Effect of Construction Joint Preparation on Corrosion of Reinforcing Bars Under Atmospheric Environment
Effect of Construction Joint Preparation on Corrosion of Reinforcing Bars Under Atmospheric Environment
复制标题
大气环境下施工缝处理对钢筋腐蚀的影响
DOI：
10.14359/12690
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
H. Hamada
中科院分区：
文献类型：
--
作者：
T. Mohammed;H. Hamada
本文描述了采用不同接缝处理方式的施工缝处混凝土中钢筋腐蚀的详细研究。中间高度有接缝的圆柱形样品被制成并暴露在大气环境中 25 年。经过 25 年的暴露后，对样本进行碳化深度测试，并对接头区域钢筋的腐蚀进行电化学和物理评估。本文提出和讨论的结果得出的结论是，为了增强长期耐用性，应去除接头表面的浮浆。刷掉浮浆后，发现使用砂浆涂层对于长期耐用性非常有效。还提供了其他发现。
This paper describes a detailed investigation on corrosion of steel bars in concrete at construction joints with different joint preparation. Cylindrical specimens with joint at mid-height were fashioned and exposed to the atmospheric environment for 25 years. After 25 years of exposure, the specimens were tested for carbonation depth, as well as electrochemical and physical evaluation of corrosion on the steel bars at the joint region. Results, presented and discussed herein, conclude that to enhance long-term durability, laitance from the surface of the joints should be removed. After brushing-off the laitance, application of a mortar coating was found to be very effective for long-term durability. Other findings are also provided.