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"Concrete surface roughening" refers to a treatment method for concrete surfaces using high-pressure water washing, aimed at removing contaminants and weak layers from the substrate concrete of ceramic tiles or mortar coatings, and creating effective roughness for adhesion. The high-pressure water washing roughening method is performed before applying mortar or tiles (in the case of direct bonding) to enhance the adhesion reliability between concrete and mortar by creating effective roughness for adhesion and removing dirt and weak layers. [Features] - Supervised by the Ministry of Land, Infrastructure, Transport and Tourism, Bureau of Construction [FY 2001 version of Common Specifications for Construction Work] Corresponds to Tile Work 11.3.3 (a) (ii) and 15.2.4 (c) - Adopted in the "10-Year Defect Warranty System for Tile Exterior Wall Construction" for "Substrate Treatment" For more details, please contact us.