Direct shear response of gravel-glass-rubber mixtures

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Conference Contributions - Published
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Date
2023
Authors
Chiaro, Gabriele
Christian, Samuel
Goldingham, Logan
Murali , Arjun
Abstract

This paper reports on preliminary results of a feasibility study aimed at evaluating the potential use of recycled crushed green glass bottles and recycled granulated tire rubber mixed with gravel. Specifically, dry specimens of selected gravel-glass-rubber mixtures (GGRMs) are tested using a medium-size (100 mm × 100 mm × 53 mm - width × length × height) direct shear apparatus under three normal stress levels: 30, 60 and 100 kPa. The effect of glass and rubber content by volume on the peak shear strength, friction angle and energy absorption of the mixtures is investigated. It is shown that GGRMs having 40% rubber content by volume possess adequate strength (i.e., friction angle > 30o), reduced compressibility and excellent energy absorption properties, making such materials suitable structural fills for typical geotechnical applications.

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Citation
Chiaro G, Christian S, Goldingham L, Murali A (2023). Direct shear response of gravel-glass-rubber mixtures. Cairns, Australia: ANZ Geomechanics Conference 2023. 02/07/2023-06/07/2023.
Keywords
recycled glass, recycled rubber, gravel, direct shear, strength, energy absorption
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
40 - Engineering::4005 - Civil engineering::400502 - Civil geotechnical engineering
40 - Engineering::4011 - Environmental engineering::401106 - Waste management, reduction, reuse and recycling
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All rights reserved unless otherwise stated