Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Moisture-Insensitive Procedure for Determining the Air Void Distribution in Concrete
https://orcid.org/0000-0002-2538-4018
An infrared thermography (IRT) based procedure, that relies on detecting temperature differences due to air voids, is developed to detect improperly compacted concrete. Unlike previous attempts to detect isolated delaminations, the object of the present work is to reconstruct the random void distribution inside concrete. A correlation function of thermal contrast-based approach is adopted. However, the basic method is shown to have several limitations. Enhancements are proposed which use a combination of techniques to remove background noise and improve the thermal contrast. The enhanced method is tested on laboratory specimens. The void distributions obtained are compared with those obtained from micro x-ray computed tomography (CT) scans of the specimens. The algorithm is further validated using the results of finite element simulations of concrete specimens with synthetic void distributions. It is found capable of distinguishing air voids from moisture-filled areas, thereby adding to its usefulness.
Moisture-Insensitive Procedure for Determining the Air Void Distribution in Concrete
https://orcid.org/0000-0002-2538-4018
An infrared thermography (IRT) based procedure, that relies on detecting temperature differences due to air voids, is developed to detect improperly compacted concrete. Unlike previous attempts to detect isolated delaminations, the object of the present work is to reconstruct the random void distribution inside concrete. A correlation function of thermal contrast-based approach is adopted. However, the basic method is shown to have several limitations. Enhancements are proposed which use a combination of techniques to remove background noise and improve the thermal contrast. The enhanced method is tested on laboratory specimens. The void distributions obtained are compared with those obtained from micro x-ray computed tomography (CT) scans of the specimens. The algorithm is further validated using the results of finite element simulations of concrete specimens with synthetic void distributions. It is found capable of distinguishing air voids from moisture-filled areas, thereby adding to its usefulness.
Moisture-Insensitive Procedure for Determining the Air Void Distribution in Concrete
https://orcid.org/0000-0002-2538-4018
An infrared thermography (IRT) based procedure, that relies on detecting temperature differences due to air voids, is developed to detect improperly compacted concrete. Unlike previous attempts to detect isolated delaminations, the object of the present work is to reconstruct the random void distribution inside concrete. A correlation function of thermal contrast-based approach is adopted. However, the basic method is shown to have several limitations. Enhancements are proposed which use a combination of techniques to remove background noise and improve the thermal contrast. The enhanced method is tested on laboratory specimens. The void distributions obtained are compared with those obtained from micro x-ray computed tomography (CT) scans of the specimens. The algorithm is further validated using the results of finite element simulations of concrete specimens with synthetic void distributions. It is found capable of distinguishing air voids from moisture-filled areas, thereby adding to its usefulness.
Moisture-Insensitive Procedure for Determining the Air Void Distribution in Concrete
J. Mater. Civ. Eng.
Chatterjee, Shaunak (Autor:in) / Deb, Arghya (Autor:in)
01.01.2025
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Determining the air-void distribution in fresh concrete with the Sequential Air Method
| British Library Online Contents | 2017
Determining the air-void distribution in fresh concrete with the Sequential Air Method
| British Library Online Contents | 2017
Determining the air-void distribution in fresh concrete with the Sequential Air Method
| British Library Online Contents | 2017
Moisture-insensitive epoxies fight erosion
Tema Archiv | 1974
Determining the air-void distribution in fresh concrete with the Sequential Air Method
| Online Contents | 2017