疏水化合孔栓物对高性能混凝土性能影响的试验及应用  

Experimental research on influence of hydrophobic poreblocking ingredient(HPI) on performance of high-performance concrete and engineering application

作　　者：杨海成[1] 高军[2] 熊建波[1] 王迎飞[1] 范志宏[1] 

机构地区：[1]中交四航工程研究院有限公司,水工构造物耐久性技术交通行业重点实验室,广东广州510230 [2]中交第四航务工程勘察设计院有限公司,广东广州510230

出　　处：《水运工程》2015年第3期113-117,127,共6页Port & Waterway Engineering

摘　　要：研究疏水化合孔栓物对不同强度等级的高性能混凝土工作性、力学性能及耐久性的影响。结果表明:疏水化合孔栓物可改善新拌混凝土工作性、显著降低混凝土吸水率,混凝土吸水率普遍降低50%以上,同时可提高混凝土抗氯离子渗透性。疏水化合孔栓物降低混凝土早期强度,但对后期强度无明显影响。该内掺型疏水材料在范和港跨海大桥、东华大桥等工程中得到推广应用,显著提高了混凝土结构耐久性。The influence of hydrophobic poreblocking ingredient （HPI） on the workability, mechanical property, and durability of concrete with different strength grades is studied. The research result shows that the HPI can improve the fresh concrete＇s workability and reduce water absorption of concrete significantly by more than 50%. The HPI can enhance concrete chloride ion＇s penetration resistance at the same time. It can reduce the early concrete strength, but it has no obvious difference at the later stage. The PI was used in Fanhegang bridge and Donghua bridge and improved the durability of concrete structure significantly.

关 键 词：疏水化合孔栓物 高性能混凝土 工作性 力学性能 抗氯离子渗透性 

分 类 号：TU528[建筑科学—建筑技术科学]