72419190
Mar 23, 1972
Dec 11, 1973
LIQUID CEMENT-ADDITIVE MATERIALS FOR IMPROVING THE PROPERTIES OF CEMENT, CONCRETE AND MOTAR MIXES, INCLUDING INCREASING WORKABILITY AND CONTROL OF THE RATE OF HARDENING, REDUCING WATER REQUIREMENTS, INCREASING STRENGTH AND DURABILITY AND REDUCING SHRINKAGE AND PERMEABILITY OF HARDENED PRODUCT
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