Inspection and Condition Assessment Using Ground Penetrating Radar

Chen, Dar Hao; Wimsatt, Andrew

doi:10.1061/(asce)gt.1943-5606.0000190

Cited by 40 publications

(17 citation statements)

References 5 publications

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“…The time delays and the amplitude of reflected signals are used to evaluate subsurface conditions. Objects or areas in the subsurface with different electrical properties will reflect the pulse differently and appear as anomalies (Chen & Wimsatt, 2009) (see Figure 5.8). The versatility of the method allows the tool to be operated from the road surface as well as inside a culvert as discussed above.…”

Section: Magnetic Flux Leakage (Mfl) This In-line Inspection (Ili) Tmentioning

confidence: 99%

Synthesis Study: Overview of Readily Available Culvert Inspection Technologies

Sheth¹,

Sinfield²

2019

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Section: Magnetic Flux Leakage (Mfl) This In-line Inspection (Ili) Tmentioning

confidence: 99%

Synthesis Study: Overview of Readily Available Culvert Inspection Technologies

Sheth¹,

Sinfield²

2019

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“…Ground penetrating radar (GPR) is another method to locate the rebars, voids, and other defects in concrete structures. Chen and Wimsatt (2010) [32] used 400 MHz ground-coupled penetrating radar (GCPR) to evaluate the subsurface conditions of roadway pavements. Yehia et al (2007) [33] studied the different NDE techniques used to assess the condition of concrete bridge deck.…”

Section: Brief Literature Reviewmentioning

confidence: 99%

Review of Nondestructive Testing Methods for Condition Monitoring of Concrete Structures

Verma

Bhadauria²,

Akhtar

2013

Journal of Construction Engineering

135

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The deterioration of concrete structures in the last few decades calls for effective methods for condition evaluation and maintenance. This resulted in development of several nondestructive testing (NDT) techniques for monitoring civil infrastructures. NDT methods have been used for more than three decades for monitoring concrete structures; now it has been recognized that NDT plays an important role in the condition monitoring of existing RC structures. NDT methods are known to be better to assess and evaluate the condition of RC structures practically. This paper reviewed several available NDT methods developed and used in the last few decades.

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“…e former does not need direct contact with the surface, while the latter requires full contact with the surface. Previously, ground-coupled GPR with a 400 MHz antenna was used to evaluate the subsurface condition of roadway pavements [8]. e investigation showed that the approach can be successfully used in finding anomalies and voids hidden under the pavement surface.…”

Section: Introductionmentioning

confidence: 99%

Nondestructive Evaluation of FRP‐Concrete Interface Bond due to Surface Defects

Yazdani

Beneberu²,

Riad³

2019

Advances in Civil Engineering

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Carbon fiber-reinforced polymer (CFRP) laminates have been successfully used as externally bonded reinforcements for retrofitting, strengthening, and confinement of concrete structures. The adequacy of the CFRP-concrete bonding largely depends on the bond quality and integrity. The bond quality may be compromised during the CFRP installation process due to various factors. In this study, the effect of four such construction-related factors was assessed through nondestructive evaluation (NDE) methods, and quantification of the levels of CFRP debonding was achieved. The factors were surface cleanliness, surface wetness, upward vs. downward application, and surface voids. A common unidirectional CFRP was applied to small-scale concrete samples with factorial combinations. Ground-penetrating radar and thermography NDE methods were applied to detect possible disbonds at CFRP-concrete interfaces. Thermography was found to clearly detect all four factors, while the GPR was only effective for detecting the surface voids only. The thermal images overpredicted the amount of debonded CFRP areas by about 25%, possibly due to scaling errors between the thermograph and the sample surface. The maximum debonded CFRP area in any sample was about two percent of the total CFRP area. This is a negligible amount of debonding, showing that the factors considered are unlikely to significantly affect the laminate performance or any CFRP contribution to the concrete member strength or confinement.

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Inspection and Condition Assessment Using Ground Penetrating Radar

Cited by 40 publications

References 5 publications

Synthesis Study: Overview of Readily Available Culvert Inspection Technologies

Synthesis Study: Overview of Readily Available Culvert Inspection Technologies

Review of Nondestructive Testing Methods for Condition Monitoring of Concrete Structures

Nondestructive Evaluation of FRP‐Concrete Interface Bond due to Surface Defects

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