我国许多城市所在地砂子奇缺,而其附近工矿区却有很大数量的尾矿粉被当作废料未加利用。近年来我们在砌筑砂浆中采用尾矿粉部分取代了水泥砂浆中的砂子及混合砂浆中的砂子和石灰。试验和现场试点表明,这种替代办法是可行的。砂浆性能不仅能满足规范要求,而且节约效果显著,每立方米砂浆降低成本16～29％。一、试验情况本试验目的是用尾矿粉全部或部分代替水泥砂浆中的砂子及混合砂浆中的砂子和石 There are scarce sands in many cities in China, and there are a large number of tailings in the nearby industrial and mining areas that have not been used as waste. In recent years, we used tailings in masonry mortar to partially replace the sand in cement mortar and sand and lime in the mixed mortar. Trials and field trials indicate that this alternative is feasible. The mortar performance not only meets the specification requirements, but also has a significant saving effect. The cost per cubic meter of mortar reduces the cost by 16-29%. First, the test situation The purpose of this test is to use the tailings powder in whole or in part to replace the sand and stone in the cement mortar and the sand and stone in the mixed mortar.