摘要
通过新老混凝土粘结立方体劈拉试验,研究新混凝土与经历冻融循环作用后的老混凝土粘结修补性能及新老混凝土粘结面抗冻融破坏能力。采用快速冻融试验,探讨冻融循环次数、粘结面粗糙度和界面剂类型等因素对新老混凝土粘结性能的影响规律。在试验基础上,分析了冻融循环作用对新老混凝土粘结面的损伤机理,并对遭受冻融破坏的混凝土结构粘结修补给出了建议。
On the splitting tensile test of new to old concrete bonding cube specimens, the repairing performance of old concrete subjected to freeze-thaw cycle by the new concrete, and the bonding durability of new to old concrete under freeze-thaw cycle are studied. With quickly freeze-thaw testing, some factors affecting behavior of bonding young to old concrete are invesitigated：cycles of freezing and thawing, method of interracial treatment, interracial roughness, interracial agent, etc. And the damage mechanism of freeze-thaw cycle to young and old concrete bonding was analyzed, then the rational suggestions are put forword for bonding to repair concrete structures after freezing and thawing.
出处
《混凝土》
CAS
CSCD
北大核心
2006年第3期29-32,共4页
Concrete
基金
国家重大基础研究前期计划项目(2004CCA04100)
关键词
冻融循环
新老混凝土粘结
界面剂
劈拉试验
freeze-thaw cycle
bonding of new to old concrete
adherence agent
splitting tensile test
