| 大气二氧化碳浓度升高对混凝土碳化的影响 |
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| 引用本文： | 高全全,张虎元. 大气二氧化碳浓度升高对混凝土碳化的影响[J]. 混凝土, 2007, 0(4): 17-19 |
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| 作者姓名： | 高全全 张虎元 |
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| 作者单位： | 兰州大学,资源环境学院,甘肃,兰州,730000;兰州大学,土木工程与力学学院,甘肃,兰州,730000 |
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| 基金项目： | 教育部留学回国人员科研启动基金 , 兰州大学金川公司预研基金 |
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| 摘 要： | 基于Fick第一定律建立的混凝土碳化理论模型在实际预测中广泛应用.分析了该模型的可靠性,并从理论的角度探讨了大气污染引起的大气CO2浓度升高对混凝土碳化深度的影响.分析发现,随着大气中CO2浓度的升高,混凝土碳化速度系数不再是一个恒定的量,而是随时间延长不断增大,表明大气污染会加剧混凝土的碳化.该结果应当引起混凝土长期耐久性设计方面的关注.
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| 关 键 词： | 混凝土 碳化 理论模型 大气污染 二氧化碳 |
| 文章编号： | 1002-3550-（2007）04-0017-03 |
| 修稿时间： | 2006-12-31 |
Effect on concrete carbonization by elevating the concentration of CO2 |
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| GAO Quan-quan,ZHANG Hu-yuan. Effect on concrete carbonization by elevating the concentration of CO2[J]. Concrete, 2007, 0(4): 17-19 |
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| Authors: | GAO Quan-quan ZHANG Hu-yuan |
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| Affiliation: | 1. College of Resouree and Environmental Science, Lanzhou University, Lanzhou 730000, China; 2. College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | Concrete carbonization model base on Fick's First Law is used abroad in practical prediction.By verifying the validity of the theoretical carbonization model with published test data,this paper analyzes the effects of CO2 increase due to air pollution on the concrete carbonization.It is found that the carbonization velocity coefficient will not be constant but increased with the elevation of CO2 concentrations resulted from the air pollution.It is concluded that the deterioration of concrete carbonization due to air pollution should be considered in the long-term design of concrete structures from the durability viewpoints. |
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| Keywords: | concrete carbonization theoretical model air pollution CO2 |
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