| 粉煤灰混凝土与钢筋粘结性能试验(英文) |
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| 引用本文： | 王倩,吴瑾.粉煤灰混凝土与钢筋粘结性能试验(英文)[J].南京航空航天大学学报(英文版),2012(3):302-306. |
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| 作者姓名： | 王倩 吴瑾 |
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| 作者单位： | 南京航空航天大学航空宇航学院 |
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| 基金项目： | Supported by the Program of Excellent Talents in Six Fields of Jiangsu Province(2008183)~~ |
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| 摘 要： | 采用钢筋开槽内贴应变片的试验方法,研究粉煤灰掺量对粉煤灰混凝土与钢筋粘结性能的影响。在不同的粉煤灰掺量下给出粘结应力-自由端滑移的关系曲线、钢筋应变-锚固位置的关系曲线、粘结应力-锚固位置的关系曲线。结果表明:掺加粉煤灰可以提高混凝土与钢筋的粘结应力;掺粉煤灰的混凝土拉拔试件钢筋应变沿锚固长度上的分布更均匀;粉煤灰掺量为20%的拉拔试件的极限粘结应力和极限滑移值均较大。
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| 关 键 词： | 粉煤灰混凝土 粘结性能 粉煤灰掺量 粘结应力分布 |
BOND PERFORMANCE EXPERIMENT FOR FLY ASH CONCRETE AND STEEL BAR |
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| Wang Qian, Wu Jin.BOND PERFORMANCE EXPERIMENT FOR FLY ASH CONCRETE AND STEEL BAR[J].Transactions of Nanjing University of Aeronautics & Astronautics,2012(3):302-306. |
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| Authors: | Wang Qian Wu Jin |
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| Institution: | (College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing, 210016, P. R. China) |
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| Abstract: | The impact of fly ash content on bond performance of steel bars and their surrounding concrete is studied by means of sticking strain gauges on steel bars. The average bond stress-slip curves, the steel strain-anchor location curves, and the bond stress-anchor position curves of the pullout specimens with various fly ash contents are obtained. Results indicate that the bond performance of concrete and steel bars can be improved and the distribution of steel strain along the anchorage length tends to be more uniform by adding fly ash in concrete specimens, and both ultimate bond stress and ultimate slip deformation increase the most when 20% of specimens′ content is fly ash. |
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| Keywords: | fly ash concrete bond performance fly ash content bond stress distribution |
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