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Concrete bridge deck assessment: Relationship between GPR data and concrete removal depth measurements collected after hydrodemolition

Varnavina, Aleksandra V. / Khamzin, Aleksey K. / Sneed, Lesley H. / Torgashov, Evgeniy V. / Anderson, Neil L. / Maerz, Norbert H. / Boyko, Kenneth J.

Highlights • Ground-coupled GPR was used to assess the condition of two concrete bridge decks. • Each bridge deck was rehabilitated using hydrodemolition. • LiDAR mappings of the surface before and after rehabilitation were compared. • A relationship between GPR reflection magnitude and concrete removal depth was developed.

Abstract A ground-coupled ground penetrating radar (GPR) system was used to assess the condition of two reinforced concrete bridge decks. After each GPR assessment was completed, the bridge deck was rehabilitated using a hydrodemolition process to remove deteriorated concrete from upper surface of the deck. LiDAR technology was used to create maps depicting the deck surface before and after the concrete removal. The objective of this work was to corroborate the GPR condition assessments by comparing the spatial distribution of the GPR and LiDAR mappings. This work illustrates that GPR data have the potential to predict concrete repair estimates.

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Concrete bridge deck assessment: Relationship between GPR data and concrete removal depth measurements collected after hydrodemolition

Varnavina, Aleksandra V. / Khamzin, Aleksey K. / Sneed, Lesley H. / Torgashov, Evgeniy V. / Anderson, Neil L. / Maerz, Norbert H. / Boyko, Kenneth J.

Highlights • Ground-coupled GPR was used to assess the condition of two concrete bridge decks. • Each bridge deck was rehabilitated using hydrodemolition. • LiDAR mappings of the surface before and after rehabilitation were compared. • A relationship between GPR reflection magnitude and concrete removal depth was developed.

Abstract A ground-coupled ground penetrating radar (GPR) system was used to assess the condition of two reinforced concrete bridge decks. After each GPR assessment was completed, the bridge deck was rehabilitated using a hydrodemolition process to remove deteriorated concrete from upper surface of the deck. LiDAR technology was used to create maps depicting the deck surface before and after the concrete removal. The objective of this work was to corroborate the GPR condition assessments by comparing the spatial distribution of the GPR and LiDAR mappings. This work illustrates that GPR data have the potential to predict concrete repair estimates.

Concrete bridge deck assessment: Relationship between GPR data and concrete removal depth measurements collected after hydrodemolition

Varnavina, Aleksandra V. / Khamzin, Aleksey K. / Sneed, Lesley H. / Torgashov, Evgeniy V. / Anderson, Neil L. / Maerz, Norbert H. / Boyko, Kenneth J.

Highlights • Ground-coupled GPR was used to assess the condition of two concrete bridge decks. • Each bridge deck was rehabilitated using hydrodemolition. • LiDAR mappings of the surface before and after rehabilitation were compared. • A relationship between GPR reflection magnitude and concrete removal depth was developed.

Abstract A ground-coupled ground penetrating radar (GPR) system was used to assess the condition of two reinforced concrete bridge decks. After each GPR assessment was completed, the bridge deck was rehabilitated using a hydrodemolition process to remove deteriorated concrete from upper surface of the deck. LiDAR technology was used to create maps depicting the deck surface before and after the concrete removal. The objective of this work was to corroborate the GPR condition assessments by comparing the spatial distribution of the GPR and LiDAR mappings. This work illustrates that GPR data have the potential to predict concrete repair estimates.

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Title:

Concrete bridge deck assessment: Relationship between GPR data and concrete removal depth measurements collected after hydrodemolition

Contributors:

Varnavina, Aleksandra V. (author) / Khamzin, Aleksey K. (author) / Sneed, Lesley H. (author) / Torgashov, Evgeniy V. (author) / Anderson, Neil L. (author) / Maerz, Norbert H. (author) / Boyko, Kenneth J. (author)

Published in:

Construction and Building Materials ; 99 ; 26-38

Publication date:

2015-09-08

Size:

13 pages

ISSN:

DOI:

https://doi.org/10.1016/j.conbuildmat.2015.09.008

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Ground penetrating radar , Bridge deck , Hydrodemolition , LiDAR , Repair estimates

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