| 聚苯乙烯纤维轻质混合土的抗压强度特性 |
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| 引用本文： | 朱定华,董磊平,何峰,陈国兴.聚苯乙烯纤维轻质混合土的抗压强度特性[J].陶瓷科学与艺术,2010,32(2):53-57. |
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| 作者姓名： | 朱定华 董磊平 何峰 陈国兴 |
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| 作者单位： | 南京工业大学岩土工程研究所;无锡市伟达交通工程有限公司; |
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| 基金项目： | 交通运输部西部交通建设科技基金资助项目(2009318225100) |
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| 摘 要： | 通过室内无侧限抗压强度实验,研究在聚苯乙烯(EPS)轻质混合土中加入改性聚丙烯纤维,对聚苯乙烯轻质混合土强度特性的改良作用.实验材料为淤泥质粉质黏土、球状EPS颗粒、普通硅酸盐水泥、改性聚丙烯纤维,总含水率为60%,水泥掺入量为15%,EPS掺入量分别为1%、2%、3%,聚丙烯纤维掺入量分别为0、0.05%、0.1%、0.2%、0.4%.结果表明:在水泥掺入量一定时,抗压强度随纤维掺入量的增加显著提高,纤维掺入量达0.4%可以明显提高轻质混合土的无侧限抗压强度;在轻质土中加入纤维,能够提高其残余强度,提高其韧性,试样变形15%后还能保持其完整性,破坏时为塑性破坏.
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| 关 键 词： | 纤维 轻质混合土 抗压强度 变形特性 破坏形态 |
Compressive strength properties of light heterogeneous soil mixed with expanded polystyrene and strengthened by polypropylene fibers |
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| ZHU Ding-hua,DONG Lei-ping,HE Feng,CHEN Guo-xing.Compressive strength properties of light heterogeneous soil mixed with expanded polystyrene and strengthened by polypropylene fibers[J].Ceramics Science & Art,2010,32(2):53-57. |
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| Authors: | ZHU Ding-hua DONG Lei-ping HE Feng CHEN Guo-xing |
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| Affiliation: | 1.Institute of Geotechnic Engineering/a>;Nanjing University of Technology/a>;Nanjing 210009/a>;China/a>;2.Wuxi Weida Traffic Engineering Corporation/a>;Wuxi 214196/a>;China |
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| Abstract: | Based on laboratory unconfined compression strength experiments,the improving effects of the strength properties were investigated when modified polypropylene fibers were added in light heterogeneous soil mixed with the expanded polystyrene(EPS).Test materials were silt clay,EPS spherical particles,ordinary portland cement,and modified polypropylene fibers.The total water content was 60%,cement mixing ratio was 15%,EPS contents was 1%,2%,and 3%,polypropylene fiber mixing amount was 0,0.05%,0.1%,0.2%,and 0.4... |
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| Keywords: | fibers light heterogeneous soil compressive strength deformation behaviours failure modes |
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