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研究了花岗岩石粉取代粉煤灰对再生混凝土工作性和强度的影响。结果表明:随花岗岩石粉取代量的增加,再生混凝土的工作性越来越好;掺入花岗岩石粉,对再生混凝土早期强度影响较小,后期强度影响较大;复合矿物掺合料所选用的Ⅱ级粉煤灰和花岗岩石粉的比例宜为3∶7。
The effect of granite powder instead of fly ash on the workability and strength of recycled concrete was studied. The results show that the workability of recycled concrete is getting better with the substitution amount of granite powder. The incorporation of granite powder has little effect on the early strength of recycled concrete and has a great influence on the strength at later stage. The ratio of fly ash and granite powder should be 3: 7.