Detecting the Activation of a Self-Healing Mechanism in Concrete by Acoustic Emission and Digital Image Correlation
Autonomous crack healing in concrete is obtained when encapsulated healing agent is embedded into the material. Cracking damage in concrete elements ruptures the capsules and activates the healing process by healing agent release. Previously, the strength and stiffness recovery as well as the sealin...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2013-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2013/424560 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841524431798665216 |
|---|---|
| author | E. Tsangouri D. G. Aggelis K. Van Tittelboom N. De Belie D. Van Hemelrijck |
| author_facet | E. Tsangouri D. G. Aggelis K. Van Tittelboom N. De Belie D. Van Hemelrijck |
| author_sort | E. Tsangouri |
| collection | DOAJ |
| description | Autonomous crack healing in concrete is obtained when encapsulated healing agent is embedded into the material. Cracking damage in concrete elements ruptures the capsules and activates the healing process by healing agent release. Previously, the strength and stiffness recovery as well as the sealing efficiency after autonomous crack repair was well established. However, the mechanisms that trigger capsule breakage remain unknown. In parallel, the conditions under which the crack interacts with embedded capsules stay black-box. In this research, an experimental approach implementing an advanced optical and acoustic method sets up scopes to monitor and justify the crack formation and capsule breakage of concrete samples tested under three-point bending. Digital Image Correlation was used to visualize the crack opening. The optical information was the basis for an extensive and analytical study of the damage by Acoustic Emission analysis. The influence of embedding capsules on the concrete fracture process, the location of capsule damage, and the differentiation between emissions due to capsule rupture and crack formation are presented in this research. A profound observation of the capsules performance provides a clear view of the healing activation process. |
| format | Article |
| id | doaj-art-0ef52ea10b2d4d06948bafd3927a2852 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-0ef52ea10b2d4d06948bafd3927a28522025-02-03T05:53:12ZengWileyThe Scientific World Journal1537-744X2013-01-01201310.1155/2013/424560424560Detecting the Activation of a Self-Healing Mechanism in Concrete by Acoustic Emission and Digital Image CorrelationE. Tsangouri0D. G. Aggelis1K. Van Tittelboom2N. De Belie3D. Van Hemelrijck4Department of Mechanics of Materials and Constructions, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, BelgiumDepartment of Mechanics of Materials and Constructions, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, BelgiumMagnel Laboratory for Concrete Research, Department of Structural Engineering, Faculty of Engineering, Ghent University, Technologiepark Zwijnaarde 904, 9052 Ghent, BelgiumMagnel Laboratory for Concrete Research, Department of Structural Engineering, Faculty of Engineering, Ghent University, Technologiepark Zwijnaarde 904, 9052 Ghent, BelgiumDepartment of Mechanics of Materials and Constructions, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, BelgiumAutonomous crack healing in concrete is obtained when encapsulated healing agent is embedded into the material. Cracking damage in concrete elements ruptures the capsules and activates the healing process by healing agent release. Previously, the strength and stiffness recovery as well as the sealing efficiency after autonomous crack repair was well established. However, the mechanisms that trigger capsule breakage remain unknown. In parallel, the conditions under which the crack interacts with embedded capsules stay black-box. In this research, an experimental approach implementing an advanced optical and acoustic method sets up scopes to monitor and justify the crack formation and capsule breakage of concrete samples tested under three-point bending. Digital Image Correlation was used to visualize the crack opening. The optical information was the basis for an extensive and analytical study of the damage by Acoustic Emission analysis. The influence of embedding capsules on the concrete fracture process, the location of capsule damage, and the differentiation between emissions due to capsule rupture and crack formation are presented in this research. A profound observation of the capsules performance provides a clear view of the healing activation process.http://dx.doi.org/10.1155/2013/424560 |
| spellingShingle | E. Tsangouri D. G. Aggelis K. Van Tittelboom N. De Belie D. Van Hemelrijck Detecting the Activation of a Self-Healing Mechanism in Concrete by Acoustic Emission and Digital Image Correlation The Scientific World Journal |
| title | Detecting the Activation of a Self-Healing Mechanism in Concrete by Acoustic Emission and Digital Image Correlation |
| title_full | Detecting the Activation of a Self-Healing Mechanism in Concrete by Acoustic Emission and Digital Image Correlation |
| title_fullStr | Detecting the Activation of a Self-Healing Mechanism in Concrete by Acoustic Emission and Digital Image Correlation |
| title_full_unstemmed | Detecting the Activation of a Self-Healing Mechanism in Concrete by Acoustic Emission and Digital Image Correlation |
| title_short | Detecting the Activation of a Self-Healing Mechanism in Concrete by Acoustic Emission and Digital Image Correlation |
| title_sort | detecting the activation of a self healing mechanism in concrete by acoustic emission and digital image correlation |
| url | http://dx.doi.org/10.1155/2013/424560 |
| work_keys_str_mv | AT etsangouri detectingtheactivationofaselfhealingmechanisminconcretebyacousticemissionanddigitalimagecorrelation AT dgaggelis detectingtheactivationofaselfhealingmechanisminconcretebyacousticemissionanddigitalimagecorrelation AT kvantittelboom detectingtheactivationofaselfhealingmechanisminconcretebyacousticemissionanddigitalimagecorrelation AT ndebelie detectingtheactivationofaselfhealingmechanisminconcretebyacousticemissionanddigitalimagecorrelation AT dvanhemelrijck detectingtheactivationofaselfhealingmechanisminconcretebyacousticemissionanddigitalimagecorrelation |