PROCESS FOR REPAIRING CONCRETE STRUCTURES USING PNEUMATICALLY SPRAYABLE CEMENT MORTAR COMPOSITIONS CONTAINING PORTLAND CEMENT, MINERAL AGREGATE, A STYRENE-BUTADIENE COPOLYMER LATEX AND WATER

摘要

ABSTRACT OF THE DISCLOSUREProcess for repairing concrete compositionsusing cement mortar compositions which are capable ofbeing pneumatically sprayed and which provide unexpectedlyenhanced bonding capabilities and resistance to slump;said compositions comprising essentially a substantiallynon-air entraining portland cement, mineral aggregate,a styrene-butadiene copolymer latex present on a solidsbasis in an amount of from about 5 to about 25 percentby weight of cement, and water in an amount sufficientto provide a total water to cement ratio of from 0.22to 0.26.17,980-F