what are the main components of concrete retarder, and what are their main functions?
there are many kinds of retarder, including sugar, lignosulfonate, hydroxy acid, inorganic salt and so on. set retarder is an additive that reduces the hydration rate and heat of hydration of cement or gypsum and prolongs the setting time. retarders are classified according to structure:1. sugars: calcium sugar, glucose acid salts, etc.2. citric acid, tartaric…
what are the main components of concrete retarder?
the types of cement retarder can be divided into two categories: inorganic retarder and organic retarder according to their chemical composition. from the perspective of molecular weight or synthesis method, they can be divided into two major categories: organic compounds and polymers. the most studied organic compounds are mainly organic phosphonic acids (salts). the polymers…
