Numerical simulation study on the mechanical behaviors of frost‐damaged recycled sand powder concrete DOI Open Access

Quan Ma,

Jianzhuang Xiao, Wei Yang

et al.

Structural Concrete, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Abstract This study established a multiphase, three‐dimensional finite element model of recycled sand powder concrete (RSPC) using the ABAQUS software. A freeze–thaw damage based on deterioration mechanical properties was developed from experimental test results and applied to micro‐scale numerical simulation. The indicated that RSPC deteriorate with increasing cycles, defects in micro‐powder fine aggregates become more pronounced during process. simulation showed maximum error 12.97% compared data (all within 15%), confirming validity model. Specimen failure primarily concentrated at bonding interface between new/old mortar, an overall “X‐shaped” pattern. Furthermore, as number cycles increased, ITZ2 (the interfacial transition zone old mortar) accelerated propagation concrete, significantly amplifying internal RSPC.

Language: Английский

Numerical simulation study on the mechanical behaviors of frost‐damaged recycled sand powder concrete DOI Open Access

Quan Ma,

Jianzhuang Xiao, Wei Yang

et al.

Structural Concrete, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Abstract This study established a multiphase, three‐dimensional finite element model of recycled sand powder concrete (RSPC) using the ABAQUS software. A freeze–thaw damage based on deterioration mechanical properties was developed from experimental test results and applied to micro‐scale numerical simulation. The indicated that RSPC deteriorate with increasing cycles, defects in micro‐powder fine aggregates become more pronounced during process. simulation showed maximum error 12.97% compared data (all within 15%), confirming validity model. Specimen failure primarily concentrated at bonding interface between new/old mortar, an overall “X‐shaped” pattern. Furthermore, as number cycles increased, ITZ2 (the interfacial transition zone old mortar) accelerated propagation concrete, significantly amplifying internal RSPC.

Language: Английский

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