A comprehensive experimental study on volcanic coarse-grained soils and mixtures of typical sands and gravels with granulated recycled rubber are performed in order to investigate the dynamic properties of shear modulus and damping ratio in a wide range of shearing strains. Based on the experimental data and analytical models commonly used in typical soils, parametric relationships are developed on the purpose of estimating the dynamic properties of the materials mentioned previously, including a variety of shearing strains and possibly different grain-size characteristics or content of rubber in the mixtures.

In this direction, a comprehensive methodology based on an extensive program including experimental tests and theoretical analyses is developed at the Laboratory of Soil Mechanics, Foundations and Geotechnical Earthquake Engineering of Aristotle University of Thessaloniki. The general framework includes the examination and quantification of the efficiency and capability to improve the ground and soil – structure response under seismic loads using physical and synthetic materials.

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