本文对混合砂混凝土的工作性、力学性能、耐久性进行了详细的讨论,实验及实践表明:混合砂能完全替代日益缺少的中砂,配制满足工程要求的混凝土。大量的桥梁工程实践表明,混合砂混凝土的技术性能良好,可节约工程成本、保护环境,对解决日益缺少的天然砂资源问题具有重要意义。 In this paper, the workability, mechanical properties and durability of concrete mixed with sand are discussed in detail. Experiments and practices show that the mixed sand can completely replace the increasingly lacking sand and prepare the concrete which meets the engineering requirements. A lot of bridge engineering practice shows that the technical performance of mixed sand concrete is good, which can save engineering cost and protect the environment, which is of great significance to solve the problem of natural sand resources which are increasingly scarce.