Hardenable material for use when producing prefabricated elements, structural units and preformed materials of the concrete type, and a process for producing building materials

摘要

PCT No. PCT/AU86/00063 Sec. 371 Date Nov. 12, 1986 Sec. 102(e) Date Nov. 12, 1986 PCT Filed Mar. 12, 1986 PCT Pub. No. WO86/05478 PCT Pub. Date Sep. 25, 1986.A cementitious composition is produced from a curable mixture of particulate or comminuted silica, an alkali metal silicate, and an alkyl silicate. The preferred composition includes 80 to 95 weight percent silica, 5 to 20 weight percent sodium or potassium silicate, 5 to 15 weight percent, based on the total weight of silica and sodium or potassium silicate, of ethyl silcate and optionally an ester catalyst which is an ester of a long chain organic carboxylic acid.