1.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.

1.通过对几种缓凝剂与不同品净浆凝结间试验和缓凝剂在高温条件下的净浆凝结间试验发现缓凝剂是较理想的缓凝剂。