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Grain crushing in geoscience materials – Key issues on crushing response, measurement and modeling: Review and preface

journal contribution
posted on 09.12.2020, 05:34 by Y Xiao, CS Desai, A Daouadji, AW Stuedlein, H Liu, Hossam Aboel Naga
© 2020 China University of Geosciences (Beijing) and Peking University Grain crushing is commonly encountered in deep foundation engineering, high rockfill dam engineering, railway engineering, mining engineering, coastal engineering, petroleum engineering, and other geoscience application. Grain crushing is affected by fundamental soil characteristics, such as their mineral strength, grain size and distribution, grain shape, density and specimen size, and also by external factors including stress magnitude and path, loading rate and duration, degree of saturation, temperature and geochemical environment. Crushable material becomes a series of different materials with the change in its grading during grain crushing, resulting in a decrease in strength and dilatancy and an increase in compressibility. Effects of grain crushing on strength, dilatancy, deformation and failure mechanisms have been extensively investigated through laboratory testing, discrete element method (DEM) modelling, Weibull statistics, and constitutive modelling within the framework of the extended crushing-dependent critical state theory or the energy-based theory. Eleven papers summarized in this review article for this special issue addressed the above issues in grain crushing through the advanced testing and modelling.

Funding

We are greatly thankful to Prof. Xuanxue Mo, Prof. M. Santosh, Dr. Lily Wang and the other editors for their patience, encouragement, and support. We sincerely appreciate the reviewers' valuable comments for improving the manuscripts for this special issue. YX and HLL would like to acknowledge the financial support from the National Science Foundation of China (Grant Nos. 51922024, 41831282, 51678094 and 51578096).

History

Publication Date

01/03/2020

Journal

Geoscience Frontiers

Volume

11

Issue

2

Pagination

12p. (p. 363-374)

Publisher

China University of Geosciences (Beijing) and Peking University

ISSN

1674-9871

Rights Statement

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