Xiao, Yuanjie, Zheng, Keyang, Chen, Liuxin, and Mao, Jianfeng (2018) Shakedown analysis of cyclic plastic deformation characteristics of unbound granular materials under moving wheel loads. Construction and Building Materials, 167. pp. 457-472.

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Abstract

Cyclic plastic strain behavior of unbound granular materials (UGMs) exhibits significant stress path dependency. Using a customized triaxial apparatus capable of applying stress path loading, a series of laboratory repeated load triaxial (RLT) tests were conducted on two typical UGMs by varying simultaneously the axial stress and the radial stress. Effects of realistic in-situ stress paths due to a passing wheel on cyclic plastic strain behavior of unbound granular base and subbase materials were investigated and quantified. The analyses of experimental results revealed that the accumulated plastic strain responses of both UGMs subjected to different stress path loadings can be described by the shakedown approach. The amount of accumulated permanent strain, permanent strain rate, and resilient strain were used to classify the plastic deformation accumulation patterns of tested materials under moving wheel loads. Finally, the significance of the research findings on pavement analysis and design practices was highlighted to evaluate permanent deformation resistance of UGMs and their suitability for use in rut resistant and stable pavement foundation layers.

Item ID:	85653
Item Type:	Article (Research - C1)
ISSN:	0950-0618
Copyright Information:	© 2018 Elsevier Ltd. All rights reserved.
Date Deposited:	28 May 2025 04:23
FoR Codes:	40 ENGINEERING > 4005 Civil engineering > 400502 Civil geotechnical engineering @ 50% 40 ENGINEERING > 4005 Civil engineering > 400503 Complex civil systems @ 25% 40 ENGINEERING > 4005 Civil engineering > 400599 Civil engineering not elsewhere classified @ 25%
SEO Codes:	27 TRANSPORT > 2702 Environmentally sustainable transport activities > 270299 Environmentally sustainable transport activities not elsewhere classified @ 100%
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