Performance and Life Prediction of Recycled Concrete Against Sulfate Dry–Wet Cycle Corrosion DOI Open Access
Liangliang Chen, Fufei Wu, Dong Liu

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(10), P. 2201 - 2201

Published: May 10, 2025

To investigate the sulfate resistance of recycled concrete with composite admixtures under dry–wet cycling, a single-factor experimental design was first conducted to study deterioration patterns single and (ground granulated blast furnace slag (GGBS) fly ash) attack. Based on test results, orthogonal experiments were designed as one influencing factor. Quantitative analysis performed determine impact magnitude significance various factors at different corrosion ages. A damage model for cycling established preliminary service life prediction. The results indicated that performance followed sequence > admixture ash admixture. When uncycled (0 cycles), influence ranking B (water–binder ratio) (recycled coarse aggregate replacement rate) C (GGBS + content). After 60 120 cycles, became A. For compressive strength regression model, measured values deviated significantly from calculated (−6.88% 16.66%), while dynamic elastic modulus showed good agreement between (−2.86% 4.87%). three-indicator lifespan prediction equation established. Using practical engineering parameters (30% replacement, 0.4 water–binder ratio, 20% content), predicted this project T = 117 years. Therefore, incorporating can effectively improve weak zones in enhance its durability.

Language: Английский

Advanced in-situ 4D CT reconstruction for exploring fiber distribution effects on the mechanical behaviors and interface optimization of carbonated high-toughness recycled aggregate concrete DOI
Changqing Wang,

Jiayu Yuan,

Youchao Zhang

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 473, P. 140941 - 140941

Published: March 29, 2025

Language: Английский

Citations

3
Experimental investigation of the acoustic emission and energy evolution of bedded coal under uniaxial compression DOI Creative Commons

Zhang Guo-ning,

Yongjiang Yu, Wei Zhang

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 12, 2025

Language: Английский

Citations

0
Shear characteristics and damage mechanisms of the bolt–grout interface under cyclic shear loading DOI

Sunhao Zhang,

Yujing Jiang, Hanfang Zheng

et al.

Computational Particle Mechanics, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Language: Английский

Citations

0
Research on the performance and application of nano-MgO modified ultrafine cement-based sealing materials DOI Creative Commons
Jiajia Zhao, Shixiang Tian, Cheng Chen

et al.

Case Studies in Construction Materials, Journal Year: 2025, Volume and Issue: unknown, P. e04694 - e04694

Published: April 1, 2025

Language: Английский

Citations

0
Study on the transient structure and acoustic emission characteristics of gas pipeline leakage holes at leakage instant DOI

Fei Tang,

Yueping Qin, Peng Wang

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(3)

Published: March 1, 2025

Pipeline plays an important role in the process of natural gas transportation, and pipeline leakage is related to energy, environmental protection, security issues. The transient structure sound source signal characteristics are key accurate detection location holes pipelines. A fluid-structure coupling model established this paper. effects different pipe pressure apertures on structural parameters such as flow rate, stress, displacement hole studied. change acoustic emission at moment analyzed by fast Fourier transformation. results indicate that distribution line near leak becomes more disordered with increase aperture. rate increases pressure. stress distributed a cross shape, increasing decreasing total around “8”-shaped distribution, which aperture, maximum located side pipeline. frequency value 1 kHz. radial amplitude largest, its main 1–5 This study provides theoretical basis for identification instantaneous signals.

Language: Английский

Citations

0
Performance and Life Prediction of Recycled Concrete Against Sulfate Dry–Wet Cycle Corrosion DOI Open Access
Liangliang Chen, Fufei Wu, Dong Liu

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(10), P. 2201 - 2201

Published: May 10, 2025

To investigate the sulfate resistance of recycled concrete with composite admixtures under dry–wet cycling, a single-factor experimental design was first conducted to study deterioration patterns single and (ground granulated blast furnace slag (GGBS) fly ash) attack. Based on test results, orthogonal experiments were designed as one influencing factor. Quantitative analysis performed determine impact magnitude significance various factors at different corrosion ages. A damage model for cycling established preliminary service life prediction. The results indicated that performance followed sequence > admixture ash admixture. When uncycled (0 cycles), influence ranking B (water–binder ratio) (recycled coarse aggregate replacement rate) C (GGBS + content). After 60 120 cycles, became A. For compressive strength regression model, measured values deviated significantly from calculated (−6.88% 16.66%), while dynamic elastic modulus showed good agreement between (−2.86% 4.87%). three-indicator lifespan prediction equation established. Using practical engineering parameters (30% replacement, 0.4 water–binder ratio, 20% content), predicted this project T = 117 years. Therefore, incorporating can effectively improve weak zones in enhance its durability.

Language: Английский

Citations

0