What are the main points of waterproof construction of SBS coils for bridge construction?

China Coatings Online News Information: What are
construction points of SBS coil waterproof construction for bridge construction?
grass-roots with 1:2.5 cement mortar to find flat, cement using ordinary silicate cement, mortar surface flat pressure light, slope in line with design requirements, not allowed to sand, bumps and uneven defects, local water accumulation. Cement mortar is found and laid in a timely manner after laying. The female corner or corner connected to the protruding object at the base is smeared into a smooth arc with a radius of 150mm and no puddles at the drainage area. The grass roots must be dry, the water content control is not less than 9% is appropriate (water content of the test using dry linoleum, 24 hours overnight inspection without watermark method). Remove the grass-roots debris before laying the waterproof layer.
surface cement mortar to find a flat layer lien slit 20×20mm, the gap seam spacing of about 6m, the split seam is set in the axis and roof ridge slope. The exhaust hole is set up at the intersection of the split seams, and a galvanized steel pipe of 50 is used. The drop-off point is 20mm.2mm lower than the surrounding
The above content is based on the students in the actual work encountered problems organized for reference, if there are problems please timely communication, correct.
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