About AYANO TOSHIKI
About 月刊防水ジャーナル
About silicate
About concrete
About crack
About calcium hydroxide
About permeability test
About repair
About water repellency
About water proof
About jointing of successive pours
About painting and coating
About reactivity
About impregnating agent
About impregnation
About surface impregnant
About Various paints
About Construction materials as seen from use,function and construction
About 含浸材
About けい酸塩
About 表面含浸材
About 現状
About 解決策