采用传统替代法和等体积砂浆法( EMV法)两种方法配制再生混凝土，对再生混凝土与对比普通混凝土的力学性能和收缩性能进行试验研究。结果表明，再生混凝土立方体抗压强度的变化规律与普通混凝土基本一致，传统替代法配制的再生混凝土各龄期强度均较低，采用EMV法配制的再生混凝土28 d后强度增长较明显；再生混凝土的收缩随时间的增加而增加，与对比普通混凝土相比，传统等体积替代法配制的再生混凝土其280 d收缩率提高4.7%，而等体积砂浆法配制的再生混凝土的280 d收缩率较对比普通混凝土低10.2%。
Mechanical property and shrinkage performance of recycled concrete compared with the natural concrete, which were made by conventional aggregate replacement method and equivalent volume mortar method. The results show that the change rule of the compressive strength of recycled concrete cube is basically the same as the ordinary concrete. The strength of different age of recycled concrete prepared by the conventional aggregate replacement method is lower than that of the other kinds of concrete. In the later period, the cubic compressive strength of recycled concrete made with the equivalent volume mortar method is increased obviously;the shrinkage of recycled concrete is increased along with the age of concrete. The 280 d shrinkage rate of recycled concrete prepared by the conventional aggregate replacement method is increased by 4 . 7%, while the shrinkage rate of recycled concrete prepared by equivalent volume mortar method is 10. 2% lower than that of ordinary concrete in 280 d.
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