| 摘要: |
| 通过室内模拟试验，研究了冻融和碳化共同作用下混凝土质量和相对动弹性模量的变化规律.结果表明：混凝土在冻融和碳化共同作用下的损伤大于其在冻融单一作用下的损伤.建立了混凝土在冻融和碳化共同作用下的损伤模型，该模型拟合精度较高. |
| 关键词: 混凝土 冻融循环 碳化 损伤模型 |
| DOI：103969/j.issn1007 9629201505008 |
| 分类号: |
| 基金项目:国家自然科学基金重点项目（50538060）；陕西省教育厅科研计划项目（2013JK0968） |
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| Damage Model for Concrete Subjected to Freeze Thaw Cycles and Carbonation |
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XIAO Qianhui1, NIU Ditao2
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1.Institute of Architecture and Civil Engineering, Xian University of Science and Technology, Xian 710054, China;2.Institute of Civil Engineering, Xian University of Architecture and Technology, Xian 710055, China
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| Abstract: |
| Experimental study of concrete specimens subjected to freeze thaw cycles and carbonation was carried out. Mass loss rate and relative dynamic modulus of elasticity of concrete were measured. Results show that concrete damage rate accelerates under combined effects of freeze thaw cycles and carbonation. Damage model is established for concrete subjected to freeze thaw cycles and carbonation. |
| Key words: concrete freeze thaw cycle carbonation damage model |
