The workability, mechanical properties and volume stability of the self-compacting concrete, which the fly ash and mineral powder as admixture, mixed in different proportion(respectively by 4∶0,3∶1,2∶2,1∶3,0∶4), has been test, the experiment show that the increase ratio of fly ash can increase the flow of the mixture performance, filling performance, reduced the dry shrinkage of concrete performance, the increase of the mineral powder proportion, improve the cohesive force of mixture, reduces the working performance of concrete, fly ash and mineral powder is beneficial to exert the double mixing composite effect.%研究了以粉煤灰、矿粉为掺合料,二者分别以4∶0,3∶1,2∶2,1∶3和0∶4比例复掺自密实混凝土的工作性能、力学性能及体积稳定性能,结果表明,提高粉煤灰比例能增加拌合物的流动性能、填充性能,减小了混凝土干缩性能,矿粉比例的增加提高拌合物的粘聚力,降低了混凝土工作性能,粉煤灰、矿粉复掺有利于发挥二者的复合效应。
展开▼
