| 早强聚苯乙烯混凝土动静力学性能试验研究 |
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| 引用本文： | 范建设,丁国博,许金余,刘军忠.早强聚苯乙烯混凝土动静力学性能试验研究[J].施工技术,2011,40(5). |
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| 作者姓名： | 范建设 丁国博 许金余 刘军忠 |
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| 作者单位： | 1. 中国航空港建设第九工程总队,四川,新津,611430
2. 空军工程大学工程学院,陕西,西安,710038 |
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| 基金项目： | 陕西省自然科学基金项目(SJ08E210) |
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| 摘 要： | 对养护龄期分别为12,24,36h的聚苯乙烯()混凝土进行试验,研究了聚苯乙烯(EPS)混凝土的早期抗压强度,利用100mm的SHPB装置进行了冲击压缩试验,得到不同应变率下的全过程应力-应变曲线,并与养护龄期为28d的EPS混凝土力学性能进行比较。结果表明:随着养护龄期的增加,EPS混凝土的抗压强度和抗冲击性能随之增加。养护龄期为36h,28d时,EPS混凝土的动态抗压强度随着应变率的增加而增大,体现了显著的应变率相关性;养护龄期为24,12h时,EPS混凝土的动态抗压强度随着应变率的增加变化不明显。另外,冲击荷载下,EPS混凝土破坏状态呈黏聚性,即碎而不散,表明其具有良好的韧性及优越吸能特性。
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| 关 键 词： | 早强聚苯乙烯混凝土 抗压强度 养护龄期 应力-应变曲线 应变率 |
Experimental Investigation on the Static and Dynamic Behavior of Early-strengthened Polystyrene Concrete |
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| Fan Jianshe,Ding Guobo,Xu Jinyu,Liu Junzhong.Experimental Investigation on the Static and Dynamic Behavior of Early-strengthened Polystyrene Concrete[J].Construction Technology,2011,40(5). |
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| Authors: | Fan Jianshe Ding Guobo Xu Jinyu Liu Junzhong |
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| Abstract: | Early static compressed strength and dynamic impact behavior experiments of early-strengthened polystyrene(EPS) concrete under 12 hours,24 hours and 36 hours maintenance duration were studied,and the stress-strain curves for the whole process in different strain rate were gotten,which were compared with that of EPS concrete under 28 days maintenance duration.The results show that EPS concrete has good deformation ability.The compressed strength and impact mechanics properties of EPS concrete increase with t... |
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| Keywords: | early-strengthened polystyrene concrete compressed strength maintenance duration stress-strain curve strain rate |
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