摘   要：通过正交试验研究了生产砌块用再生混凝土的热工性能，利用极差分析影响再生混凝土导热系数的因素，找出了再生混凝土热工性能各因素的影响规律，并结合再生混凝土砌块强度要求，优化了组合各因素水平取值，给出了再生混凝土砌块具有较好热工性能及较高抗压强度的配合比。在此基础上，进行了再生混凝土砌块墙体的传热系数性能试验研究，结果表明，再生混凝土砌块墙体与普通墙体相比具有良好的热工性能。

Abstract: The thermal performance of recycled concrete block is studied by orthogonal experimental and the main influence factors on thermal conductivity of recycled concrete is analyzed using range analysis in order to find the influence law of the factors on thermal performance of recycled concrete. The values of various factors are optimized based on the strengths of recycled concrete block, the optimum mix proportion of recycled concrete block with great thermal performance and relatively high compressive strength is obtained. On this basis, heat transfer performance of recycled concrete block wall is tested. The results show that the thermal performance of recycled concrete block wall is better than that of ordinary wall.