GIMA ground penetrating radar system for monitoring concrete bridge decks

Huston, Dryver R.; Hu, Jing Qiong; Maser, Kenneth; Weedon, William H.; Adam, Chris

doi:10.1016/s0926-9851(99)00053-1

Cited by 46 publications

(16 citation statements)

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“…Regarding corrosion evaluation, radar applications often consist in detecting cracks or delaminations generated by the expansion of the corrosion products (Büyÿköztürk and Rhim, 1996;Halabe et al, 1996;Huston et al, 2000). The disadvantage of this approach is that it is effective only at an advanced stage of deterioration.…”

Section: Introductionmentioning

confidence: 99%

Using radar direct wave for concrete condition assessment: Correlation with electrical resistivity

Sbartaï

Laurens

Rhazi

et al. 2007

Journal of Applied Geophysics

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Section: Introductionmentioning

confidence: 99%

Using radar direct wave for concrete condition assessment: Correlation with electrical resistivity

Sbartaï

Laurens

Rhazi

et al. 2007

Journal of Applied Geophysics

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“…Th e G PR method is widely used in civil engineering to detect c r a c ks between concrete and steel [17][18][19][20][21][22][23][24][25][26][27][28][29]; in hydrogeology and sedimentology [13,[30][31][32]; in archelogy [33,34]; in agriculture for soil types [35]. Despite of the small depth of investigation of GPR, this nondestructive technique has become more popular in recent years for the evaluation of near surface structures through its simplicity and speed of implementation.…”

Section: Internal Structure Of the Dam From Geophysical Observation Gmentioning

confidence: 99%

Auscultation of a Dam for Mining Restoration in Quebec, Canada

Yaya¹,

Cheng²

2016

J Civil Environ Eng

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The tailing management is a long term concern for environment and social security. Following the discovery of a new gold mineralization, a mining company aims at reusing one of tailings storage facility at the mining site. However, there is a small treated water reservoir (polishing pond) downstream of the Northwest dam. It is therefore important to know the present state of the Northwest dam's internal structure. Geophysical methods of electrical resistivity and georadar were used for the auscultation of the Northwest dam. Numerical models were subsequently used to assess the geotechnical behavior of the dam in different deposition situations by simulating the restoration.The image processing results of georadar data show a layered structure near the surface. Changes in electrical resistivity offer deeper information than georadar. The lateral variability of the electrical resistivity corresponds to heterogeneity within each layer. As we cannot collect samples for the characterization of materials, the geophysical interpretation results help to estimate the compositional structure of the dam; ultimately it helps in numerical modeling on the safety factor estimation.

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“…Therefore, crack monitoring is important to guarantee the safety of structures. Currently, a number of techniques have been proposed for crack monitoring, such as ultrasonic method [1], acoustic emission [2], impact-echo [3], infrared thermograph [4], ground penetrating radar [5], etc. However, all have restrictions when applied in real projects.…”

Section: Introductionmentioning

confidence: 99%