抗裂防水剂对新旧混凝土界面结合的影响研究  

Anti-cracking and water-proofing admixture influencing the interfacial bonds between the new and old concretes

作　　者：水中和[1] 秦明强[1] 刘佳[2] 陈秋林[2] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,湖北武汉430070 [2]中铁十八局集团武九铁路工程指挥部,天津300222

出　　处：《混凝土》2005年第9期55-57,71,共4页Concrete

摘　　要：本文研究了HEA-JL型抗裂防水剂掺量对新旧混凝土界面结合状态的影响,运用拉拔强度、劈裂强度和抗折强度多种方式评价新旧混凝土界面结合状态,并借助显微硬度仪对试验结果进行验证和分析。研究表明,抗裂防水剂的掺量为6%时界面结合紧密,界面强度高,有利于防水抗渗。The influence of anti-cracking and water-proofing admixture on the interfacial bonds between new and old concretes is presented. The pull-off test, spitting and bending tests were conducted to evaluate the bonding states between new and old concretes. The micro-hardness in the vicinity of the interfaces was also adopted to explain the experimental results. The results showed the strongest interracial bond could be achieved when 6 % admixture was used.

关 键 词：抗裂防水剂 界面结合强度 拉拔强度 显微硬度 

分 类 号：TU528.042.6[建筑科学—建筑技术科学]