Gypsum Retarder: The Ultimate Guide by LANDU NOVASTAR

LANDU NOVASTAR Gypsum Retarder reduces the early hydration rate of gypsum, delaying the setting time by inhibiting the dissolution of hemihydrate gypsum and the crystallization of gypsum dihydrate. Importantly, it does not compromise the strength of your gypsum products.

Add the appropriate amount of LANDU NOVASTAR gypsum retarder directly to the water and stir until uniform. Contact us for a dedicated formulation tailored to your local environment.

Yes, gypsum retarders can be used with accelerators, water reducers, air entrainers, bonding agents, and fibers. LANDU NOVASTAR can test combinations in small batches and provide a final report to guide your decisions.

Amino-based retarders, like LANDU NOVASTAR’s, prolong the setting time with minimal impact on mechanical strength, unlike traditional retarders that may compromise crystal morphology and final product density. According to research from the International Gypsum Research Institute, amino-based retarders offer superior performance.