Super-retarding mortar is composed of cement, water, retarding admix and sand blended in appropriate rate .

超缓凝砂是由水、缓凝剂、水和砂经适当配比而形成。

The muscovado retarder is more retarder through the setting time experiments of several retarder applied the different brand cement and muscovado applied under the hot conditions.

通过对几种缓凝剂与不同品牌水凝结时间试验和赤砂糖缓凝剂在高温条件下水凝结时间试验发现赤砂糖缓凝剂是较理想缓凝剂。