废旧轮胎颗粒改性软土的压缩性状试验研究  

Experimental Research on Compression Characteristics of Waste Tire Particles Changing the Properties of Soft Soil

作　　者：肖健 杜永伟 殷杰[3] Xiao Jian;Du Yongwei;Yin Jie(Department of Civil Engineering,Jiangsu Urban and Rural Construction Vocational College;Department of Civil Engineering,Zeda Vocational and Technical College;Faculty of Civil Engineering and Mechanics,Jiangsu University)

机构地区：[1]江苏城乡建设职业学院土木工程学院,江苏常州213147 [2]宿迁泽达职业技术学院土木工程系,江苏宿迁223808 [3]江苏大学土木工程与力学学院,江苏镇江212013

出　　处：《勘察科学技术》2024年第2期6-10,35,共6页Site Investigation Science and Technology

基　　金：国家自然科学基金面上项目(51978315);国家自然科学基金(41402251)。

摘　　要：该文针对软土掺入不同掺量和粒径范围的轮胎颗粒开展一维固结压缩试验,探讨颗粒掺量和粒径范围对土样压缩性状的影响规律。结果表明:掺入橡胶颗粒的土样e-p曲线与纯土相似,均随竖向压力的增大而减小,低压时土样的压缩量大于高压的压缩量;eL-p曲线中eL随竖向压力的增加均表现为指数下降,低掺量的曲线位于高掺量的上方。相同竖向压力时随着粒径范围的增大,15%、35%掺量的土样eL明显增加,50%掺量的土样eL变化趋势基本一致且变化不大;掺入橡胶颗粒土样的压缩系数随竖向压力的增加而减小,相同竖向压力下掺量小的土样压缩系数高于掺量大的土样;土样的压缩性受初始含水率的影响,随着掺量的增加a1~2减小,随着粒径的增加a1~2减小并拟合出压缩系数的预测公式。One-dimensional consolidation compression test is carried out for different content and size range of tire particles added into the soft soil to explore the effects of the particle contents and the size range on the compression properties of soil samples.The results show that the e~p curves of the soil sample mixed with tire particles are similar to those of the pure soil,both decrease with the increase of the vertical pressure.The compression of soil samples at low pressure is greater than that at high pressure.The er.expresses an exponential fall tendency with the increase of the vertical pressure in the e_(L)~p curve,the curves of the low contents are above the high contents.Under the same vertical pressure,as the particle size range increases,the e_(L) increases significantly when the tire particle content is 15% and 35%,the e_(L) of the soil samples with the content of 50% is basically the same and does not change much.The compression coefficient of the soil samples mixed with tire particles decreases with the increase of the vertical pressure.Under the same vertical pressure,the compression coefficient of the soil samples decreases with the increase of the tire particle contents.The compressibility of soil samples is affected by the initial moisture content.With the increase of the contents,a_(1~2) decrease.With the increase of the particle size,ai-2 decreases.The prediction formula of compression coefficient is fitted.

关 键 词：轮胎颗粒 掺量 粒径范围 软土 压缩 

分 类 号：TU447[建筑科学—岩土工程]