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Experimental study on steel corrosion in recycled aggregate concrete
Author(s): 
Pages: 76-81
Year: Issue:  3
Journal: Journal of Guangxi University of Technology

Keyword:  再生粗骨料混凝土钢筋锈蚀再生骨料取代率水灰比;
Abstract: 为研究再生粗骨料取代率和水灰比在氯离子侵蚀环境下对再生混凝土钢筋锈蚀规律的影响,对15种不同配合比的再生混凝土试件进行于湿循环试验,采用半电池电位法检测钢筋锈蚀状况.研究结果表明:相同条件下,与普通混凝土相比,再生混凝土的钢筋电位增加较快,电位波动较大,取代率越高,抵抗钢筋锈蚀能力越差,钢筋越容易发生锈蚀;水灰比的增加从整体上提高混凝土的孔隙率,明显缩短钢筋开始锈蚀的时间,且对取代率越高的再生混凝土影响越显著.
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