作　　者： ; ; ; ;

机构地区： 华南理工大学材料科学与工程学院

出　　处： 《水泥》 2009年第4期5-8,共4页

摘　　要： 对生活垃圾焚烧炉渣与矿渣双掺制备的少熟料砌筑水泥的各项物理性能及其制品中重金属溶出的环境安全性进行了研究。结果表明:炉渣掺量越高,砌筑水泥胶砂强度越低;复掺矿渣后,炉渣中的碱离子能激发矿渣的活性,使强度降幅减小;掺入占矿渣掺量9%的水玻璃(固含量为45%,模数为1.6)能有效改善凝结时间,使之达到标准要求;当炉渣掺量为45%,矿渣掺量为44%,水泥掺量为11%时,能在最大限度消耗炉渣、使用矿渣和减少熟料的同时,保证强度达到最佳值;掺炉渣和矿渣的砌筑水泥制品的重金属浸出浓度均低于浸出毒性标准限值,且低于V类地表水标准限值,不会对环境造成污染。 The physical performance of masonry cement that prepared with small amount of clinker and municipal solid waste incineration bottom ash and slag as admixtures was studied, and the environmental safety was evaluated too. The results showed that the higher amount of bottom ash, the lower strength of masonry cement; but the strength decline rate reduced when slag replaced some of cement, because alkali ions of bottom ash excited the activity of slag. The water glass with 45% solid content and modulus value 1.6 as activator could make the setting time meet standard requirement when its mixing amount was 9% of slag. The strength of the masonry cement could be the best with 45% bottom ash, 44% slag and 11% cement mixed. The leaching concentration of heavy metals from masonry cement samples mixed with bottom ash and slag was lower than leaching toxicity limited value and the limited value of surface water type V.

关 键 词： 生活垃圾焚烧炉渣 矿渣 砌筑水泥

领　　域： [化学工程] [化学工程]