| 聚苯乙烯泡沫（EPS）变形特性的试验研究 |
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| 引用本文： | 梁燕,谢永利,刘保健.聚苯乙烯泡沫（EPS）变形特性的试验研究[J].中南公路工程,2007,32(3):76-78,81. |
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| 作者姓名： | 梁燕 谢永利 刘保健 |
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| 作者单位： | 长安大学公路学院特殊地区公路工程教育部重点实验室 陕西西安710064 |
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| 基金项目： | 西部交通建设科技项目（200231881224） |
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| 摘 要： | 由于聚苯乙烯泡沫(EPS)具有隔热性好、自重轻、自立性强、耐久性好、吸水性小及压缩性大等优良性能,使它在公路工程中得到广泛的应用。通过对四种重度(0.13 kN/m3、0.16 kN/m3、0.18 kN/m3、0.23 kN/m3)的EPS做三轴不固结不排水试验,得到结论:围压作用下,EPS的变形不可忽略。当EPS重度较大时,围压(特别是围压较大时)对轴向应变的影响小;当重度较小时,影响大。偏应力为负值试样也发生一定的轴向应变。
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| 关 键 词： | 聚苯乙烯泡沫塑料(EPS) 变形特性 三轴试验 |
| 文章编号： | 1002-1205（2007）03-0076-03 |
| 修稿时间： | 2006-08-29 |
The Laboratory Study of EPS Deformation Property |
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| LIANG Yan, XIE Yongli, LIU Baojian.The Laboratory Study of EPS Deformation Property[J].Central South Highway Engineering,2007,32(3):76-78,81. |
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| Authors: | LIANG Yan XIE Yongli LIU Baojian |
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| Abstract: | With the properties of good insulation, low density, good self-support, long use time, poor hygroscopic effect and high compressibility, EPS has been widely used in road engineering. Through tri-axial UU tests, this paper discusses the deformation property of EPS of weight density 0.13 kN/m^3 . 0.16 kN/m^3 ,0.18 kN/m^3 and 0. 23 kN/m^3. The results present that the deformation of EPS cant be ignored under the function of the surrounding pressure. The influence of the surrounding pressure on axial strain is greater in low density and smaller in high one. The EPS samples have certain axis strain even if deviator stress is negative. |
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| Keywords: | Expand polystyrene deformation Property tri-axial UU tests |
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