WATER-PROOFING WORK

摘要

PURPOSE:To perform a water-proofing work with asphalt exhibiting excellent swell-preventing effect without causing environmental pollution, by forming an undercoating layer produced by compounding hydraulic cement powder to an aqueous rubber-asphalt emulsion between a substrate and a water-proofing layer. CONSTITUTION:A water-proofing work is carried out by forming an undercoating layer nontoxic to human body and produced by compounding (A) 100pts.wt. (solid basis) of an emulsion of asphalt and a water-based rubber composed mainly of preferably a (carboxyl-modified) styrene-butadiene copolymer and (B) preferably 30-200pts.wt. of a hydraulic cement between a substrate such as concrete and a water-proofing layer.