为了综合利用黄河淤积泥沙,分析了泥沙粒度、矿物和化学组成、重金属溶出浓度.通过对黄河下游泥沙进行水热固化,初步探讨了添加物对固化样品强度的影响以及其硬化机理.结果表明,黄河上、中、下游以及表层和下层(1m)泥沙的粒度细且均一、组分亦无大的变化,泥沙重金属的溶出浓度满足国家土壤环境标准.水热固化样品抗弯强度可达17MPa,固化体强度增加的主要原因是托勃莫来石晶相的生成.
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