| 粉煤灰对混凝土开裂行为的影响及评价 |
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| 引用本文： | 彭卫兵,何真,梁文泉.粉煤灰对混凝土开裂行为的影响及评价[J].建筑材料学报,2004,7(3):317-322. |
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| 作者姓名： | 彭卫兵 何真 梁文泉 |
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| 作者单位： | 1. 清华大学,土木工程系,北京,100084
2. 武汉大学,水资源与水电工程科学国家重点实验室,湖北,武汉,430072 |
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| 摘 要： | 采用ANSYS6．1有限元分析程序，计算了椭圆环约束开裂自动检测装置在干燥条件下的内外边界应力分布．采用改进后的椭圆环约束开裂试验，测定了混凝土砂浆初始开裂时间，并结合混凝土的干缩、抗折强度、极限拉伸应变等测试结果，综合评价了混凝土在非荷载及荷载作用下的抗裂性能．利用上述测试方法和评价体系，研究了粉煤灰对混凝土抗裂性能的影响．
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| 关 键 词： | 混凝土开裂 抗裂性能 粉煤灰 干缩 砂浆 荷载作用 有限元分析程序 极限拉伸 抗折强度 ANSYS |
| 文章编号： | 1007-9629(2004)03-0317-06 |
| 修稿时间： | 2003年11月5日 |
Effects and Evaluation on Cracking Behavior of Concrete Incorporating Fly Ash |
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| PENG Wei-bing,HE Zhen,LIANG Wen-quan.Effects and Evaluation on Cracking Behavior of Concrete Incorporating Fly Ash[J].Journal of Building Materials,2004,7(3):317-322. |
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| Authors: | PENG Wei-bing HE Zhen LIANG Wen-quan |
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| Affiliation: | PENG Wei-bing~1,HE Zhen~2,LIANG Wen-quan~2 |
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| Abstract: | The ellipse ring restrained test technique were used to test concrete shrinkage cracking. The results was analyzed and compared by ANSYS 6.1(finite element analysis tool). Then, the initial cracking time (ICT) of mortar specimen, concrete ultimate elongation, concrete shrinkage, concrete tensile strength were brought forward together to evaluate the cracking properties of concrete blending with fly ash. Concrete incorporating fly ash (four levels of cement replacement: 0, 20%, 35% and 50% by mass), were investigated. |
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| Keywords: | fly ash concrete cracking ellipse ring restrained test technique finite element calculation evaluation method |
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