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该文阐述了从不同来源获得的粉煤灰对混凝土凝固和硬化影响的调查结果.不掺入粉煤灰的混凝土平均需28天达到设计强度:35 MPa.水泥被粉煤灰替代从0到100%,使用的粉灰与被替代的水泥的比率保持在1.25.总的来说,混凝土的初凝和终凝时间很大程度取决于粉煤灰的来源和粉煤灰的用量.混凝土的凝固时间得到延长,直到水泥被粉煤灰替代的比例达到一个确定的标准,大约为60%,超过这个标准,混凝土将加速凝固.
This paper describes the results of the investigation of the influence of fly ash obtained from different sources on the solidification and hardening of concrete. The concrete that does not incorporate fly ash needs an average of 28 days to reach design strength: 35 MPa. Cement is replaced by fly ash from 0 to At 100%, the ratio of used fly ash to cement replaced is maintained at 1.25. Overall, the initial setting and final setting time of the concrete depends largely on the source of fly ash and the amount of fly ash. The solidification time is extended until the proportion of cement replaced by fly ash reaches a certain standard, approximately 60%, beyond which the concrete will accelerate solidification.