Underground waterproof engineering waterproof material choose and buy skills

Underground engineering in fuzhou the choice of waterproof materials should fully consider the terrain and physiognomy, hydrogeology, engineering geology, seismic intensity, frozen depth, environmental conditions, structure and other factors. According to the leakage of palisade structure allows water to determine the degree of security solution and the choice of waterproof materials by petroleum asphalt paper tire roofing waterproof layer shall be strictly forbidden. According to waterproof zhengde years experience summed up the underground waterproof project in the following three categories: ( 1) With no seepage of artesian water conditions or emergency drainage, drainage system should be set up mechanical: (1) in saturated soil or rock in underground engineering, can adopt compensation shrinkage concrete structure since the waterproof; Or set additional waterproof layer, grouting waterproof measures; (2) in the unsaturated or rock in underground engineering, can use waterproof solidified soil structure since the waterproof, compensation shrinkage concrete structure since the waterproof reinforced concrete structure and masonry structure waterproof; Or set additional waterproof layer, grouting or other waterproof measures. ( 2) In the artesian condition of underground engineering, artesian water drainage system should be set up, can use the waterproof, waterproof concrete structure compensation shrinkage concrete structure since the waterproof, ordinary concrete structure, masonry structure or waterproof support by rockbolt and shotcrete; Or use additional waterproof layer, bushing, grouting, etc. ( 3) In corrosion medium of underground engineering, resistance to erosion of waterproof mortar concrete should be adopted, such as waterproof coiled material or coating materials to do the waterproof layer; For the power equipment or power generation equipment vibration effect of underground engineering, synthetic polymer waterproofing materials, coating should be adopted with good extensibility and flexibility of waterproof material; For construction in the permafrost, adopt the waterproof concrete structure, the concrete freezing-thawing resisting cycle shall not be less than 100 times.