中国塑料2024，Vol.38Issue(5)：94-99,6.DOI:10.19491/j.issn.1001-9278.2024.05.017
缓黏结预应力钢绞线用胶黏剂固化指标试验研究
Experimental study on curing index of adhesives for retard-bonded prestressed steel strand
摘要
Abstract
In recent years,the retard-bonded pre-stressed technology has become popular in the pre-stressed structures thanks to its excellent characteristics.The key material for the retard-bonded pre-stressed technology is the retard-bonded pre-stressed steel strand,and the technical principle is to bond the steel strand with the surrounding concrete through an adhesive solidified in the steel strand.Therefore,the bonding and anchoring properties of the structure are improved.At present,there are few researches on the curing evaluation index of the adhesive in academic and engineering circles.In this paper,four common curing indexes of the cured adhesives were studied,including shore hardness,tensile shear strength,compressive strength,and bending strength.The results indicated that the corresponding curing time was close to each other when the four curing indexes of the adhesive reached maximum,indicating that the four curing indexes were consistent.The maximum values of shore hardness exhibited the smallest dispersion coefficient of 0.013,and the charac-teristic value at a shore hardness of 80 D presented the best curing evaluation index for the complete curing of adhesives.关键词
缓黏结预应力技术/胶黏剂/邵氏硬度/拉伸剪切强度/抗压强度/弯曲强度/固化指标Key words
retard-bonded prestressed technology/adhesive/shore hardness/tensile shear strength/compressive strength/bending strength/curing index分类
化学化工引用本文复制引用
蒋方新,李仙花,田清涛,王利民,李佩勋,杜江涛..缓黏结预应力钢绞线用胶黏剂固化指标试验研究[J].中国塑料,2024,38(5):94-99,6.基金项目
住房和城乡建设部研究开发项目(K20200641) （K20200641）
中国建筑科学研究院有限公司青年基金项目(20221802331030014) （20221802331030014）
