Experimental Research on the Mechanical Properties of Steel Slag Recycled Aggregate Concrete

摘要

This article is aimed to discover the effect of replacement rate of slag recycled aggregate on the compressive strength of recycled concrete. The slag has been crushed and sieved to regenerate recycled aggregate, than replaced the different ratio of natural aggregate with recycled aggregate in premixed recycled concrete, carried out compressive strength test. The test results show that partially replace the natural aggregate with recycled aggregate regenerated from steel slag in concrete is feasible, and it can improve the early age compressive strength of recycled concrete. The appropriate replacement ratio of natural aggregate is about 20% consider the long-term strength. The research results have been applied in recycled concrete which used in foundation engineering, and it has been proved that it can bring good economic and environmental benefits.