| 三维编织钢纤维增强渍浆混凝土准静态力学性能 |
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| 引用本文： | 季斌,方秦,麻海燕,余红发.三维编织钢纤维增强渍浆混凝土准静态力学性能[J].东南大学学报(自然科学版),2009(Z2). |
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| 作者姓名： | 季斌 方秦 麻海燕 余红发 |
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| 作者单位： | 南京航空航天大学土木工程系;解放军理工大学工程兵工程学院; |
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| 基金项目： | 国家杰出青年科学基金资助项目(50525825); 江苏省自然科学基金创新学者攀登资助项目(BK2008002); 中国博士后基金资助项目(20070421036); 江苏省“六大人才高峰”高层次人才资助项目(2008) |
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| 摘 要： | 为了优化钢纤维混凝土的各项力学性能,设计优选了大流动性细粒混凝土与长度为70mm、长细比达93.3的长钢纤维,采用三维钢纤维编织技术与渍浆纤维混凝土施工工艺,成功制备出钢纤维体积率Vf为5%和10%的三维编织钢纤维增强渍浆混凝土试件(3D-BSFC).采用微机控制电液伺服万能试验机对基体强度为C50的试件进行了准静态3种低应变率(10-6/s,10-4/s及10-2/s)下的单轴压缩试验,测出了应力-应变全曲线、强度、压缩韧性以及弹性模量,研究了其受压力学特性及钢纤维掺量和应变率对基本力学性能的影响规律.结果表明,高掺量三维正交钢纤维对基体混凝土的强度提高最高达3倍以上,同时改善其变形能力,使韧性增强最高达3.87倍;在较低应变率状态下,强度和弹性模量随着应变率的增大而增大,但增长幅度不大.
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| 关 键 词： | 三维编织钢纤维增强渍浆混凝土 抗压强度 应力-应变曲线 应变率 准静态 弹性模量 |
Quasi-static mechanical properties of 3D orthogonal braid steel fiber reinforced concrete |
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| Ji Bin Fang Qin Ma Haiyan, Yu Hongfa.Quasi-static mechanical properties of 3D orthogonal braid steel fiber reinforced concrete[J].Journal of Southeast University(Natural Science Edition),2009(Z2). |
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| Authors: | Ji Bin Fang Qin Ma Haiyan Yu Hongfa |
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| Institution: | Ji Bin1 Fang Qin2 Ma Haiyan1,2 Yu Hongfa1 (1 Department of Civil Engineering,Nanjing University of Aeronautics , Astronautics,Nanjing 210016,China) (2 Engineering Institute of Engineering Corps,PLA University of Science , Technology,Nanjing 210007,China) |
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| Abstract: | The mechanical properties of steel fiber reinforced concrete were optimized by designing high flowage concrete and long steel fibers with a length of 70 mm and a slenderness ratio of 93.3.Specimens of 3D orthogonal braid steel fiber reinforced concrete(3D-BSFC) with steel fiber volume contents of 5% and 10% were prepared by using of 3D braiding technology for continuous steel fibers and construction technique for slurry infiltrated fiber concrete.The specimens with matrix strength of C50 were tested uniaxia... |
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| Keywords: | 3D braid steel fiber reinforced concrete compressive strength stress-strain curves strain rate quasi-static elastic modulus |
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