Abstract
AbstractUnrecycled tire waste is an enormous global problem because of its non-biodegradability, flammability, and chemical composition. The production and disposal of tires have been on the rise ever since. Due to a shortage of natural resources and increase in waste disposal cost, waste tires in the form of crumbs are widely used as a lightweight material for the backfill in embankment construction. Due to the inherent energy absorption and damping behavior of rubber, research on sand-tire crumb mixtures has shown that there is increase in shear strength and energy absorption capacity. But, very few tests have been performed on soil-tire crumb mixtures. The primary objective of our study involves covering this gap by determining the shear strength and energy absorption characteristics of soil-tire crumb mixture (STCM) by performing direct shear and unconsolidated undrained (UU) triaxial test on disturbed soil samples collected from various site locations, by varying percentage of tire crumbs. Site response studies are done using DEEPSOIL software using both linear and nonlinear methods. Based on the result obtained, it is observed that there is an increase in shear strength in the range of 20–30%, increase in energy absorption 15–20%, and reduction in PGA by 10–15% for the optimum percentage of tire crumb which is site-specific.KeywordsTire crumbsSoilPGAShear strengthEnergy absorption
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