This national standard specifies the definition, technical requirement, test method, inspection rules, packaging, leaving factory, storage, kickback of admixtures used in cement concrete.
The standard is applied to evaluate the quality of concrete admixture such as water reducing admixture, super plasticizer, hardening accelerating and water reducing admixture, slow setting water reducing agent, air entraining and water reducing admixture, Hardening accelerating admixture, retarder, air-entraining agent, which are mixed into concrete.
