东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (6): 899-903.DOI: 10.12068/j.issn.1005-3026.2016.06.029

• 资源与土木工程 • 上一篇    下一篇

泡粒混凝土的力学性能与本构关系

徐爽1, 朱浮声1, 张俊1, 褚小溪2   

  1. (1. 东北大学 资源与土木工程学院, 辽宁 沈阳110819; 2. 辽宁省强制隔离戒毒所, 辽宁 沈阳110098)
  • 收稿日期:2015-03-31 修回日期:2015-03-31 出版日期:2016-06-15 发布日期:2016-06-08
  • 通讯作者: 徐爽
  • 作者简介:徐爽(1978-),男,辽宁沈阳人,东北大学博士研究生; 朱浮声(1948-),男,黑龙江齐齐哈尔人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学青年基金资助项目(51008053); 中央高校基本科研业务费专项资金资助项目(N120401005;N140104006).

Mechanical Property and Constitutive Relation of Foamed Particles Concrete

XU Shuang1, ZHU Fu-sheng1, ZHANG Jun1, CHU Xiao-xi2   

  1. 1. School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China; 2. Liaoning Province Compulsory Isolation Detoxification Institute, Shenyang 110098, China.
  • Received:2015-03-31 Revised:2015-03-31 Online:2016-06-15 Published:2016-06-08
  • Contact: XU Shuang
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摘要: 考虑聚苯颗粒体积比及湿密度等级两个影响因素,配制了共计25组不同配比的泡粒混凝土.研究了加载速率对泡粒混凝土应力-应变曲线的影响情况,结果表明其应变率效应不明显;并研究了不同聚苯颗粒含量以及不同湿密度等级对泡粒混凝土的应力-应变曲线的影响情况,结果表明此材料的密度以及聚苯颗粒含量对其力学性能影响均很大,并表现出不同的规律性.通过对其弹性模量、压溃应力、压溃应变等参数的分析,结合试验结果,建立了该材料的单轴压缩唯象本构模型,通过试验结果与预测结果的比较,唯象本构模型与试验结果吻合较好.

关键词: 泡粒混凝土, 弹性模量, 压溃应力, 压溃应变, 唯象本构模型

Abstract: Considering two factors of the polystyrene particle content and wet density, 25 groups of foamed particles concrete with different proportions were prepared. The strain rate effect is not obvious by studying the loading speed on stress-strain curve of foamed particles concrete. The effect of different polystyrene particles content and different wet density on stress-strain curve of foamed particles concrete was also studied. The results show that the influence of polystyrene particles content and wet density on mechanical properties was obvious. Through the analysis of modulus of elasticity, crushing stress, crushing strain and other parameters, combining with test results, a phenomenological uniaxial compressive constitutive model of foamed particles concrete is established. Comparing test results with modeling predictions, good agreements are obtained between the phenomenological constitutive model and test results.

Key words: foamed particles concrete, modulus of elasticity, crushing stress, crushing strain, phenomenological constitutive model

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