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Evaluation of the efficiency of self-healing in concrete by means of µ-CT

Kim Van Tittelboom (UGent) , Denis Van Loo (UGent) , Nele De Belie (UGent) and Patric Jacobs (UGent)
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Abstract
It has been estimated that, in Europe, 50 % of the annual construction budget is spent on refurbishment and remediation of the existing structures. Therefore, self-healing of concrete structures, which are very sensitive to cracking, would be highly desirable. In this research, encapsulated healing agents were embedded in the concrete matrix in order to obtain self-healiing properties. Upon crack appearance, the capsules break and the healing agent is released, causing crack repair. It was found that more than 80 % of the original strength could be regained after self-healing. µ-CT was used as non-destructive test method, to visualize the interior of the beams after crack formation. It was shown that after breakage of the capsules, the glue was released from the tubes and sucked into the crack due to the capillary forces.
Keywords
cracks, self-healing, Concrete, computed tomography

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Please use this url to cite or link to this publication:

Chicago
Van Tittelboom, Kim, Denis Van Loo, Nele De Belie, and Patric Jacobs. 2010. “Evaluation of the Efficiency of Self-healing in Concrete by Means of µ-CT.” In Advances in Computed Tomography for Geomaterials : GeoX 2010, ed. Khalid A Alshibli and Allen H Reed, 133–139. London, UK ; New York, NY, USA: ISTE ; Wiley.
APA
Van Tittelboom, K., Van Loo, D., De Belie, N., & Jacobs, P. (2010). Evaluation of the efficiency of self-healing in concrete by means of µ-CT. In K. A. Alshibli & A. H. Reed (Eds.), Advances in Computed Tomography for Geomaterials : GeoX 2010 (pp. 133–139). Presented at the Advances in Computed Tomography for Geomaterials : GeoX 2010, London, UK ; New York, NY, USA: ISTE ; Wiley.
Vancouver
1.
Van Tittelboom K, Van Loo D, De Belie N, Jacobs P. Evaluation of the efficiency of self-healing in concrete by means of µ-CT. In: Alshibli KA, Reed AH, editors. Advances in Computed Tomography for Geomaterials : GeoX 2010. London, UK ; New York, NY, USA: ISTE ; Wiley; 2010. p. 133–9.
MLA
Van Tittelboom, Kim, Denis Van Loo, Nele De Belie, et al. “Evaluation of the Efficiency of Self-healing in Concrete by Means of µ-CT.” Advances in Computed Tomography for Geomaterials : GeoX 2010. Ed. Khalid A Alshibli & Allen H Reed. London, UK ; New York, NY, USA: ISTE ; Wiley, 2010. 133–139. Print.
@inproceedings{1847152,
  abstract     = {It has been estimated that, in Europe, 50 \% of the annual construction budget is spent on refurbishment and remediation of the existing structures. Therefore, self-healing of concrete structures, which are very sensitive to cracking, would be highly desirable. In this research, encapsulated healing agents were embedded in the concrete matrix in order to obtain self-healiing properties. Upon crack appearance, the capsules break and the healing agent is released, causing crack repair. It was found that more than 80 \% of the original strength could be regained after self-healing. {\textmu}-CT was used as non-destructive test method, to visualize the interior of the beams after crack formation. It was shown that after breakage of the capsules, the glue was released from the tubes and sucked into the crack due to the capillary forces.},
  author       = {Van Tittelboom, Kim and Van Loo, Denis and De Belie, Nele and Jacobs, Patric},
  booktitle    = {Advances in Computed Tomography for Geomaterials : GeoX 2010},
  editor       = {Alshibli, Khalid A and Reed, Allen H},
  isbn         = {9781848211797},
  keyword      = {cracks,self-healing,Concrete,computed tomography},
  language     = {eng},
  location     = {New Orleans, LA, USA},
  pages        = {133--139},
  publisher    = {ISTE ; Wiley},
  title        = {Evaluation of the efficiency of self-healing in concrete by means of {\textmu}-CT},
  year         = {2010},
}