Assessment of Precast Concrete Deterioration in Marine Environments Using Non-Destructive Methods DOI Creative Commons

Tarek Ibrahim Selouma,

Walid Fouad Edris,

Abd Al-Kader A. Al Sayed

et al.

Buildings, Journal Year: 2025, Volume and Issue: 15(6), P. 926 - 926

Published: March 15, 2025

Concrete structures in marine environments face significant degradation due to reinforcement corrosion caused by chloride ingress and sulfate attack. Poor construction quality, inadequate standards, suboptimal design can further accelerate deterioration. Non-destructive testing (NDT) has proven valuable for durability assessment, yet its application remains limited the complex microstructural characteristics of concrete. This study establishes a comprehensive procedure evaluating precast concrete using multiple characterization techniques. Two elements with different cement types, CEM II A-L 42.5R I 42.5 R/SR, were analyzed through compressive strength tests, open porosity measurements, mercury intrusion porosimetry (MIP), ultrasonic wave transmission, scanning electron microscopy (SEM). The results indicate that R/SR exhibits superior lower porosity, making it more durable suitable load-bearing applications. Higher pulse velocity (UPV) confirms resilience. In contrast, shows mechanical performance greater susceptibility marine-induced degradation. Over time, pore size distribution shifts, potentially compromising integrity. SEM analysis reveals gypsum brucite formation degraded regions, demonstrating changes seawater exposure. A strong negative correlation between UPV underscores detrimental effect increased on material density structural stability. highlights effectiveness as reliable NDT techniques assessing trends suggests serves an early indicator loss, enabling timely maintenance interventions. These findings provide insights into selection enhanced emphasize role long-term health monitoring.

Language: Английский

Assessment of Precast Concrete Deterioration in Marine Environments Using Non-Destructive Methods DOI Creative Commons

Tarek Ibrahim Selouma,

Walid Fouad Edris,

Abd Al-Kader A. Al Sayed

et al.

Buildings, Journal Year: 2025, Volume and Issue: 15(6), P. 926 - 926

Published: March 15, 2025

Concrete structures in marine environments face significant degradation due to reinforcement corrosion caused by chloride ingress and sulfate attack. Poor construction quality, inadequate standards, suboptimal design can further accelerate deterioration. Non-destructive testing (NDT) has proven valuable for durability assessment, yet its application remains limited the complex microstructural characteristics of concrete. This study establishes a comprehensive procedure evaluating precast concrete using multiple characterization techniques. Two elements with different cement types, CEM II A-L 42.5R I 42.5 R/SR, were analyzed through compressive strength tests, open porosity measurements, mercury intrusion porosimetry (MIP), ultrasonic wave transmission, scanning electron microscopy (SEM). The results indicate that R/SR exhibits superior lower porosity, making it more durable suitable load-bearing applications. Higher pulse velocity (UPV) confirms resilience. In contrast, shows mechanical performance greater susceptibility marine-induced degradation. Over time, pore size distribution shifts, potentially compromising integrity. SEM analysis reveals gypsum brucite formation degraded regions, demonstrating changes seawater exposure. A strong negative correlation between UPV underscores detrimental effect increased on material density structural stability. highlights effectiveness as reliable NDT techniques assessing trends suggests serves an early indicator loss, enabling timely maintenance interventions. These findings provide insights into selection enhanced emphasize role long-term health monitoring.

Language: Английский

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