砂-轮胎橡胶颗粒轻质土工填料试验研究

Experimental Study On Sand-Shredded Tire Lightweight Fills

摘要:

通过单向压缩试验,分析了砂-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-荷载曲线方程.通过直剪试验,研究了砂-轮胎橡胶颗粒轻质土工填料的剪应力-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-轮胎橡胶颗粒轻质土工填料在不同围压下的偏应力-轴向应变-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.

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 1D compression tests.Rebound-reload tests was also conducted to reveal materials' plastic deformation.The materials' shear stress-displacement behavior were studied by direct shear tests.Deviatoric stress-axial strain-volumetric strain curves were ob...