Method for modifying the surface of a hardened cement composition for improving the adhesion of a resin coating material, a method for forming a resin coating layer on the surface, and a surface modifier for use in these methods

摘要

A method for improving the adhesiveness between hardened cement compositions and resin coating materials by spraying an aqueous solution containing organic acid(s) which will react with the surface to produce calcium compounds on the hardened cement surface before a resin coating material is applied, thus removing the carbonate membrane of hydrated cement compositions. This improves the adhesiveness between the hardened cement compositions and the resin coating material.