陈腐垃圾土固化的工程特性试验研究  

Experimental Study on Mechanical Properties of Solidified Old Waste Soil

作　　者：张平 林焕生 李嘉 李爽 丁前绅 刘磊[2,3] ZHANG Ping;LIN Huansheng;LI Jia;LI Shuang;DING Qianshen;LIU Lei(Shenzhen Tagen Pingshan Construction Engineering Co.Ltd.,Shenzhen Guangdong 518118;State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics of Chinese Academy of Sciences,Wuhan Hubei 430071;Hubei Province Key Laboratory of Contaminated Sludge and Soil Science and Engineering,Wuhan Hubei 430071)

机构地区：[1]深圳市天健坪山建设工程有限公司,广东深圳518118 [2]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071 [3]污染泥土科学与工程湖北省重点实验室,湖北武汉430071

出　　处：《环境卫生工程》2023年第6期85-90,共6页Environmental Sanitation Engineering

基　　金：湖北省自然科学基金杰出青年基金项目(2021CFA096);国家自然科学基金项目(41977254);湖北省自然科学基金——创新群体项目(2019CFA012)。

摘　　要：陈腐垃圾土开挖后的原位回填对于垃圾填埋场资源化利用具有重要意义。以典型陈腐垃圾土为研究对象,开展垃圾填埋场腐殖土固化体力学特性试验,对比分析了不同固化试剂(普通硅酸盐水泥、自制硫铝酸盐固化剂、自制水泥-矿渣基固化剂)对固化体力学特性的影响效果。结果显示:固化剂处理后腐殖土的力学特性提升明显,其中自制硫铝酸盐固化剂作为固化剂时性能优于其他固化剂。混合粒径垃圾土经固化后的强度仍然可以满足我国主流公路路基用土标准要求。In-situ backfilling after excavation of old waste soil is of great significance for landfill resource utilization.The typical old waste soil was taken as the research object,the test of curing mechanical properties of humus soil in landfill was carried out,and the effects of different curing reagents of ordinary portland cement,sulphoaluminate cement,blast slag and cement blends on curing mechanical properties were compared and analyzed.The results showed that the mechanical properties of humic soil were improved obviously after curing agent treatment,and the performance of sulphoaluminate cement was better than that of other curing agent.After solidification,the strength of mixed particle size waste could still meet the requirements of mainstream road subgrade soil standards in our country.

关 键 词：垃圾土 腐殖土 固化 力学 

分 类 号：X705[环境科学与工程—环境工程]