Title

Macro and microscale Engineering Response of Rigid-Soft Gravel-Rubber Inclusions: Insights from Detailed Laboratory and DEM Numerical Investigations

Publication Name

Lecture Notes in Civil Engineering

Abstract

This paper summarizes the main results of a broader research activity aimed at facilitating the use of gravel-rubber mixtures (GRMs) in geotechnical engineering applications. Precisely, the results of direct shear tests carried out on three GRMs having different aspect ratios (AR = 0.28, 0.57, and 0.66) and prepared at different volumetric rubber contents (VRC = 0, 10, 25, 40, and 100%) are reported and discussed. Additionally, an original 3D hybrid DEM numerical model (named DEM4GRM model) for rigid-soft particle mixtures is presented, and its performance is evaluated. Lastly, using newly proposed micromechanical equations, factors such as fabric and force anisotropy, and strong-force chains are systematically examined throughout the shearing process to gain insight on the particle-level behavior of mixtures with varying VRC.

Open Access Status

This publication is not available as open access

Volume

196

First Page

11

Last Page

27

Funding Number

56289

Funding Sponsor

Ministry of Business, Innovation and Employment

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Link to publisher version (DOI)

http://dx.doi.org/10.1007/978-981-16-6557-8_2