Study on the cracking mechanism of strongly weathered purple mudstone under wetting and drying effect through experiments and molecular dynamics simulation

Zhenhua Zhang,Wentian Cui,Zhidan Liu,Wu Liu,Banglu Xi,Mingliang Chen

CONSTRUCTION AND BUILDING MATERIALS（2023）

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摘要

•Investigated the surface microstructure of SWPM after WD test and the explored the mineral components on crack sidewalls.•Established the mudstone crack area (MCA) model and studied the crack expanding process of SWPM in wetting and drying conditions by molecular dynamics.•Clarified the cracking mechanisms of strongly weathered purple mudstone under WD effect.•Provided a theoretical basis for studying the mudstone cracking.

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关键词

Mudstone,Wetting and drying,Meso-structure characteristic,Hyperspectral imaging,Molecular dynamics,Cracking mechanism

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