Air void analysis of hardened concrete by means of photogrammetry

Sofie Wolter, Frederik Alexander Hvelplund Uhre, Marianne Tange Hasholt*, Vedrana Andersen Dahl, François Anton

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The present study investigates the use of close-range photogrammetry for automated air void analysis of hardened concrete without contrast enhancement. First, polished plane sections of concrete with varying air contents were analyzed by photogrammetry. The data in the form of point clouds were processed to identify the air voids. Second, the same plane sections were subjected to traditional air void analysis by contrast enhancement. Results of both methods were compared. The method based on photogrammetry showed potential, but it could not capture the smallest air voids. Better camera resolution and/or methods to reduce noise in the point cloud are needed.
Original languageEnglish
JournalConstruction and Building Materials
Volume226
Pages (from-to)953-964
ISSN0950-0618
DOIs
Publication statusPublished - 2019

Keywords

  • Concrete
  • Air void analysis
  • Photogrammetry
  • Image analysis

Cite this

Wolter, Sofie ; Uhre, Frederik Alexander Hvelplund ; Hasholt, Marianne Tange ; Dahl, Vedrana Andersen ; Anton, François. / Air void analysis of hardened concrete by means of photogrammetry. In: Construction and Building Materials. 2019 ; Vol. 226. pp. 953-964.
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abstract = "The present study investigates the use of close-range photogrammetry for automated air void analysis of hardened concrete without contrast enhancement. First, polished plane sections of concrete with varying air contents were analyzed by photogrammetry. The data in the form of point clouds were processed to identify the air voids. Second, the same plane sections were subjected to traditional air void analysis by contrast enhancement. Results of both methods were compared. The method based on photogrammetry showed potential, but it could not capture the smallest air voids. Better camera resolution and/or methods to reduce noise in the point cloud are needed.",
keywords = "Concrete, Air void analysis, Photogrammetry, Image analysis",
author = "Sofie Wolter and Uhre, {Frederik Alexander Hvelplund} and Hasholt, {Marianne Tange} and Dahl, {Vedrana Andersen} and Fran{\cc}ois Anton",
year = "2019",
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pages = "953--964",
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Air void analysis of hardened concrete by means of photogrammetry. / Wolter, Sofie; Uhre, Frederik Alexander Hvelplund; Hasholt, Marianne Tange; Dahl, Vedrana Andersen; Anton, François.

In: Construction and Building Materials, Vol. 226, 2019, p. 953-964.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Air void analysis of hardened concrete by means of photogrammetry

AU - Wolter, Sofie

AU - Uhre, Frederik Alexander Hvelplund

AU - Hasholt, Marianne Tange

AU - Dahl, Vedrana Andersen

AU - Anton, François

PY - 2019

Y1 - 2019

N2 - The present study investigates the use of close-range photogrammetry for automated air void analysis of hardened concrete without contrast enhancement. First, polished plane sections of concrete with varying air contents were analyzed by photogrammetry. The data in the form of point clouds were processed to identify the air voids. Second, the same plane sections were subjected to traditional air void analysis by contrast enhancement. Results of both methods were compared. The method based on photogrammetry showed potential, but it could not capture the smallest air voids. Better camera resolution and/or methods to reduce noise in the point cloud are needed.

AB - The present study investigates the use of close-range photogrammetry for automated air void analysis of hardened concrete without contrast enhancement. First, polished plane sections of concrete with varying air contents were analyzed by photogrammetry. The data in the form of point clouds were processed to identify the air voids. Second, the same plane sections were subjected to traditional air void analysis by contrast enhancement. Results of both methods were compared. The method based on photogrammetry showed potential, but it could not capture the smallest air voids. Better camera resolution and/or methods to reduce noise in the point cloud are needed.

KW - Concrete

KW - Air void analysis

KW - Photogrammetry

KW - Image analysis

U2 - 10.1016/j.conbuildmat.2019.07.203

DO - 10.1016/j.conbuildmat.2019.07.203

M3 - Journal article

VL - 226

SP - 953

EP - 964

JO - Construction and Building Materials

JF - Construction and Building Materials

SN - 0950-0618

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