吹填软土固化室内试验研究  

Laboratory test for solidification of soft dredger fill

作　　者：袁保军 贾磊 YUAN Bao-jun;JIA Lei(Shanghai Waterway Engineering Design and Consulting Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]中交上海航道勘察设计研究院有限公司,上海200120

出　　处：《水运工程》2022年第9期186-191,共6页Port & Waterway Engineering

摘　　要：针对软土场地表层填筑砂石等材料日益稀缺的问题,进行吹填软土固化室内试验研究。采用无侧限抗压强度试验对比研究吹填软土在低掺入比情况下3种固化剂的加固效果。结果表明:在3种固化剂的低掺入比情况下,吹填软土经固化后强度均增长明显;在水泥中加入复合激发剂和矿渣微粉,对固化土的强度均有提高,矿渣微粉的效果优于复合激发剂;总掺入比不变,采用矿渣微粉替代部分水泥可以进一步提高固化效果。通过室内试验研究吹填软土在低掺入比下的固化规律并反馈工程应用,解决了软土场地填筑材料稀缺的难题。Regarding the increasing scarcity of materials such as sand and gravel for the surface filling of soft soil sites,this study conducts laboratory tests on the solidification of soft dredger fill.The research uses unconfined compressive strength tests to compare the reinforcement effects of three curing agents under the condition of a low incorporation ratio.The results demonstrate that the strength of soft dredger fill increases significantly after solidification under the condition of a low incorporation ratio of three curing agents.The addition of compound activator and slag powder to cement can improve the strength of solidified soil,and the effect of slag powder is superior to that of compound activator.The replacement of part of cement with slag powder can further improve the reinforcement effect when the total incorporation ratio remains unchanged.Through the above laboratory tests for the solidification laws of soft dredger fill under a low incorporation ratio and feedback to the engineering applications,this study solves the problem of the scarcity of filling materials in the soft soil sites.

关 键 词：固化剂 吹填软土 无侧限抗压强度 低掺入比 

分 类 号：TU411.6[建筑科学—岩土工程] U655.54[建筑科学—土工工程]