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Marine field test for steel reinforcement embedded in mortar: Coupled influence of the environmental conditions on corrosion
Marine Structures ( IF 3.9 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.marstruc.2020.102788
Yuwan Tian , Cheng Wen , Gui Wang , Jiezhen Hu , Zijie Mai

Abstract This paper studied the environmental conditions and corrosion behaviour of mortar samples at two different marine tidal zones and investigated the correlation among the environmental conditions, corrosion rates, and corrosion products. From the experimental results, the concrete structure damage is a function of numerous correlated factors such as the temperature, humidity, and corrosion products. The chloride penetration rate increased by 15% when the humidity increased by 10% and temperature increased 4 °C. Chloride content is the main factor intensifying the reinforcement corrosion. Although the high temperature, humidity, and chloride concentration aggravate the early corrosion of reinforcement, the role of resultant corrosion products shows more important in the developing stage of corrosion damage. The resultant corrosion products affect further corrosion persistence in a complex way, because in some cases, corrosion products-caused cracks will promote corrosion, while in others, corrosion is reduced by sealing the pores with products.

中文翻译:

砂浆内钢筋的海洋现场试验:环境条件对腐蚀的耦合影响

摘要 研究了两个不同海洋潮区砂浆样品的环境条件和腐蚀行为,研究了环境条件、腐蚀速率和腐蚀产物之间的相关性。从实验结果来看,混凝土结构损伤是温度、湿度和腐蚀产物等众多相关因素的函数。湿度每增加10%,温度每增加4℃,氯化物渗透率增加15%。氯化物含量是增强钢筋腐蚀的主要因素。虽然高温、高湿和氯化物浓度加剧了钢筋的早期腐蚀,但在腐蚀破坏发展阶段,由此产生的腐蚀产物的作用更为重要。
更新日期:2020-09-01
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