| 摘要 |
PROBLEM TO BE SOLVED: To provide a water absorption inhibitor causing no fluid dripping when applied to the substrate vertical surface of a civil engineering and construction substrate, having excellent permeability, excellent in surface water repellency, and easy in removal of residues on the surface of a substrate after dried. SOLUTION: A water absorption inhibitor composition for civil engineering and construction, which comprises (A) 100 pts.wt. alkylalkoxysilane and/or condensate thereof and (B) 0.5-25 pts.wt. silica wherein (A) is represented by the general formula R<SP>1</SP><SB>X</SB>Si(OR<SP>2</SP>)<SB>4-X</SB>(R<SP>1</SP>is a 1-20C alkyl group; R<SP>2</SP>is a 1-6C alkyl group or H; and X is an integer of 1 or 2), is provided. COPYRIGHT: (C)2009,JPO&INPIT
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