ANTICORROSIVE COARSE-DEFECT FILLING Russian patent published in 2002 - IPC

FIELD: manufacture of building materials. SUBSTANCE: filling designed for leveling defects and waterproofing of sized or non-sized surfaces consists of filler (80-90%), in particular polydisperse zinc powder and ethyl silicate binder: ethyl silicate, polyvinyl butyral, 73% orthophosphoric acid, ethanol, and water. Polydisperse zinc powder is composed of following fractions: below 63 mcm, at least 50.0%; 63-160 mcm, up to 40.0%; above 160 mcm, up to 10.0%. EFFECT: improved adhesion and strength properties, increased resistance to cracking, and minimized shrinkage at proper proportions of components. 1 tbl, 7 ex