水泥与粗颗粒复合改良淤泥土试验研究  

Experimental Study of Cement and Coarse Particle Composite Modified Silt Soil

作　　者：蒋光荣 郭显顶 秦玉禹 黄煌 黄益鑫 黄寒微 许尔金 高景泉 Jiang Guangrong;Guo Xianding;Qin Yuyu;Huang Huang;Huang Yixin;Huang Hanwei;Xu Erjin;Gao Jingquan(Cangnan County Water Resources Bureau,Wenzhou City,Wenzhou 325899,Zhejiang;School of Water Resources and Environmental Engineering,Zhejiang University of Water Resources and Hydropower,Hangzhou 310018,Zhejiang;Wenzhou Water Conservancy Construction Management Center,Wenzhou 325000,Zhejiang;Zhejiang Water Engineering Consulting Co.,Ltd.,Hangzhou 310052,Zhejiang)

机构地区：[1]温州市苍南县水利局,浙江温州325899 [2]浙江水利水电学院水利与环境工程学院,浙江杭州310018 [3]温州市水利建设管理中心,浙江温州325000 [4]浙江水专工程顾问有限公司,浙江杭州310052

出　　处：《陕西水利》2024年第9期5-8,共4页Shaanxi Water Resources

基　　金：浙江水利水电学院科研基金项目(xky2022013);浙江省社科规划项目(22FNSQ66YB)

摘　　要：以温州市苍南县海塘安澜工程(南片海塘)护塘河施工建设产生的淤泥土为研究对象,分别掺入50%和60%三澳核电站粗颗粒弃土和32.5级水泥进行改良,采用GDS三轴仪进行室内试验,研究粗颗粒和水泥掺量对改良土力学性能的影响。结果表明,改良土的粘聚力的大小受粗颗粒掺量的影响较大,最大粘聚力为425.19kPa;内摩擦角受粗颗粒掺量影响较小,受水泥掺量和养护龄期影响大,最大内摩擦角为47.12°;掺60%粗颗粒和15%水泥得到的剪切强度最大。The silt produced by the construction of the Tang River Protection Project(Southern Seawall)in Cangnan county,Wenzhou city was used as the research object,and 50%and 60%of Sanao Nuclear Power Plant coarse-grained spoil and 32.5-grade cement were mixed into it respectively for improvement,and GDS III was used.Axis Instruments conducted indoor experiments to study the effects of coarse particles and cement content on the mechanical properties of improved soil.The results show that the cohesion of the improved soil is greatly affected by the content of coarse particles,and the maximum cohesion is 425.19 kPa;the internal friction angle is less affected by the content of coarse particles,and is affected by the cement content and curing age.Large,the maximum internal friction angle is 47.12°;the shear strength obtained by mixing 60%coarse particles and 15%cement is the highest.

关 键 词：淤泥土 粗颗粒土 复合改良 三轴试验 力学特性 

分 类 号：TU411.7[建筑科学—岩土工程]