| 冻融环境下钢纤维对轻骨料混凝土力学性能的影响 |
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| 引用本文： | 王海龙,申向东,霍俊芳,李红云,周莉萍.冻融环境下钢纤维对轻骨料混凝土力学性能的影响[J].混凝土,2008(8). |
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| 作者姓名： | 王海龙 申向东 霍俊芳 李红云 周莉萍 |
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| 作者单位： | 1. 内蒙古农业大学,内蒙古,呼和浩特,010018
2. 内蒙古工业大学,内蒙古,呼和浩特,010051 |
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| 摘 要： | 以天然浮石为粗骨料,对钢纤维及钢纤维与聚炳烯纤维混合的不同掺量试件进行了25、50、75次慢冻试验,进行了抗压强度、抗折强度及弹性模量的试验,试验发现:随着冻融次数的增加,混凝土的强度损失率逐渐增大,弹性模量和抗折强度有所降低,但是聚炳烯纤维和钢纤维的混合掺入可以有效地在保持混凝土的强度基础上,改善混凝土的韧性.
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| 关 键 词： | 纤维轻骨料混凝土 冻融循环 强度损失 韧性 破坏形态 |
Effect of steel fiber on mechanical properties of lightweight aggregate concrete to freeze-thaw environment |
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| WANG Hai-long,SHEN Xiang-dong,HUO Jun-fang,LI Hong-yun,ZHOU Li-ping.Effect of steel fiber on mechanical properties of lightweight aggregate concrete to freeze-thaw environment[J].Concrete,2008(8). |
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| Authors: | WANG Hai-long SHEN Xiang-dong HUO Jun-fang LI Hong-yun ZHOU Li-ping |
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| Affiliation: | WANG Hai-long 1,SHEN Xiang-dong 1,HUO Jun-fang 2,LI Hong-yun 1,ZHOU Li-ping 1(1.Inner Mongolia Agricultural University,Hohhot 010018,China,2.Inner Mongolia University of Technology,Hohhot 010051,China) |
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| Abstract: | The slow freeze-thaw tests are carried out for 25,50,75 times to two types of concretes:SFLWAC and LWAC mixed with steel fiber and polypropylene fiber.The variation of compressive strength,flexural strength and modulus of elasticity are analyzed after various cycles of freeze-thaw.The results show:on one hand,the ratio of loss of strength rises gradually;on the other hand,flexural strength and modulus of elasticity reduce.Besides,the adding of steel fiber and polypropylene fiber can keep maintain the streng... |
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| Keywords: | lightweight aggregate concrete cyclic freeze-thaw test loss of strength tension failure criterion |
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