MECHANICAL PROPERTIES AND PERMEABILITY OF PERVIOUS CONCRETE MADE WITH RECYCLED CONCRETE AGGREGATES

摘要

The mix proportion of the pervious concrete is designed based on that the ratio of water-cement is 0.3 and the ratio of sand is 10%. Then, the effect of different replacement level, aggregate gradation, superplasticizers, steel fiber, fly ash and silica fume on the recycled aggregate pervious concrete (RPC) are investigated. The results show that the compressive strength of RPC with coarse aggregates increases along with the replacement level of recycled coarse aggregates growth. When using the double graded aggregates and the replacement level of recycled coarse aggregates is 30%, the maximum of the RPC compressive strength was increased by 35.4% comparing with the natural pervious aggregate concrete.