| 摘要: |
| 通过化学分析手段，对混凝土碳化层物相组成及其变化规律进行分析, 并通过酸度计对混凝土碳化层pH值的变化规律进行研究.结果表明，混凝土中的碳化反应物质变化规律和混凝土碳化的pH值变化规律并不完全一致，混凝土部分碳化的范围由混凝土中碳化反应物质变化的范围所决定，而不是局限在pH值变化的区域内进行.碳化混凝土的横断面由完全碳化区、pH值变化的部分碳化区、向内的pH值稳定的部分碳化区和未碳化区4部分组成. |
| 关键词: 碳化 物相组成 部分碳化区 pH值 |
| DOI：10.3969/j.issn.1007 9629.2012.05.008 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51178455） |
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| Experimental Research and Mechanism Analysis on Semi carbonation Zone in Concrete |
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JI Yong sheng1, ZHANG Ling lei2, MA Hui rong2, XU Cong yu2, WANG Zhi long2
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1.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221008, China;2.School of Mechanics & Civil Engineering, China University of Mining and Technology, Xuzhou 221008, China
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| Abstract: |
| A study on the variation of Ca(OH)2 contents，CaCO3 contents as well as pH value in the carbonated concrete was carried out by chemical analysis test methods.The test results indicate that the variation of phase component is not completely consistent with that of the pH value in corresponding carbonation zone of concrete. The transect of carbonated concrete is composed of complete carbonation zone, semi carbonation zone with changing pH value, semi carbonation zone with stable pH value and non carbonation zone. |
| Key words: carbonation phase component semi carbonation zone pH value |
