Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental study on the evolutive shear fracture behaviour and properties of cemented paste backfill
Abstract Shear stress prevalence in in-situ cemented paste backfill (CPB) makes understanding mode-II fracture behaviour and properties vital for the mechanical stability of the backfill structure. This study delves into the effect of cement content on CPB's shear fracture behaviour and properties. Results reveal that higher cement content leads to notable changes in load-displacement characteristics under mode-II loading, including steeper pre-peak slopes, higher peak loads, smaller peak-load displacements, and minimal post-peak resistance. However, increased cement content does not linearly enhance fracture properties. Furthermore, this study proposed predictive models to capture the influence of cement content on the evolutive fracture properties.
Highlights Pre-peak fracture behaviour of CPB is sensitive to changes in cement content. Post-peak resistance in CPB is subtle, regardless of cement content. Increasing cement content nonlinearly boots mode-II fracture properties. Predictive models are developed to capture CPB’s fracture properties.
Experimental study on the evolutive shear fracture behaviour and properties of cemented paste backfill
Abstract Shear stress prevalence in in-situ cemented paste backfill (CPB) makes understanding mode-II fracture behaviour and properties vital for the mechanical stability of the backfill structure. This study delves into the effect of cement content on CPB's shear fracture behaviour and properties. Results reveal that higher cement content leads to notable changes in load-displacement characteristics under mode-II loading, including steeper pre-peak slopes, higher peak loads, smaller peak-load displacements, and minimal post-peak resistance. However, increased cement content does not linearly enhance fracture properties. Furthermore, this study proposed predictive models to capture the influence of cement content on the evolutive fracture properties.
Highlights Pre-peak fracture behaviour of CPB is sensitive to changes in cement content. Post-peak resistance in CPB is subtle, regardless of cement content. Increasing cement content nonlinearly boots mode-II fracture properties. Predictive models are developed to capture CPB’s fracture properties.
Experimental study on the evolutive shear fracture behaviour and properties of cemented paste backfill
Yunpeng, Kou (Autor:in) / Guangbo, Li (Autor:in) / Zepu, Song (Autor:in) / Pengtao, Wang (Autor:in)
07.03.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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An evolutive elasto-plastic model for cemented paste backfill
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