4.1 test items
Water reduction rate, bleeding rate ratio, gas content, difference in setting time, compressive strength ratio, shrinkage ratio, effect on steel corrosion and homogenization (total base, sodium sulfate, chloride ion, PH value, solids content, etc.).
4.2 test basis
GB8076 "commercial concrete admixture", GB8077 "test method for homogenization of commercial concrete admixture", GB50119 "technical specification for application of commercial concrete admixture", JG/T223 "polycarboxylic acid series high-performance water reducer", etc.
