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冰川冻土  2014 

冻融与酸雨侵蚀共同作用下混凝土损伤分析

DOI: 10.7522/j.issn.1000-0240.2014.0177, PP. 1484-1489

Keywords: 混凝土,酸雨侵蚀,冻融循环,损伤模型

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Abstract:

进行了快速冻融和酸雨侵蚀作用下的混凝土室内模拟试验,研究了冻融和酸雨侵蚀作用下混凝土的质量损失和相对动弹性模量变化规律.试验结果表明,混凝土在冻融-酸雨复合环境下的损伤大于冻融作用下的损伤.通过分析研究,建立了冻融循环和酸雨侵蚀共同作用下不同水胶比混凝土的质量损失与冻融循环次数的函数关系及冻融与酸雨腐蚀共同作用下混凝土损伤演化方程,为冻融环境混凝土结构耐久性设计与评估奠定了基础.

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