Quantitative sensing of corroded steel rebar embedded in cement mortar specimens using ultrasonic testing

Twumasi, Jones Owusu; Le, Viet; Tang, Qixiang; Yu, Tzuyang

doi:10.1117/12.2218451

Cited by 2 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…97,98 Some researchers also develop annular-shaped ultrasonic transducers to easily fix them on steel rebar. 99,100 The transducers can be attached to the steel rebar and embedded inside the concrete to monitor steel rebar corrosion [100][101][102] and concrete cracking process, 103 respectively. A transducer and a sensor are attached to the steel rebar to monitor its corrosion.…”

Section: Ugw Techniquementioning

confidence: 99%

See 1 more Smart Citation

Techniques of corrosion monitoring of steel rebar in reinforced concrete structures: A review

Fan

Shi

2021

Structural Health Monitoring

View full text Add to dashboard Cite

Reinforcement corrosion is a major culprit that undermines the service life of reinforced concrete (RC) structures. It costs billions of dollars each year in the US alone and negatively impacts safety, reliability, resilience, and environmental performance of RC infrastructure. Corrosion monitoring of steel rebar is critical to provide early warning of deficiency, enable timely and effective maintenance strategies, and prevent catastrophes associated with premature failure of RC structures. To improve corrosion monitoring in the engineering practice, this work comprehensively reviews the state of the art of five major types of techniques, that is, electrochemical sensors, optical fiber sensors, sensors based on elastic wave methods, sensing based on electromagnetic methods, and untouched sensors. Each type of technique is systematically divided into sub-categories based on the sensing principle and key characteristics. For each sensor type, its maturity, application range, and the problems that hinder its application are discussed, aimed to provide guidance in selecting the appropriate sensors for specific engineering applications. This work concludes with an overview of opportunities and challenges, including the following six aspects for future research: spatial resolution, sensitivity, and measurement range; reliability and interpretation of the measurement; sensor selection based on three corrosion stages of steel rebar; long-term stability and service life; cost-efficiency of the sensing system; and monitoring of existing structure.

show abstract

Section: Ugw Techniquementioning

confidence: 99%

“…The transducers can be attached to the steel rebar and embedded inside the concrete to monitor steel rebar corrosion 100–102 and concrete cracking process, 103 respectively. A transducer and a sensor are attached to the steel rebar to monitor its corrosion.…”

Section: Sensors Based On Elastic Wave Techniquementioning

confidence: 99%

Techniques of corrosion monitoring of steel rebar in reinforced concrete structures: A review

Fan

Shi

2021

Structural Health Monitoring

View full text Add to dashboard Cite

show abstract

“…GPR results are influenced by the existence of voids and variable internal moisture conditions [25], which can confound interpretations in many ways, such as confusion with background structures, shadowing, or false identification of gaps or previously repaired sites as being corrosion sites (Type I errors) [4]. Half-cell potential surveys can only mark corrosion locations; they give no information about the corrosion extent [26]. Ultrasonic pulse velocity (UPV) or Schmidt hammer techniques assess the mechanical properties of concrete with no information directly related to rebar corrosion [27].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Real Defect Geometry and Its Detection Using Passive Magnetic Inspection (PMI) Method

2018

View full text Add to dashboard Cite

Reinforced concrete is the most commonly used material in urban, road, and industrial structures. Quantifying the condition of the reinforcing steel can help manage the human and financial risks that arise from unexpected reinforced concrete structure functional failure. Also, a quantitative time history of reinforcing steel condition can be used to make decisions on rehabilitation, decommissioning, or replacement. The self-magnetic behavior of ferromagnetic materials is useful for quantitative condition assessment. In this study, a ferromagnetic rebar with artificial defects was scanned by a three-dimensional (3D) laser scanner. The obtained point cloud was imported as a real geometry to a finite element software platform; its self-magnetic behavior was then simulated under the influence of Earth’s magnetic field. The various passive magnetic parameters that can be measured were reviewed for different conditions. Statistical studies showed that 0.76% of the simulation-obtained data of the rebar surface was related to the defect locations. Additionally, acceptable coincidences were confirmed between the magnetic properties from numerical simulation and from experimental outputs, most noticeably at hole locations.

show abstract

Quantitative sensing of corroded steel rebar embedded in cement mortar specimens using ultrasonic testing

Cited by 2 publications

References 12 publications

Techniques of corrosion monitoring of steel rebar in reinforced concrete structures: A review

Techniques of corrosion monitoring of steel rebar in reinforced concrete structures: A review

Simulation of Real Defect Geometry and Its Detection Using Passive Magnetic Inspection (PMI) Method

Contact Info

Product

Resources

About