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。
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.
出处
《中南公路工程》
2007年第3期76-78,81,共4页
Central South Highway Engineering
基金
西部交通建设科技项目(200231881224)
