城市工业废料,堆置困难,既占用了不少土地,也影响到观瞻和环境卫生。处理这些废料往往增加很多费用。而这些废料,不少是有用之材,如何做到“废料不废”,具有重大的经济意义。在公路工程中,就地取用了工业废料,往往能达到降低工程费用,帮助工业部门处理废料的目的。1963年我们曾利用废石灰、煤渣和粘土拌合,修筑公路基层,完工后情况比较良好。另外,我们还利用废铁矿砂(炼铁厂筛 Urban industrial waste, stacking difficulties, both occupy a lot of land, but also affect the view and sanitation. Handling these wastes usually adds a lot of expense. And these wastes, many are useful materials, how to achieve “waste is not waste”, of great economic significance. In highway projects, the industrial use of wastes on site can often achieve the purpose of reducing construction costs and helping the industrial sector to dispose of waste materials. In 1963, we used waste lime, cinder and clay to mix and build the grassroots highway. After the completion, the situation was relatively good. In addition, we also use scrap iron ore (iron smelter sieve