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首页> 外文会议>Geo-congress >Effect of Rubber Crumbs Volumetric Content on the Shear Strength of Gravelly Soil in Direct Shear Apparatus
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Effect of Rubber Crumbs Volumetric Content on the Shear Strength of Gravelly Soil in Direct Shear Apparatus

机译：橡胶屑体积含量对直接剪切仪中砾石土剪切强度的影响

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Effective recycling and reuse of waste tires can play an important role in addressing environmental and health issues with scrap tire landfills. In New Zealand, gravel-rubber mixtures have been considered as seismic-isolation foundation systems for medium-density low-rise buildings. In this context, this paper, unlike previous studies where sand-rubber mixtures were investigated, gravelly soil is mixed with rubber crumbs with various volumetric proportions of 10%, 25%, and 40%. These gravel-rubber mixtures were tested using a medium-size direct shear apparatus under three vertical stress levels: 30 and 60 kPa, and 100 kPa. The effect of rubber crumbs content on the peak shear strength, friction angle, and dilatancy behaviour of gravelly soil is studied. The results indicate a decrease in shear strength and increase in vertical strain corresponding to peak shear stress with increasing rubber content. A significant reduction in dilatancy was also observed with increasing proportion of rubber crumbs in the mixtures.
机译：废轮胎的有效回收和再利用在解决废轮胎填埋场对环境和健康问题方面可以发挥重要作用。在新西兰，砾石-橡胶混合物被认为是中密度低层建筑的隔震基础系统。在这种情况下，与以前的研究中研究砂-橡胶混合物的研究不同，本文将砾石土与橡胶屑混合，其体积比例分别为10％，25％和40％。使用中型直接剪切设备在三种垂直应力水平：30 kPa和60 kPa，以及100 kPa下测试这些砾石-橡胶混合物。研究了橡胶屑含量对砾石土的峰值剪切强度，摩擦角和剪胀特性的影响。结果表明，随着橡胶含量的增加，对应于峰值剪切应力的剪切强度降低，垂直应变增加。随着混合物中橡胶碎屑比例的增加，膨胀率也显着降低。

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