Experimental study on the compressive strength of recycled aggregate concrete in cold areas

The relationships among recycled aggregate concrete's compressive strength,the water/cement ratio,replacement ratio of recycle daggregate and age were studied.The results indicated that the development for the compressive strength of recycled aggre-gate concrete is the same as that of normal concrete.The recycled coarse aggregate replacement ratio has a remarkable influence on the compressive strength of recycled aggregate concrete.The relationships between the compressive strength and the water/cement ratio are also different in different situations.Finally,based on thetest results,some useful conclusions are obtained,which can be provided as a reference for the design of recycled concrete mixture ratio.