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Article: Eco-friendly recycled crushed glass for cushioning boulder impacts

TitleEco-friendly recycled crushed glass for cushioning boulder impacts
Authors
Keywordsboulder impact
recycled crushed glass
cushioning material
debris flow
barrier wall
Issue Date2019
PublisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgj
Citation
Canadian Geotechnical Journal, 2019, v. 56 n. 9, p. 1251-1260 How to Cite?
AbstractA large amount of waste glass is generated every year and contributes significantly to landfills. Large-scale physical model tests were carried out to study the dynamic response of recycled crushed glass (RCG) contained in gabion baskets and its performance against successive boulder impacts at energy levels of up to 70 kJ. The cushioning performance of RCG is compared with that of more conventional cushioning materials, including rock fragments and cellular glass aggregates. Results reveal that for the first impact, RCG can provide up to 144% and 128% reduction in the transmitted wall loads and boulder impact loads, respectively, when compared with cushion layers comprising rock fragments. It follows that by adopting RCG, practitioners could potentially reduce the recommended design load for impact by a single boulder by up to three times. Furthermore, the load-diffusion angle of RCG is three times larger than that of cellular glass aggregates. The observed trend in the diffusion angle implies that the transmitted load for RCG is distributed more uniformly on the barrier wall compared to cellular glass aggregates.
Persistent Identifierhttp://hdl.handle.net/10722/284042
ISSN
2019 Impact Factor: 2.802
2015 SCImago Journal Rankings: 2.093

 

DC FieldValueLanguage
dc.contributor.authorSu, Y-
dc.contributor.authorChoi, CE-
dc.contributor.authorNg, CWW-
dc.contributor.authorLam, C-
dc.contributor.authorKwan, JSH-
dc.contributor.authorWu, G-
dc.contributor.authorHuang, J-
dc.contributor.authorZhang, Z-
dc.date.accessioned2020-07-20T05:55:38Z-
dc.date.available2020-07-20T05:55:38Z-
dc.date.issued2019-
dc.identifier.citationCanadian Geotechnical Journal, 2019, v. 56 n. 9, p. 1251-1260-
dc.identifier.issn0008-3674-
dc.identifier.urihttp://hdl.handle.net/10722/284042-
dc.description.abstractA large amount of waste glass is generated every year and contributes significantly to landfills. Large-scale physical model tests were carried out to study the dynamic response of recycled crushed glass (RCG) contained in gabion baskets and its performance against successive boulder impacts at energy levels of up to 70 kJ. The cushioning performance of RCG is compared with that of more conventional cushioning materials, including rock fragments and cellular glass aggregates. Results reveal that for the first impact, RCG can provide up to 144% and 128% reduction in the transmitted wall loads and boulder impact loads, respectively, when compared with cushion layers comprising rock fragments. It follows that by adopting RCG, practitioners could potentially reduce the recommended design load for impact by a single boulder by up to three times. Furthermore, the load-diffusion angle of RCG is three times larger than that of cellular glass aggregates. The observed trend in the diffusion angle implies that the transmitted load for RCG is distributed more uniformly on the barrier wall compared to cellular glass aggregates.-
dc.languageeng-
dc.publisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgj-
dc.relation.ispartofCanadian Geotechnical Journal-
dc.rightsCanadian Geotechnical Journal. Copyright © NRC Research Press.-
dc.subjectboulder impact-
dc.subjectrecycled crushed glass-
dc.subjectcushioning material-
dc.subjectdebris flow-
dc.subjectbarrier wall-
dc.titleEco-friendly recycled crushed glass for cushioning boulder impacts-
dc.typeArticle-
dc.identifier.emailChoi, CE: cechoi@hku.hk-
dc.identifier.authorityChoi, CE=rp02576-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1139/cgj-2018-0200-
dc.identifier.scopuseid_2-s2.0-85072034599-
dc.identifier.hkuros311427-
dc.identifier.volume56-
dc.identifier.issue9-
dc.identifier.spage1251-
dc.identifier.epage1260-
dc.publisher.placeCanada-

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