美国科学家在混凝土小型砌块生产中利用粉煤灰的研究表明:①如果养护温度高于约72℃,则在混合物内使用粉煤灰将明显提高砌块的早期刚度或砌块在运输中的抗裂性。②在砌块厂内进行的探索性试验结果表明:在确定能用于该厂的最佳粉煤灰掺量之前,必须进行试验。采用低压蒸汽养护,粉煤 US scientists used fly ash in the production of small concrete blocks and showed that: 1 If the curing temperature is higher than about 72 °C, the use of fly ash in the mixture will significantly increase the early stiffness of the block or block in transit Crack resistance. 2 The results of exploratory tests carried out in the block plant show that the test must be carried out before determining the optimum amount of fly ash that can be used in the plant. Low pressure steam curing, pulverized coal