Corrosion-induced cracking and bond strength in reinforced concrete
Corrosion-induced cracking and bond strength in reinforced concrete
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DOI：
10.1016/j.conbuildmat.2019.02.151
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发表时间：
2019-05-30
影响因子：
7.4
通讯作者：
Lees, Janet M.
中科院分区：
文献类型：
--
作者：
Mak, Michele Win Tai;Desnerck, Pieter;Lees, Janet M.
钢筋的腐蚀是混凝土结构劣化的主要原因之一。腐蚀水平的措施通常用于评估钢-混凝土粘结的后续减少，但结果缺乏准确性。在这项研究中，一个新的评估方法的基础上，表面裂纹进行了研究。使用外加电流对试样进行加速腐蚀。通过一种新的密封方法，质量损失与混凝土开裂脱钩。结果表明，表面裂纹宽度可以是比腐蚀水平更好的粘结退化指标。这些发现可以导致更准确的评估和降低基础设施的维护成本。(C)2019爱思唯尔有限公司版权所有。
Corrosion of the steel reinforcement is among the main causes of deterioration in concrete structures. Measures of corrosion levels are typically used to evaluate the subsequent reduction in steel-to-concrete bond, but results lack accuracy. In this study, a new assessment approach based on surface cracks was investigated. Specimens were subjected to accelerated corrosion using an impressed current. With a novel sealing method, mass losses were decoupled from concrete cracking. The results indicate that surface crack widths can be better indicators of bond degradation than corrosion levels. The findings can lead to more accurate assessments and reduced maintenance costs of infrastructure. (C) 2019 Elsevier Ltd. All rights reserved.