Response of gravel-rubber mixtures under direct shear testing: experimental and DEM numerical investigation (2021)
This paper presents the results from direct shear testing of gravel-rubber mixtures through laboratory experiments and numerical simulations with discrete element method (DEM). Mixtures with volumetric proportions of 0%, 10%, 25%, 40% and 100% granulated rubber were tested using a conventional, mediumsized direct shear apparatus under three normal stresses: 30, 60 and 100 kPa. Experimental results show a decrease in shear strength, greater strain at peak shear stress and less dilative behaviour with increasing rubber content. A selection of experimental results were used to calibrate the DEM model to examine the macro- and micro-responses of the mixtures. Good agreement was attained between the simulation and laboratory results under different normal stresses. This simulation exercise demonstrates that DEM is a suitable tool to describe the mechanical behaviour of mixtures made of hard-gravel and soft-rubber particles under direct shear loads without overly complex input parameters.
CitationKevin C, Chiaro G, Ali T, Jayan V, K A (2021). Response of gravel-rubber mixtures under direct shear testing: experimental and DEM numerical investigation. Dunedin, New Zealand: 21st NZGS Conference. 24/03/2021-26/03/2021. NZGS.
This citation is automatically generated and may be unreliable. Use as a guide only.
ANZSRC Fields of Research09 - Engineering::0905 - Civil Engineering::090501 - Civil Geotechnical Engineering
09 - Engineering::0905 - Civil Engineering::090504 - Earthquake Engineering
09 - Engineering::0905 - Civil Engineering::090503 - Construction Materials
09 - Engineering::0907 - Environmental Engineering::090703 - Environmental Technologies
RightsAll rights reserved unless otherwise stated
Showing items related by title, author, creator and subject.
Chiaro G; Palermo A; Banasiak L; Granello G (2019)The objective of the work presented in this paper is to investigate the direct shear strength of gravel and granulated tyre rubber (GTR) mixtures for possible use as seismic-isolation foundation systems for low-rise ...
Chew, Kevin (University of Canterbury, 2021)An innovative 'Eco-rubber geotechnical seismic-isolation foundation system’ has been proposed to help address New Zealand’s waste tyres problem. This foundation system combines gravels with granulated tyre chips to take ...
Tasalloti A; Chiaro G; Banasiak L; Palermo A (Elsevier BV, 2021)© 2020 Elsevier Ltd Recycling and reuse of end-of-life tyres (ELTs) in civil engineering applications is an effective way to minimise environmental and health issues associated with such waste materials and concurrently ...
Niroomandi A; Dhakal, Rajesh; Pampanin, Stefano; Soleymani Ashtiani, M.; de la Torre, C. (New Zealand Concrete Society, 2018)Following the recent earthquakes in Chile (2010) and New Zealand (2010/2011), peculiar failure modes were observed in Reinforced Concrete (RC) walls. These observations have raised a global concern on the contribution of ...
Storm response of a mixed sand gravel beach ridge plain under falling relative sea levels: A stratigraphic investigation using ground penetrating radar Pitman SJ; Jol HM; Shulmeister J; Hart DE (Wiley, 2019)Beach ridge stratigraphy can provide an important record of both sustained coastal progradation and responses to events such as extreme storms, as well as evidence of earthquake induced sediment pulses. This study is a ...
Numerical and experimental validation of Passive Direction and Displacement Dependent (D3) viscous damping device Hazaveh NK; Rad AA; Rodgers GW; Chase, Geoff; Pampanin, Stefano (2018)This paper outlines the concept, development and experimental validations of a new and innovative passive Direction and Displacement Dependent (D3) viscous damping device. The new passive D3 viscous device can provide ...