水下不分散混凝土力学性能试验研究  

Experimental study on mechanical property of non-dispersible underwater concrete

作　　者：王迎飞[1,2] 王胜年[1,2] 黄君哲[1,2] 潘德强[1,2] 

机构地区：[1]中交四航工程研究院有限公司,广东广州510230 [2]交通运输部水工构造物耐久性技术交通行业重点实验室,广东广州510230

出　　处：《水运工程》2009年第10期65-69,共5页Port & Waterway Engineering

基　　金：西部交通科技项目"水下混凝土材料及耐久性研究"项目(200231800045)

摘　　要：通过室外水槽模拟试验,研究浇注落差及水平扩散间距对不分散混凝土力学性能的影响,并与陆地成型混凝土进行对比,采用钻芯法进行测试,并通过数理统计进行分析。试验结果表明:浇注落差不宜大于0.75 m,两个浇注点的间距不能大于1.0 m,随着浇注落差的增加,不分散混凝土的物理力学性能及耐久性能呈非线性衰减趋势,不分散混凝土物理力学性能与普通混凝土具有相同的变化规律。Based on the field simulation experiment, we study the influence of molding fall and level diffusion distance on the mechanical property of non-dispersible underwater concrete, which is compared with that of NUC molded on land, adopting drilled-core for test and analyzing based on regressive statistics. It is concluded through the experiment that the molding fall shall not be larger than 0.75 m, and the level diffusion distance shall not be larger than 1.0 m. With the increase of the molding fall, the physical and mechanical properties of nondispersible underwater concrete decrease in a linear feature. Generally, The mechanical property of nondispersible underwater concrete has the same transition rule as ordinary concrete.

关 键 词：不分散混凝土 浇注落差 扩散间距 力学性能 

分 类 号：TU528[建筑科学—建筑技术科学]