Z. Yang, Z. Lu, W. Shi, C. Wang, X. Ling, J. Li, D. Guan
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Abstract
Waste rubber has been widely applied in geotechnical engineering benefiting from its light weight, high elasticity, low density, good durability, and high compressibility. In this paper, the effect of rubber content (RC) and rubber size (d0) on the dynamic properties of expansive soil-rubber (ESR) was investigated by low-temperature dynamic triaxial tests. The results show that: (1) the shear stress of ESR decrease as the increase of RC with the particle size ratio of 1.3, but decrease first and then increase with the particle size ratio of 2.4; (2) the RC threshold between soil-like and rubber-like ESR is 10%; (3) the maximum shear modulus ratio of ESR occurs at RC = 10 % and d0 = 0.25 mm, with the best dynamic performance; (4) hysteretic curve of ESR was flat and elliptical, deviating upward to the right at freezing condition. In addition, different contact modes between rubber and expansive soil are proposed and the contact mechanism has been revealed.
期刊介绍：
An online only, rapid publication journal, Geosynthetics International – an official journal of the International Geosynthetics Society (IGS) – publishes the best information on current geosynthetics technology in research, design innovation, new materials and construction practice.
Topics covered
The whole of geosynthetic materials (including natural fibre products) such as research, behaviour, performance analysis, testing, design, construction methods, case histories and field experience. Geosynthetics International is received by all members of the IGS as part of their membership, and is published in e-only format six times a year.
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