减水剂掺量对水下不分散混凝土立方体抗压强度的影响  

Influence of Water Reducer Dosage on Compressive Strength of Underwater Non-dispersive Concrete Cube

作　　者：曾令伟 仲伟秋 郑龙龙 李武绪 廖帅 曲睿 ZENG Lingwei;ZHONG Weiqiu;ZHENG Longlong;LI Wuxu;LIAO Shuai;QU Rui(School of Urban Planning and Municipal Engineering,Xi'an Polytechnic University,Xi'an,Shaanxi 710000)

机构地区：[1]西安工程大学城市规划与市政工程学院,陕西西安710000

出　　处：《现代工程科技》2022年第10期61-64,共4页Modern Engineering Technology

基　　金：国家自然科学基金项目:水下不分散混凝土结构静力和动力性能试验研究,项目编号(50708011);2022年陕西省大学生创新创业训练计划项目,项目编号(S202210709043)。

摘　　要：为探究高性能减水剂掺量对水下不分散混凝土强度的影响,通过优选原材料、外加剂和矿物掺合料,制备水下不分散混凝土,加入聚羧酸高性能减水剂,在不同减水剂掺量情况下对比龄期为3d、7d、28d水下不分散混凝土试块强度,探究聚羧酸高性能减水剂不同掺量对材料立方体抗压强度的影响。试验结果表明,从材料的立方体抗压强度数值大小以及前部分试验来看,减水剂最优掺量应为1.0%。In order to explore the influence of the content of high-performance water-reducing agent on the strength of underwater nondispersible concrete,the underwater non-dispersible concrete was prepared by optimizing raw materials,admixtures and mineral admixtures,and the polycarboxylic acid high-performance water-reducing agent was added.The strength of the underwater nondispersible concrete test block with the age of 3,7 and 28 days was compared under different water reducing agent content,and the effect of different content of polycarboxylic acid high-performance water-reducing agent on the compressive strength of the material cube was explored.The test results show that from the cube compressive strength of the material and the previous part of the test,the optimum dosage of water-reducing agent should be 1.0%.

关 键 词：水下不分散混凝土 聚羧酸高性能减水剂 掺量 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]