wide temperature range and long service life.
3. Rubber and plastic materials for waterproof building materials. Using chloroprene rubber, butyl rubber, ethylene propylene diene monomer, polyvinyl chloride, polyisobutylene and polyurethane as raw materials, elastic tire-free waterproof coiled material, waterproof film, waterproof coating, ointment, putty, water stop and other coatings and sealing materials can be made. It has the characteristics of high tensile strength, high elasticity and elongation, good adhesion, good water resistance and weather resistance, can be used cold and has a long service life.
4. The waterproof building material is cement. Admixtures, such as waterproofing agent, air entraining agent and expansion agent, can accelerate the setting and compaction of cement and enhance the hydrophobicity and impermeability of cement mortar and concrete; Accelerated setting mortar based on cement and sodium silicate can be used for plugging and waterproofing in underground engineering.
5. Metal materials for building waterproof building materials. Thin steel sheet, galvanized steel sheet, profiled steel sheet and coated steel sheet can be directly used as roofing waterproof sheets. Steel plate is used as metal waterproof layer of basement or underground structure. Thin copper plate, thin aluminum plate and stainless steel plate can be made into water stop for deformation joints of buildings. Joints of metal waterproof layer shall be welded and painted with antirust protective paint.
Second, the building waterproof construction method
1. Construction tools: gasoline blowtorch (3.5L), pulley, brush, press, scissors, tape measure, broom, etc.
2. Grass-roots treatment: the grass-roots layer is a cement mortar leveling layer, which must be solid and flat, and there can be no looseness, bulging, uneven surface and roughness, otherwise it must be treated.
3. The base must be dry, and the moisture content should be within 9%. During the test, the coiled material is laid on the surface of the base, and after 3-5 hours, if there is basically no water drop on the lower surface, the construction can be started.
4. Before construction, carefully clean up the cement mortar residue, dust and sundries left on the surface of the base, and then coat the bottom oil, which requires uniform coating and drying for more than 8 hours at a time (depending on the temperature, it is advisable not to stick feet). Generally, the dosage per square meter is 0.2-.
5. Treatment of complex parts: the corner of yin and yang is made into a figure of eight, and the corner parts such as parapet, pipe root, chimney, exhaust hole, downpipe and expansion joint are made into additional layers. , generally 30cm wide, overlapping 6-8cm.
6. Coil paving: Before paving the coil, measure the waterproof area to be constructed, and then use the material reasonably according to the size of the material, starting from the lower part. First, put the coil in the correct position, with the long side of 8cm and the short side of 10cm. Then ignite the blowtorch, aim at the bottom of the coil and the base surface, and heat evenly (the blowtorch nozzle is about 30cm away from the coil surface). Immediately after the surface of the coil melts, roll the coil forward and compact and flatten the coil. The summer-planting part should be extruded with molten asphalt. Don't get involved in air and foreign matter when rolling to prevent deflection, bulging and wrinkling. Then seal the joint evenly and carefully with a blowtorch and a press to prevent the edge from warping.
Roofing waterproof construction costs should be determined according to the specific situation. If you choose a decoration with poor waterproof, the price will naturally be cheaper. However, the waterproof performance will not be guaranteed, and there is a great possibility of water leakage, which will make the bedroom in the later bedroom very unbearable. Therefore, everyone should try to buy materials with better waterproof performance.