Effects of particle shape on the collapse behaviour of a coarse grain material

Research output: Book chapter/Published conference paperConference paper

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Abstract

When dried granular material is subjected to saturation, depending on its properties and stress distribution in the soil mass, collapse settlement may occur due to sliding along grain contacts, particle rearrangement and their breakage. Collapse settlement is particularly important in the upstream side of clay core embankment dams during first filling and in road embankment if it is inundated. In this research, the effects of saturation on the shear strength parameters and collapse behaviour of a type of gravelly material are investigated via medium-scale direct shear test apparatus. Collapse tests were conducted by using direct shear test on the initially dry samples, which were flooded during shearing in the specific shear stress level. Tests have been done on sub-angular and angular shape aggregates with the same origin, gradation curve and specific gravity. It is shown that samples with sub-angular particles have more strength and less collapse settlement than samples with angular particles, although both types have the same relative density.
Original languageEnglish
Title of host publicationMechanics of Structures and Materials XXIV: Advancements and Challenges
Subtitle of host publicationProceedings of the 24th Australian Conference on the Mechanics of Structures and Materials (ACMSM24)
EditorsHong Hao, Chunwei Zhang
Place of PublicationLondon
PublisherCRC Press
Pages855-860
Number of pages6
ISBN (Electronic)9781138029934, 9781351850216
Publication statusPublished - 06 Jun 2017
Event24th Australasian Conference on the Mechanics of Structures and Materials: ACMSM24 - School of Civil and Mechanical Engineering, Curtin University, Perth, Australia
Duration: 06 Dec 201609 Dec 2016
http://web.archive.org/web/20170308064227/http://scieng.curtin.edu.au/acmsm24/welcome/ (Conference website)

Conference

Conference24th Australasian Conference on the Mechanics of Structures and Materials
CountryAustralia
CityPerth
Period06/12/1609/12/16
OtherThe biennial event of Australasian Conference on the Mechanics of Structures and Materials (ACMSM) has become an important event among academic, practitioners and researchers not only in the Australasian region, but internationally.
Internet address

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