The percentages of recycled aggregate are 0,30%,50%,70% and 100%. The same slump of each concrete was obtained by adjusting the quantity of water.

• 试验中再生粗骨料的掺入量分别为0,30%25,50%25,70%25和100%25,通过调节用水量使各组混凝土达到相同的坍落度。