Evaluation of Condition of Concrete Structures Using Ultrasonic Pulse Velocity Method

Hong, Seong-Uk; Yoon, Sangki; Kim, Jong-Hyun; Lee, Changjong; Kim, Seunghun; Lee, Yongtaeg

doi:10.3390/app10020706

Cited by 47 publications

(27 citation statements)

References 10 publications

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“…Another method to perform measurements at multiple depths is to use ultrasonic sensors to image the internal structure of concrete. Ultrasonic testing induces high frequency sound waves into the medium and measures reflected waves at the surface of the sensor [20][21][22]. This method has been used with multi-sensor arrangements.…”

Section: Ndt Methodsmentioning

confidence: 99%

Miniature Resistance Measurement Device for Structural Health Monitoring of Reinforced Concrete Infrastructure

Corva

Hosseini

Collins

et al. 2020

Sensors

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A vast amount of civil infrastructure is constructed using reinforced concrete, which can be susceptible to corrosion, posing significant risks. Corrosion of reinforced concrete has various causes, with chloride ingress known to be a major contributor. Monitoring this chloride ingress would allow for preventative maintenance to be less intrusive at a lower cost. Currently, chloride sensing methods are bulky and expensive, leaving the majority of concrete infrastructures unmonitored. This paper presents the design and fabrication of a miniature, low-cost device that can be embedded into concrete at various locations and depths. The device measures localized concrete resistance, correlating to the chloride ingress in the concrete using equations listed in this paper, and calculated results from two experiments are presented. The device benefits from a four-probe architecture, injecting a fixed frequency AC waveform across its outer electrodes within the cement block. Voltage across the internal electrodes is measured with a microcontroller and converted to a resistance value, communicated serially to an external computer. A final test showcases the ability of the device for three-dimensional mass deployment.

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Section: Ndt Methodsmentioning

confidence: 99%

Miniature Resistance Measurement Device for Structural Health Monitoring of Reinforced Concrete Infrastructure

Corva

Hosseini

Collins

et al. 2020

Sensors

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“…www.mdpi.com/journal/sensors The main methods to control the damage of rock mass are smooth blasting, presplitting blasting, shallow-hole weak blasting in the protective layer, mechanical crushing, and static crushing [6]. Smooth and presplitting blasting offer excellent results, but construction is complicated and inefficient.…”

Section: Research Backgroundmentioning

confidence: 99%

“…The most popular nondestructive testing techniques in blasting engineering are the ultrasonic-velocity method [6,7], ground-penetrating-radar (GPR) techniques [8,9], and impact-echo approaches [10]. Natural initial damage (microcracks and holes) in rock mass develops and extends until a crack develops under the blasting load.…”

Section: Damage Detection Of Rock and Concrete Materialsmentioning

confidence: 99%

Piezoceramic-Based Damage Monitoring of Concrete Structure for Underwater Blasting

Zhong

Xiong

2020

Sensors

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This paper developed a piezoelectric-transducer-based damage detection of concrete materials after blasting. Two specimens (with or without an energy-relieving structure) were subjected to a 40 m deep-underwater blasting load in an underwater-explosion vessel, and their damage was detected by a multifunctional piezoelectric-signal-monitoring and -analysis system before and after the explosion. Statistical-data analysis of the piezoelectric signals revealed four zones: crushing, fracture, damage, and safe zones. The signal energy was analyzed and calculated by wavelet-packet analysis, and the blasting-damage index was obtained after the concrete specimen was subjected to the impact load of the underwater explosion. The damage of the two specimens gradually decreased from the blast hole to the bottom of the specimen. The damage index of the specimen with the energy-relieving structure differed for the fracture area and the damage area, and the damage protection of the energy-relieving structure was prominent at the bottom of the specimen. The piezoelectric-transducer-based damage monitoring of concrete materials is sensitive to underwater blasting, and with wavelet-packet-energy analysis, it can be used for postblasting damage detection and the evaluation of concrete materials.

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“…It was also concluded from the study that UPV depends on both the apparent density and total voids content in cement-based building materials. Other studies have used UPV in evaluating the compressive strength of concrete structures that are in early stages and in very old age [ 11 , 12 ]. The study by Hong et al [ 11 ] correlated the UPV with the compressive strength according to the age.…”

Section: Introductionmentioning

confidence: 99%

“…Other studies have used UPV in evaluating the compressive strength of concrete structures that are in early stages and in very old age [ 11 , 12 ]. The study by Hong et al [ 11 ] correlated the UPV with the compressive strength according to the age. This way, compressive strength of concrete at early stage can be estimated by UPV that may help quality control and quality assurance of concrete during construction.…”

Section: Introductionmentioning

confidence: 99%

Effects of Saturation Levels on the Ultrasonic Pulse Velocities and Mechanical Properties of Concrete

et al. 2020

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The main objective of this research is to investigate the effect of water content in concrete on the velocities of ultrasonic waves (P- and S-waves) and mechanical properties (elastic modulus and compressive strength) of concrete. For this study, concrete specimens (100 mm × 200 mm cylinders) were fabricated with three different water-to-binder ratios (0.52, 0.35, and 0.26). These cylinders were then submerged in water to be saturated in different degrees from 25% to 100% with an interval of 25% saturation. Another set of cylinders was also oven-dried to represent the dry condition. The dynamic properties of concrete were then assessed using a measurement of elastic wave accordance with ASTM C597-16 and using resonance tests following ASTM C215-19, before and after immersion in water. The static properties of saturated concrete were also assessed by the uniaxial compressive testing according to ASTM C39/C39M-20 and ASTM C469/C469M-14. It was observed that the saturation level of concrete affected the two ultrasonic wave velocities and the two static mechanical properties of concrete in various ways. The relationship between P-wave velocity and compressive strength of concrete was highly sensitive to saturation condition of concrete. In contrast, S-wave velocity of concrete was closely correlated with compressive strength of concrete, which was much less sensitive to water saturation level compared to P-wave velocity of concrete. Finally, it was noticed that water saturation condition only little affects the relationship between the dynamic and elastic moduli of elasticity of concrete studies in this study.

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Evaluation of Condition of Concrete Structures Using Ultrasonic Pulse Velocity Method

Cited by 47 publications

References 10 publications

Miniature Resistance Measurement Device for Structural Health Monitoring of Reinforced Concrete Infrastructure

Miniature Resistance Measurement Device for Structural Health Monitoring of Reinforced Concrete Infrastructure

Piezoceramic-Based Damage Monitoring of Concrete Structure for Underwater Blasting

Effects of Saturation Levels on the Ultrasonic Pulse Velocities and Mechanical Properties of Concrete

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