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The effects of capsules on self-healing efficiency in cementitious materials

Haoliang Huang and Guang Ye UGent (2012) Microstructural-related Durability of Cementitious Composites, RILEM Proceedings PRO 83. p.1-10
abstract
Because self-healing of cracks is able to prolong the service life of concrete structures, it has attracted plenty of attention in these years. In this research, self-healing of cracks by further hydration of unhydrated cement particles was proposed. Encapsulated water was embedded in the cement paste to promote the further hydration. When the cement matrix cracks, the capsules are broken and the water stored in the capsules is released. The further hydration is promoted when the released water accesses to the unhydrated cement particles. The cracks are expected to be healed by the hydration products. Therefore, self-healing efficiency directly depends on the amount of released water, thus on the amount of capsules hit by the cracks. However, it is obvious that only some parts of capsules are hit by the crack when the matrix fractures. Because the amount of capsules hit by the cracks is related to the dosage of capsules mixed in the cement matrix, thus self-healing efficiency is regulated by the dosage and the size of capsules in the mixture. In order to realize the capacity of self-healing in practice, the effects of capsules on self-healing efficiency were investigated. The probability of a crack hitting capsules with a certain diameter was calculated by Monte Carlo simulations. Based on numerical studies, the self-healing efficiency as the function of the dosage of capsules was determined, taking into account the effects of the size of capsules.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
in
Microstructural-related Durability of Cementitious Composites, RILEM Proceedings PRO 83
editor
Guang Ye UGent, Klaas van Breugel, Wei Sun and Changwen Miao
pages
1 - 10
publisher
RILEM Publications
place of publication
Bagneux, France
conference name
2nd International Conference on Microstructural-related Durability of Cementitious Composites
conference location
Amsterdam, The Netherlands
conference start
2012-04-11
conference end
2012-04-13
ISBN
9782351581292
language
English
UGent publication?
yes
classification
C1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2106046
handle
http://hdl.handle.net/1854/LU-2106046
date created
2012-05-14 14:15:42
date last changed
2012-05-16 11:33:43
@inproceedings{2106046,
  abstract     = {Because self-healing of cracks is able to prolong the service life of concrete structures, it has attracted plenty of attention in these years. In this research, self-healing of cracks by further hydration of unhydrated cement particles was proposed. Encapsulated water was embedded in the cement paste to promote the further hydration. When the cement matrix cracks, the capsules are broken and the water stored in the capsules is released. The further hydration is promoted when the released water accesses to the unhydrated cement particles. The cracks are expected to be healed by the hydration products. Therefore, self-healing efficiency directly depends on the amount of released water, thus on the amount of capsules hit by the cracks. However, it is obvious that only some parts of capsules are hit by the crack when the matrix fractures. Because the amount of capsules hit by the cracks is related to the dosage of capsules mixed in the cement matrix, thus self-healing efficiency is regulated by the dosage and the size of capsules in the mixture. In order to realize the capacity of self-healing in practice, the effects of capsules on self-healing efficiency were investigated. The probability of a crack hitting capsules with a certain diameter was calculated by Monte Carlo simulations. Based on numerical studies, the self-healing efficiency as the function of the dosage of capsules was determined, taking into account the effects of the size of capsules.},
  author       = {Huang, Haoliang and Ye, Guang},
  booktitle    = {Microstructural-related Durability of Cementitious Composites, RILEM Proceedings PRO 83},
  editor       = {Ye, Guang and van Breugel, Klaas and Sun, Wei and Miao, Changwen},
  isbn         = {9782351581292},
  language     = {eng},
  location     = {Amsterdam, The Netherlands},
  pages        = {1--10},
  publisher    = {RILEM Publications},
  title        = {The effects of capsules on self-healing efficiency in cementitious materials},
  year         = {2012},
}

Chicago
Huang, Haoliang, and Guang Ye. 2012. “The Effects of Capsules on Self-healing Efficiency in Cementitious Materials.” In Microstructural-related Durability of Cementitious Composites, RILEM Proceedings PRO 83, ed. Guang Ye, Klaas van Breugel, Wei Sun, and Changwen Miao, 1–10. Bagneux, France: RILEM Publications.
APA
Huang, H., & Ye, G. (2012). The effects of capsules on self-healing efficiency in cementitious materials. In G. Ye, K. van Breugel, W. Sun, & C. Miao (Eds.), Microstructural-related Durability of Cementitious Composites, RILEM Proceedings PRO 83 (pp. 1–10). Presented at the 2nd International Conference on Microstructural-related Durability of Cementitious Composites, Bagneux, France: RILEM Publications.
Vancouver
1.
Huang H, Ye G. The effects of capsules on self-healing efficiency in cementitious materials. In: Ye G, van Breugel K, Sun W, Miao C, editors. Microstructural-related Durability of Cementitious Composites, RILEM Proceedings PRO 83. Bagneux, France: RILEM Publications; 2012. p. 1–10.
MLA
Huang, Haoliang, and Guang Ye. “The Effects of Capsules on Self-healing Efficiency in Cementitious Materials.” Microstructural-related Durability of Cementitious Composites, RILEM Proceedings PRO 83. Ed. Guang Ye et al. Bagneux, France: RILEM Publications, 2012. 1–10. Print.