【摘要】 测试了不同石粉含量对机制砂混凝土拌合物泌水率的影响。结果表明:机制砂与河砂泌水率随静置时间成对数关系变化;随石粉含量增加(水粉比降低),机制砂混凝土泌水率降低,泌水潜伏时间延长,泌水中沉淀物减少。更多还原

【Abstract】 It was investigated that the effects of the different content micro-fines on the bleeding rate in manufactured-sand fresh concrete.The result shows that the bleeding rate of manufactured-sand and river-sand changes in logarithm relation with stewing time;With the increasing of micro-fines content(water micro-fines ratio reduces),The bleeding rate of manufactured-sand concrete reduces,the bleeding latent time expands,and the precipitate reduces in bleeding.更多还原