Article
Construction & Building Technology
Yuma Kawasaki, Shinya Fukui, Tomoko Fukuyama
Summary: Rebar corrosion in concrete was evaluated using an electrical corrosion test and non-destructive evaluation techniques. The results showed that acoustic emission and electrochemical noise analysis can be used to assess early-stage rebar corrosion.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Multidisciplinary Sciences
Fan-xiu Chen, Yi-chen Zhong, Xin-ya Gao, Zu-quan Jin, En-dong Wang, Fei-peng Zhu, Xin-xing Shao, Xiao-yuan He
Summary: This study investigates the impact of rust expansion force due to corrosion on the durability of reinforced concrete structures by establishing a numerical model. The results show that the diameter of the steel bars and the thickness of the concrete cover can affect the magnitude of the rust expansion force.
SCIENTIFIC REPORTS
(2021)
Article
Construction & Building Technology
Lijie Chen, Ray Kai Leung Su
Summary: The geometry of rebars, such as rib shape and diameter, has significant effects on the steel-concrete interface. Corrosion initiation of vertical rebars is associated with interfacial porosity and the local water content near horizontal rebars is influenced by rebar diameter.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Engineering, Multidisciplinary
Charlotte Van Steen, Hussein Nasser, Els Verstrynge, Martine Wevers
Summary: Asset managers globally are facing challenges in managing aged infrastructure in reinforced concrete. Early detection of reinforcement corrosion is crucial for targeted maintenance and repair, with the acoustic emission technique showing promise in achieving this goal. The research in this article investigates the characterisation of different damage sources during corrosion in reinforced concrete, utilizing small-scale reinforced concrete prisms and accelerating conditions in a laboratory setting. Signals from various acoustic emission sources are analyzed in both the time and frequency domain, with the wavelet transform providing insights into time-frequency characteristics. The results highlight the importance of validating acoustic emission signals with crack measurements, with the shift in peak and center frequency proving to be a valuable indicator.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2022)
Article
Engineering, Civil
Eline Vandecruys, Menno van de Velde, Edwin Reynders, Geert Lombaert, Els Verstrynge
Summary: This paper presents an elaborate experimental study to effectively monitor chloride-induced corrosion damage in reinforced concrete beams. A combined method of acoustic emission sensing and vibration-based monitoring is developed to detect, characterise and localise damage. It was found that acoustic emission sensing can accurately detect and localise damage before cracking of the concrete, while vibration-based monitoring provides absolute information about the stiffness decrease due to corrosion damage.
ENGINEERING STRUCTURES
(2023)
Review
Engineering, Multidisciplinary
Liang Fan, Xianming Shi
Summary: Reinforcement corrosion is a major threat to the service life of RC structures, and various monitoring techniques have been categorized into five main types based on sensing principles and key characteristics. Future research should focus on aspects such as spatial resolution, sensor selection, and cost-efficiency.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Hyungrae Kim, Sungchul Yang, Takafumi Noguchi, Sangchun Yoon
Summary: This paper investigates the effects of local corrosion on the flexural performance of RC beams at different corrosion areas. Experimental tests were conducted on two series of RC beams with varying degrees of corrosion induced by local rebar corrosion. It was found that the strength capacity reduction followed the order of entire area > constant moment area > constant shear area as the average corrosion rate increased. The yield and ultimate strength remained nearly consistent until average corrosion rates of 10% and 15% respectively, beyond which they significantly dropped. Under cyclic loading condition, the structural capacity decreased further with increasing corrosion rate, accompanied by the development of longitudinal cracks.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Charlotte Van Steen, Els Verstrynge
Summary: In this study, a hierarchical clustering algorithm based on cross-correlation was developed to automatically distinguish damage sources during the corrosion process. The algorithm was verified and found to be successful in differentiating macro-cracking from corrosion and micro-cracking at the sample scale, offering potential for assessing the extent of corrosion-induced damage.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Civil
Paola Machado Barreto Manhaes, Jose Tavares Araruna Junior, Genda Chen, Neil Lennart Anderson, Andre Bezerra dos Santos
Summary: This study presents a case study of using ground penetrating radar to investigate rebar corrosion in a wastewater treatment plant in Brazil. The results show that electromagnetic waves and dielectric permittivity values can be used to monitor corrosion and suggest demolishing upper slabs while preserving lower slabs.
JOURNAL OF CIVIL STRUCTURAL HEALTH MONITORING
(2021)
Article
Chemistry, Physical
Mouhamadou Mountakhah Seye, Yuma Kawasaki, Ejazulhaq Rahimi
Summary: The acoustic emission (AE) technique was used to evaluate the fracture process of corroded and healthy reinforced concrete (RC) beams subjected to a bending test. The analysis of AE signals showed distinct mechanical behavior stages for different corrosion levels. Clustering based on AE signals enabled the classification of fractures into minor, medium, and major categories. The digital analysis method revealed the influence of preexisting corrosion-induced damages on the bending failure process of RC beams.
Article
Chemistry, Physical
JangHyun Park, MyeongGyu Jung
Summary: The addition of LiNO2 can improve the corrosion resistance of embedded rebars in concrete, increase the polarization resistance, and protect the rebars from deterioration.
Article
Construction & Building Technology
Haijun Zhou, Xuan Qi, Zhiyao Lin, Michele De Filippo, Jian Liu, Cong Ma, Feng Xing
Summary: An experimental study was conducted to investigate the combined effects of corrosion and fatigue loading on bond behaviors between strong confined rebar and concrete. Test results showed different failure modes and cumulative residual slip under different corrosion levels and stress levels. The findings provide reference for evaluating the service life of reinforced concrete structures in coastal areas under repeated loading.
STRUCTURAL CONCRETE
(2023)
Article
Construction & Building Technology
Haijun Zhou, Xuan Qi, Zhiyao Lin, Michele De Filippo, Jian Liu, Cong Ma, Feng Xing
Summary: This experimental study investigates the combined effects of corrosion and fatigue loading on bond behaviors between strong confined rebar and concrete. Test results show that corrosion and fatigue loading lead to a decrease in bond strength and an increase in slip value, potentially causing bond fatigue failure. The findings of this study are of significance for evaluating the service life of reinforced concrete structures in coastal areas under repeated loading.
STRUCTURAL CONCRETE
(2023)
Article
Construction & Building Technology
Bo Sun, Shenghua Ye, Tengfei Qiu, Chuanqing Fu, Dan Wu, Xianyu Jin
Summary: The study applies the Acoustic Emission (AE) technique to investigate the failure mode, damage evolution process, and cracking mechanism of reinforced concrete (RC) columns under the influence of external compression load and internal reinforcement corrosion. AE signals are collected from corroded and uncorroded RC column specimens at different loading stages, and parameter analyses are conducted to analyze the changing conditions of AE signals. Results reveal the time-variant rules of signal frequency and energy and provide insights into the damage evolution process of the RC structure. The corrosion behavior significantly affects the energy distributions, spectral characteristics, and damage evolution process of the RC columns.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Hammed O. Aminulai, Andrew F. Robinson, Neil S. Ferguson, Mohammed M. Kashani
Summary: This paper summarizes the results of an experimental investigation into ageing low-strength reinforced concrete columns with varying levels of confinement and corrosion. The study found that insufficient confinement and corrosion significantly affected the seismic performance and load-carrying capacity of the columns.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
