【摘要】 系统地探讨了在低水胶比和大流动性（或免振）条件下以超细磨粉煤灰（ＵＰＦＡ，ｕｌｔｒａ－ｐｕｌｖｅｒｉｚｅｄｆｌｙａｓｈ）为主的活性掺合料对胶砂流动度和强度及混凝土坍落度和强度的作用效应，为配制免振高强高性能混凝土奠定了基础。更多还原

【Abstract】 The effect of the active powders relied on UPFA(ultrapulverized fly ash) on the flowability and strength of cement mortar and the slump and strength of concrete was investigated systematicly under the condition of the low waterbinder ratio and high flowability.The study is essential for formulating the freevibration high performance concrete.更多还原