矿渣-水泥固化碱渣土的工程特性  

Engineering Properties of Solidified Soda Residue with GGBS and Cement

作　　者：陈永辉[1,2] 陈明玉[1,2] 张婉璐[1,2] 张宇亭[3] 

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [2]河海大学江苏省岩土工程技术工程研究中心,江苏南京210098 [3]交通运输部天津水运工程科学研究院,天津300071

出　　处：《建筑材料学报》2017年第4期582-585,597,共5页Journal of Building Materials

基　　金：浙江省交通运输厅科技计划项目(2014H28);中央级公益性科研院所基本科研业务费专项资金项目(TKS140209);"十二五"国家科技支撑计划项目(2015BAB07B06)

摘　　要：以天津港北疆港区的废弃碱渣为研究对象,提出了利用高炉矿渣微粉(GGBS)、水泥对高含水率碱渣进行固化处理的方法,并对基于模糊评价法得到的优选配合比固化碱渣土的压缩特性进行了研究.结果表明:同等固化剂掺量下,混掺固化剂的固化碱渣土的强度要高于单掺固化剂的固化碱渣土;基于优选配合比(3%水泥+8%GGBS)的固化碱渣土压缩系数及压缩指数随龄期的延长不断降低,而结构屈服应力不断增大.固化碱渣土的压缩性能在屈服前后变化很大,建议工程中应确保上部荷载不能超出其结构屈服应力,以免发生突然破坏.Stabilization for soda residue with ground granulated blast furnace slag（GGBS）and cement was discussed.The waste residue was located in Beijiang distinct of Tianjin port.An optimum proportion was obtained by fuzzy evaluation method and the compressibility test for the solidified soda residue under the optimum proportion was carried out.The results show that under the same curing agent content,the unconfined compressive strength of stabilized soda residue with mixture curing agent is stronger than that with single curing agent;both of the compression coefficient and compression index of stabilized soda residue are decreased with increase of curing age,while the yield stress is increased.Due to the great change of compressibility of stabilized soda residue at the post-yield state,it is suggested that the upper load should not exceed the structural yield stress to prevent sudden damage.

关 键 词：固化碱渣土 优选配合比 无侧限抗压强度 屈服应力 压缩特性 

分 类 号：TQ177.14[化学工程—硅酸盐工业]