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Self-healing of cracks in concrete

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Abstract
Repair of cracks in concrete is an important issue as cracks may endanger durability and reduce service life of reinforced concrete structures; however, large costs are generally involved if cracks are to be repaired and sometimes repair is even impossible due to inaccessibility. Therefore, in this project, we attempt to heal cracks autonomously by embedding an encapsulated healing agent into the matrix. Water sorption measurements demonstrated there is no significant difference between the efficiency of manual and autonomous crack repair. The self-healing efficiency was also proven through visualization of the water flow by means of neutron radiography. It was shown that manually and autonomously healed cracks were water tight as no water ingress into the crack was noticed. For untreated cracks fast ingress of water was noticed along the length of the crack.
Keywords
water sorption, neutron radiography, autonomous crack healing, cementitious materials

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Citation

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

Chicago
Van Tittelboom, Kim, Nele De Belie, P Zhang, and FH Wittmann. 2011. “Self-healing of Cracks in Concrete.” In Basic Research on Concrete and Applications, ed. Folker H Wittmann and Olivier Mercier, 303–314. Freiburg, Germany: Aedificatio Publishers.
APA
Van Tittelboom, K., De Belie, N., Zhang, P., & Wittmann, F. (2011). Self-healing of cracks in concrete. In F. H. Wittmann & O. Mercier (Eds.), Basic research on concrete and applications (pp. 303–314). Presented at the International Workshop “Basic Research on Concrete and Applications” (ASMES - 2011), Freiburg, Germany: Aedificatio Publishers.
Vancouver
1.
Van Tittelboom K, De Belie N, Zhang P, Wittmann F. Self-healing of cracks in concrete. In: Wittmann FH, Mercier O, editors. Basic research on concrete and applications. Freiburg, Germany: Aedificatio Publishers; 2011. p. 303–14.
MLA
Van Tittelboom, Kim, Nele De Belie, P Zhang, et al. “Self-healing of Cracks in Concrete.” Basic Research on Concrete and Applications. Ed. Folker H Wittmann & Olivier Mercier. Freiburg, Germany: Aedificatio Publishers, 2011. 303–314. Print.
@inproceedings{2131360,
  abstract     = {Repair of cracks in concrete is an important issue as cracks may endanger durability and reduce service life of reinforced concrete structures; however, large costs are generally involved if cracks are to be repaired and sometimes repair is even impossible due to inaccessibility. Therefore, in this project, we attempt to heal cracks autonomously by embedding an encapsulated healing agent into the matrix. Water sorption measurements demonstrated there is no significant difference between the efficiency of manual and autonomous crack repair. The self-healing efficiency was also proven through visualization of the water flow by means of neutron radiography. It was shown that manually and autonomously healed cracks were water tight as no water ingress into the crack was noticed. For untreated cracks fast ingress of water was noticed along the length of the crack.},
  author       = {Van Tittelboom, Kim and De Belie, Nele and Zhang, P and Wittmann, FH},
  booktitle    = {Basic research on concrete and applications},
  editor       = {Wittmann, Folker H and Mercier, Olivier},
  isbn         = {9783942052009},
  keyword      = {water sorption,neutron radiography,autonomous crack healing,cementitious materials},
  language     = {eng},
  location     = {Lausanne, Switzerland},
  pages        = {303--314},
  publisher    = {Aedificatio Publishers},
  title        = {Self-healing of cracks in concrete},
  url          = {http://books.google.be/books/about/Basic\_Research\_on\_Concrete\_and\_Applicati.html?id=uOgiuAAACAAJ\&redir\_esc=y},
  year         = {2011},
}