Tensile performance of pre-cracked UHPC under the coupled actions of sustained loading and corrosive media DOI
Yiming Yao,

Gan Wu,

Kaimeng Yang

et al.

Cement and Concrete Composites, Journal Year: 2024, Volume and Issue: unknown, P. 105915 - 105915

Published: Dec. 1, 2024

Language: Английский

Coupled effects of the freeze-thaw cycles and salt erosion on the performance of recycled aggregate concrete DOI

Zihao Yu,

Hongrui Zhang,

Jiuwen Bao

et al.

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 95, P. 110212 - 110212

Published: July 14, 2024

Language: Английский

Citations

8
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

Citations

0
Study on compressive strength and pore structure evolution of nano‐silica modified aeolian sand concrete under freeze–thaw cycle based on fractal dimension DOI

En Su,

Wei Dong,

Yingzi Yin

et al.

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

Published: April 19, 2025

Abstract This study investigates the deterioration patterns of nano‐SiO₂ modified aeolian sand concrete (NS‐ASC) under salt frost conditions. NS‐ASC was prepared using at dosages 0%, 1%, 2%, 3%, and 4%, with 30% sand. The performance degradation resistance mechanisms were analyzed through compressive strength tests (macroscopic) microscopic (SEM NMR) before after freeze–thaw cycles (FTCs). Additionally, pore fractal dimension D ( min max ) different FTCs derived from NMR results. A model developed to predict conditions, NS dosage as variables. results indicated that gradually declined increasing FTCs. After 200 FTCs, ANS‐1, ANS‐2, ANS‐3, ANS‐4 exhibited increases 31.1%, 36.92%, 105.49%, 82.32%, respectively, demonstrating improved compared ASC without NS. incorporation effectively filled ASC's internal pores, reducing damage. Moreover, showed a gradual decline reflecting progressive disruption structure due frost. evolved complex simpler, small pores transforming into larger ones. increased . based on contribution rate described variation in environments. provides theoretical foundation for analyzing damage

Language: Английский

Citations

0
Salt-frost damage characterization of simulant multiple ITZs in nano-silica modified recycled aggregate concrete DOI
Hongrui Zhang,

Haidong Xu,

Jiuwen Bao

et al.

Materials Today Communications, Journal Year: 2024, Volume and Issue: 41, P. 110296 - 110296

Published: Sept. 4, 2024

Language: Английский

Citations

3
Tensile performance of pre-cracked UHPC under the coupled actions of sustained loading and corrosive media DOI
Yiming Yao,

Gan Wu,

Kaimeng Yang

et al.

Cement and Concrete Composites, Journal Year: 2024, Volume and Issue: unknown, P. 105915 - 105915

Published: Dec. 1, 2024

Language: Английский

Citations

0