砂-轮胎橡胶颗粒轻质土工填料试验研究.pdfVIP

学兔兔 第 13卷第 1期 建 筑 材 料 学 报 Vo1．13，No．1 2010年2月 JOURNAI OF BUILDING MATERIALS Feb．．2O10 文章编号：1007—9629(2010)01—0116—05 砂一轮胎橡胶颗粒轻质土工填料试验研究 邓 安 ， 冯金 荣 (1．河海大学 岩土工程科学研究所，江苏 南京 210098； 2．河海大学 岩土力学和堤坝工程教育部重点实验室，江苏 南京 210098) 摘要：通过单向压缩试验，分析了砂一轮胎橡胶颗粒轻质土工填料的压缩变形规律和卸载回弹变形 规律，提出了适合该材料的压缩应变一荷载曲线方程．通过直剪试验，研究了砂一轮胎橡胶颗粒轻质 土工填料的剪应力一剪位移关系，分析了配比、应力状态等对剪切特性的影响．通过三轴压缩试验， 研究了砂一轮胎橡胶颗粒轻质土工填料在不同围压下的偏应力一轴向应变一体积变形关系，分析了 配比和应力状态对三轴剪切特性的影响．该研究为废弃轮胎在工程领域的再利用提供了良好的参 考． 关键词：轻质土工填料；砂；轮胎橡胶颗粒；压缩；剪切；应力一应变关系 中图分类号：TU44 文献标志码：A doi：10．3969／j．issn．1007—9629．2010．01．024 Experimental Study On Sand·Shredded Tire Lightweight Fills DENG An ． FENG Jin—rong ， (1．Geotechnical Research Institute，Hohai University，Nanjing 210098，China~2．Key Laboratory of Ministry of Education for Geomechanies and Embankment Engineering，Hohai University，Nanjing 210098，China) Abstract：Sand—shredded tire lightweight fills were prepared by blending sands with shredded tire with proper proportions．A laboratory investigation was conducted to study the materials’compression and shear deformation behaviors．A compression—load model was proposed by 1 D compression tests．Rebound— reload tests was also conducted to reveal materials’plastic deformation．The materials’shear stress—dis— placement behavior were studied by direct shear tests． Deviatoric stress-axial strain-volumetric strain curves were observed by triaxial compression tests．Effects of mixing ratios and stress conditions on shear behaviors were also investigated．The efforts made in the paper provides better reference fo