Tang, Yaolan, Wang, Shun, Chen, Liuxin, Chen, Jiarui, and Zhang, Chunshun (2025) A gradation-density-dependent hypoplastic model for calcareous sand with particle crushing. Geotechnique. (In Press)

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Abstract

The impact of particle crushing and relative density on calcareous sand is substantial; however, relevant studies, particularly in constitutive modelling, remain limited. To address this gap, a gradation-density-dependent hypoplastic model has been developed to predict the behaviour of calcareous sand under crushing conditions. First, particle crushing is quantified and represented through a proposed gradation evolution law. The reduction in void ratio on normal consolidation lines (NCLs) and critical state lines (CSLs) is then decomposed into two components: particle rearranging and crushing. By integrating the developed grain size distribution evolution and the void ratio reduction, the model effectively captures the gradation-density-dependent features of NCLs and CSLs. These features are subsequently incorporated into a hypoplastic framework, resulting in a gradation-density-dependent hypoplastic model for calcareous sands. The proposed model demonstrates a strong agreement with a series of experimental results for calcareous sands with varying relative densities.

Item ID:	85638
Item Type:	Article (Research - C1)
ISSN:	1751-7656
Copyright Information:	Copyright © ICE Publishing, all rights reserved.
Date Deposited:	28 May 2025 23:18
FoR Codes:	40 ENGINEERING > 4005 Civil engineering > 400502 Civil geotechnical engineering @ 50% 40 ENGINEERING > 4019 Resources engineering and extractive metallurgy > 401902 Geomechanics and resources geotechnical engineering @ 50%
SEO Codes:	27 TRANSPORT > 2799 Other transport > 279999 Other transport not elsewhere classified @ 100%
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