SUBSTRATE CONCRETE SURFACE HIGH-PRESSURE ADJUSTMENT METHOD, AND SUBSTRATE CONCRETE FLOOR CONSTRUCTION METHOD APPLYING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a substrate concrete surface high-pressure adjustment method for enabling the construction of a floor coating material without polluting a construction site with dust by removing laitance and fragile portions from the surface of a substrate concrete in a wetting condition, and to provide a substrate concrete floor construction method applying the same.;SOLUTION: The substrate concrete surface high-pressure adjustment method includes washing the surface of the substrate concrete with high pressure water of 1-10 Mpa, and applying a water-based epoxy resin mortar composition of 0.5-2.7 kg/m², containing hydraulic cement, aggregate and a water-based epoxy resin, onto the substrate concrete having no floating water, the water-based epoxy resin mortar composition being a coating material composition in which the weight ratio of the hydraulic cement to water is 0.3-0.4, the weight of a resin solid component of the resin is 4-10% of the weight of all compound containing the water when the resin is formed by adding hardening agent to react with the epoxy resin to the epoxy resin, the total pore amount of a hardened material is 0.05-0.2 cc/g, and a T.I value is 1.0-1.5. The substrate concrete floor construction method applying the same is provided.;COPYRIGHT: (C)2014,JPO&INPIT