摘要
在缓粘结预应力混凝土结构中,缓粘结钢绞线内的缓凝粘合剂固化后强度是保证钢绞线与混凝土共同工作和结构安全的一项重要技术指标。研究环氧树脂掺量对缓凝粘合剂拉伸剪切强度和抗压强度的影响。结果表明,最佳环氧树脂掺量为缓凝粘合剂的35%,养护时间为160 d时,拉伸剪切强度为16.8 MPa,抗压强度为90 MPa,符合JG/T 370—2012标准规定。
In retarded-bonded prestressed concrete structure,the strength recorded after the retarding adhesive in the retarded-bonded steel strand is cured is the most essential technical index.This data is used in indicating the joining work between steel stand and concrete,it is also a key factor of ensuring the safety of structure.The effect of the amount of epoxy resin on the tensile shear strength and compressive strength are studied.The results show that the optimum content of epoxy resin is 35%of retarding adhesive,when the curing time is 160 d,the tensile shear strength is 16.8 MPa and the compressive strength is 90 MPa,which meets the provisions of JG/T 370—2012 standard.
作者
蒋方新
李仙花
李佩勋
JIANG Fang-xin;LI Xian-hua;LI Pei-xun(China Academy of Building Research,Beijing 100013,China;China Building Technique Group Co.,Ltd.,Beijing 100013,China;Broad Vision Technology and Materials Co.,Ltd.,Beijing 101112,China)
出处
《应用化工》
CAS
CSCD
北大核心
2022年第3期768-770,共3页
Applied Chemical Industry
基金
住房和城乡建设部研究开发项目(K20200641)
中国建筑科学研究院有限公司科研基金项目(20181802330730041)。
关键词
缓粘结预应力
缓凝粘合剂
环氧树脂掺量
拉伸剪切强度
抗压强度
retard-bonded prestressed
the retarding adhesive
epoxy resin content
the tensile shear strength
the compressive strength
作者简介
蒋方新(1985-),男,北京人,高级工程师,硕士,主要从事缓粘结预应力结构工程的研究,电话:15810682215,E-mail:316271991@qq.com;通信作者:李仙花,电话:17627669605,E-mail:1542555600@qq.com。
