| 冻融循环作用下混凝土的剪切强度试验研究 |
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| 引用本文： | 李平先,张雷顺. 冻融循环作用下混凝土的剪切强度试验研究[J]. 郑州大学学报(工学版), 2004, 25(4): 12-15 |
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| 作者姓名： | 李平先 张雷顺 |
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| 作者单位： | 1. 郑州大学环境与水利学院,河南,郑州,450002;大连理工大学土木水利学院,辽宁,大连,116024
2. 郑州大学环境与水利学院,河南,郑州,450002 |
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| 基金项目： | 国家自然科学基金，郑州大学校科研和教改项目 |
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| 摘 要： | 采用Z形试件剪切试验方法,对混凝土试件在冻融循环作用下的剪切强度进行了试验研究,并对混凝土冻融损伤的机理进行了初步分析.结果表明,在冻融循环作用下,混凝土的相对剪切强度随冻融循环次数的增加而降低,原因在于冻融循环引起水泥石本身和水泥石与骨料之间产生损伤,降低了混凝土的强度.
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| 关 键 词： | 冻融循环 混凝土 剪切强度 损伤 |
| 文章编号： | 1671-6833(2004)04-0012-04 |
| 修稿时间： | 2004-06-05 |
Experimental Research on Shear Strength of Concrete Subjected to Freezing-and-thawing |
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| LI Ping-xian. Experimental Research on Shear Strength of Concrete Subjected to Freezing-and-thawing[J]. Journal of Zhengzhou University: Eng Sci, 2004, 25(4): 12-15 |
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| Authors: | LI Ping-xian |
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| Affiliation: | LI Ping-xian~ |
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| Abstract: | With Z-shape direct shear specimen, the shear strength of concrete subjected to freezing-and-thawing is discussed.And the mechanics of freezing and thawing deterioration is also analyzed. The results indicate that the relative shear strength decreases with the numbers of freezing cycles. The main reason is that cement paste itself and the interface between aggregate and cement paste deteriorate,which leads to the decrease of the concrete strength. |
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| Keywords: | freezing and thawing concrete shear strength deterioration |
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