摘要
依据缓粘结预应力钢绞线的产品构造及技术机理,并结合当前市场现状以及住建部相关标准,重点阐述缓粘结预应力钢绞线用缓凝粘合剂材料的重要性能指标——拉伸剪切强度的快速检验方法。通过不同温度、不同环氧树脂含量、不同加热时间、不同测试时间试验,提出一种检测时间短、检测手段方便的方法,以期为工程应用提供合理、快速、有效的技术支持。
Based on the product structure and technical mechanism, current market situation and relevant standards of the Ministry of Housing and Construction of retard-bonded prestressing steel strand, the rapid testing method of tensile lap-shear strength, which is an important performance index of retarding binder materials for retard-bonded prestressing steel strand was focused on. Through different temperatures, different epoxy resin content, different heating time, different test time tests, a method with short detection time and convenient detection means was proposed to provide reasonable, fast and effective technical support for engineering applications.
引文
[1] 缓粘结预应力钢绞线专用粘合剂:JG/T 370—2012[S].北京:中国标准出版社,2012.
[2] 缓粘结预应力钢绞线:JG/T 369—2012[S].北京:中国标准出版社,2012.
[3] 缓粘结预应力混凝土结构技术规程:JGJ/T 387—2017[S].北京:中国建筑工业出版社,2017.
[4] 胶粘剂拉伸剪切强度的测定(刚性材料对刚性材料):GB/T 7124—2008[S].北京:中国标准出版社,2008.