Dynamic properties of granular soils and mixtures of typical sands and gravels with recycled synthetic materials
Abstract
This Doctoral Thesis aims to investigate the dynamic properties of the following categories of physical and synthetic geo-materials: (a) Typical sandy and gravelly soils composed of a physical-river sand and a quarry sandy gravel. (b) Granular materials of low unit weight and high porosity composed of volcanic crushed rock. (c) Mixtures of typical sands and gravels with recycled synthetic materials (granulated rubber) composed of waste automobile tires. The experiments are performed in a fixed-free resonant column apparatus. The main objective is to propose analytical relationships for the estimation of shear modulus and damping ratio in a wide range of shearing strain amplitudes. Considering the experimental results, the dynamic response of the geo-materials tested is mainly affected by the following parameters: shearing strain amplitude, confining pressure, void ratio, grain-size characteristics, particles’ shape and composition, whereas the response of the mixtures is also affected ...
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