本文通过对建筑垃圾再生砂粉的基本性能,胶砂流动度和胶砂强度等性能的试验研究,得出结论:建筑垃圾再生砂粉有一定的活性,其各项性能指标满足II级粉煤灰要求,因此可作为混凝土矿物掺合料使用,替代水泥配制混凝土。由试验结果来看,再生砂粉的掺量应控制在20%以下,才能保证各种性能不受影响,如超过20%,其性能随掺量的增加急剧下降,进而可能影响到混凝土的性能,因此再生砂粉的掺量要控制在一定范围内使用,才能发挥良好的活性特征。 In this paper, the basic performance of building waste recycled sand, mortar fluidity and mortar strength and other properties of the experimental study concluded that: recycled construction waste sand powder has some activity, and its performance indicators meet Grade II pulverized coal Ash requirements, it can be used as a concrete mineral admixture, instead of cement preparation of concrete. From the test results, the content of recycled sand powder should be controlled below 20%, in order to ensure that various properties are not affected, such as more than 20%, its performance decreases sharply with increasing dosage, which may affect the performance of concrete , So the amount of recycled sand powder to be controlled within a certain range of use, in order to play a good active characteristics.