| 高强混凝土的脆性与断裂面特征的关系 |
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| 引用本文： | 严安,吴科如,张东,姚武.高强混凝土的脆性与断裂面特征的关系[J].同济大学学报(自然科学版),2002,30(1):66-70. |
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| 作者姓名： | 严安 吴科如 张东 姚武 |
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| 作者单位： | 同济大学混凝土材料研究国家重点实验室,上海,200092 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助项目 ( 19980 2 470 4) |
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| 摘 要： | 给出了基于荷载挠度全曲线的脆性指数B和基于断裂面的脆性指数R，对不同材料组成的混凝土试验测定了这两种脆性和强度，比较了这两种脆性的相关性，指出了混凝土材料的脆性实质上是断裂面上的脆性指数R的变化，通过掺入冶金集料改变断裂面的脆性指数R，使混凝土的脆性减小并提高了混凝土的强度。
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| 关 键 词： | 脆性 断裂面 冶金集料 高强混凝土 脆性指数 强度 原料配比 |
| 文章编号： | 0253-374(2002)01-0066-05 |
| 修稿时间： | 2001年5月9日 |
Relationship between Brittleness and Characterization of Fracture Surface for High Strength Concrete |
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| YAN An,WU Ke-ru,ZHANG Dong,YAO Wu.Relationship between Brittleness and Characterization of Fracture Surface for High Strength Concrete[J].Journal of Tongji University(Natural Science),2002,30(1):66-70. |
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| Authors: | YAN An WU Ke-ru ZHANG Dong YAO Wu |
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| Abstract: | Based on the complete load-displacement curve and fracture surface, the brittleness index B and R are presented respectively in the paper. The parameters, including two brittleness indexes and strength, are measured by experiments. The correlation between B and R is given and it is pointed out that the inherence of brittleness is embodied on the fracture surface. Replacing part of normal aggregate with metallic aggregate, the brittleness of concrete is decreased and the strength of concrete is increased. |
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| Keywords: | brittleness fracture surface metallic aggregate |
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