粉煤灰-水泥体系对重金属铅的固化/稳定效果研究  

Effect of fly ash-cement on the solidification/stabilization of lead

作　　者：汪毅[1] 徐兵[1] 康明 

机构地区：[1]宝钢发展有限公司,上海201900 [2]上海宝钢新型建材科技有限公司,上海201900

出　　处：《新型建筑材料》2016年第7期53-55,共3页New Building Materials

摘　　要：研究重金属Pb对纯水泥和粉煤灰-水泥体系抗压强度、水化程度、毒性浸出以及孔径分布等性能的影响,结果表明,纯水泥和粉煤灰-水泥均可以有效固化/稳定重金属Pb。重金属Pb对水泥的水化反应影响较小,对纯水泥试样的强度发展以及孔分布影响较弱;Pb的添加可以促进粉煤灰的火山灰反应程度,但是反应产物对样品强度的贡献有限,从而明显减缓粉煤灰-水泥试样的强度发展。This research investigated the influence of Pb （OH）2 on the compressive strength,hydration degree,toxic leaching and pore size distribution of cement and fly ash-cement samples. The results showed that both cement and fly ash-cement materials are appropriate for the solidification/stabilization of lead. Pb（OH）2 had little effect on the cement hydration,the strength development and pore size distribution of cement sample. The addition of Pb（OH）2 accelerated the hydration degree of fly ash,however, the hydration products showed a little contribution on the strength of sample and,therefore,obviously lowered down the strength de- velopment.

关 键 词：固化 稳定 重金属 粉煤灰 水泥 

分 类 号：TU528.09[建筑科学—建筑技术科学]