【摘要】 本文对C55、C65混凝土按等量取代法进行配合比设计,粉煤灰掺量为30%、40%,用FJl型复合激发剂和减水剂进行试验,分析3d～60d抗压强度、抗折强度及折压比的发展、变化规律,探讨激发剂和减水剂的作用机理。更多还原

【Abstract】 In this paper,the mixing proportion design of the C55 and C65 concrete in which thirty percent and forty percent of cement being replaced equally by fly ash was carried out respectively.In the experiment,the composites of FJ1-activator and the water reduction admixture were used.According to the result of the experiment,we analyzed the development of the compressive strength,the ending strength and the ratio of bending strength to compressive strength of concrete from three days age to sixty days age,and explored the mechamisms of activator and water reduction admixture in concrete.更多还原