采用再生粗骨料配制强度在50MPa或更大的高强再生骨料混凝土，并对其变形能力和耐久性进行测定，为高强再生骨料混凝土在工程上的应用提供理论和实验基础。通过一系列的抗压实验确定再生粗骨料的强度极限，并通过对水灰比的调整，使配制的高强再生骨料混凝土在强度上达到设计值，并以再生粗骨料取代率为0、30%、50%、80%和100%的高强再生骨料混凝土为研究对象进行实验。当再生粗骨料取代率为30%时，对再生混凝土的强度影响不大；之后混凝土强度随再生骨料的增加而降低。高强再生骨料混凝土与天然混凝土在耐久性上具有相似的性能，可以将高强再生混凝土应用于工程中。
Using recycled coarse aggregate strength in 50MPa or greater strength of recycled aggregate concrete, mensurate the deformation capacity and durability to provide theoretical and experimental basis for application of the high strength recycled aggregate concrete in engineering.Determine the ultimate strength of recycled coarse aggregate through a series of compression test.By adj usting the water cement ratio,make the high-strength recycled aggregate concrete on strength to reach the design strength and have experiment on high-strength recycled aggregate concrete with recycled coarse aggregate replacement rate 0,30%,50%,80% and 100%.When the replacement ratio of recycled coarse aggregate was 30%,it has little effect on the strength of recycled concrete.Then the strength of concrete was reducing as the recycled aggregate was increasing.High-strength recycled aggregate concrete and natural concrete have similar performance in durability.Therefore high-strength recycled aggregate concrete can be applied to engineering.
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