Sand should be clean and conform to the requirements of ASTM C 33 for concrete sand.
Modifier A is a styrene butadiene polymeric emulsion.
Stabilizers and an antifoam agent have been added at the point of manufacture. Emulsion should weigh approximately 8.5-lb per gallon. Food grade Citric Acid should be dissolved into a solution with water. Solution should be added to the admixture tank, not containing latex emulsion, and dispensed as an admixture. Calibration of mobile mixers should be checked every 100 yards for proper proportioning.