水下流态固化土强度与流动性能试验研究  

Experimental study on strength and flow properties of underwater flow-solidified soil

作　　者：谭慧明[1,2] 常艺华 刘志军 付涛 TAN Huiming;CHANG Yihua;LIU Zhijun;FU Tao(College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210024,China;Key Laboratory of Coastal Disaster and Protection of Ministry of Education,Hohai University,Nanjing 210024,China;CCCC Fourth Harbor Engineering Institute Co.Ltd.,Guangzhou 510230,China;Guangzhou Salvage Bureau,Ministry of Transport,Guangzhou 510320,China)

机构地区：[1]河海大学港口海岸与近海工程学院,南京210024 [2]河海大学海岸灾害及防护教育部重点实验室,南京210024 [3]中交四航工程研究院有限公司,广州510230 [4]交通运输部广州打捞局,广州510320

出　　处：《水道港口》2024年第2期237-243,共7页Journal of Waterway and Harbor

基　　金：国家自然科学基金项目(52078187)。

摘　　要：为了完善流态固化土水下施工性能与无侧限抗压强度研究,通过向不同初始含水率的土体中添加减水剂、水泥和絮凝剂,研究含水率、减水剂掺量、水泥掺量和絮凝剂掺量对流态固化土浆体的流动性、抗分散性和流态固化土的力学性能的演化规律。结果表明,只使用水泥不能明显调节流态固化土浆体的流动性和抗分散性;絮凝剂和水泥掺量的增加可以提高流态固化土浆体的抗分散性和固化土的力学性能,对流态固化土浆体的流动性有抑制作用;减水剂和含水率升高对流态固化土浆体的流动性具有促进作用,对流态固化土浆体的抗分散性和力学性能有抑制作用。In order to enhance research on the underwater construction performance and unconfined compressive strength of fluid solidified soil,water reducing agent,cement,and flocculant were added to soil with different initial water contents.The effects of water content,water reducing agent content,cement content,and flocculant content on fluidity,anti-dispersion,and mechanical properties of fluid solidified soil slurry were studied.Results show that cement alone cannot significantly adjust fluidity and anti-dispersion of fluid solidified soil slurry.Increased flocculant and cement content improved anti-dispersion of solidified soil slurry and mechanical properties of solidified soil,while inhibiting fluidity of solidified soil slurry.Increased water reducing agent and water content promoted fluidity of solidified soil slurry,but inhibited anti-dispersion and mechanical properties of solidified soil slurry.

关 键 词：絮凝剂 减水剂 流动性 无侧限抗压强度 抗分散性 

分 类 号：U655[交通运输工程—港口、海岸及近海工程]