| 高强混凝土的断裂性能研究 |
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| 引用本文： | 张国强,李瑞鸽.高强混凝土的断裂性能研究[J].混凝土,2008(1):11-13,16. |
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| 作者姓名： | 张国强 李瑞鸽 |
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| 作者单位： | 平顶山工学院,土木工程系,河南,平顶山,467001 |
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| 摘 要： | 由于混凝土强度越高,脆性越大,限制了混凝土材料的发展及应用,通过试验测量了采用不同掺合物配制的混凝土的断裂韧性、裂纹临界扩展载荷、临界裂纹尖端张开位移和混凝土特征长度,并进行对比分析了各高强混凝土的断裂性能,提出掺加适量的粉煤灰可以增强高强混凝土的韧性,同时也不会显著影响高强混凝土的强度.
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| 关 键 词： | 高强混凝土 断裂 粉煤灰 硅粉 试验 |
| 文章编号： | 1002-3550（2008）01-0011-04 |
| 收稿时间： | 2007-09-12 |
| 修稿时间： | 2007年9月12日 |
Fracture performance of high strength concrete |
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| ZHANG Guo-qiang,LI Rui-ge.Fracture performance of high strength concrete[J].Concrete,2008(1):11-13,16. |
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| Authors: | ZHANG Guo-qiang LI Rui-ge |
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| Abstract: | With the strength of concrete increasing it becomes more brittle,which restrains its development and application.The fracture toughness,critical crackle propagation load,critical crack tip opening displacement and characteristic length of concrete were studied by adding different mineral admixtures.And fracture performances of those concretes were compared and analyzed.Testing results show that when moderate fly ash is added,concrete toughness increases,but the strength doesn't change very much. |
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| Keywords: | high strength concrete fracture fly ash silica fume testing |
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