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A review of self-healing concrete for damage management of structures

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Abstract
The increasing concern for safety and sustainability of structures is calling for the development of smart self-healing materials and preventive repair methods. The appearance of small cracks (<300 mu m in width) in concrete is almost unavoidable, not necessarily causing a risk of collapse for the structure, but surely impairing its functionality, accelerating its degradation, and diminishing its service life and sustainability. This review provides the state-of-the-art of recent developments of self-healing concrete, covering autogenous or intrinsic healing of traditional concrete followed by stimulated autogenous healing via use of mineral additives, crystalline admixtures or (superabsorbent) polymers, and subsequently autonomous self-healing mechanisms, i.e. via, application of micro-, macro-, or vascular encapsulated polymers, minerals, or bacteria. The (stimulated) autogenous mechanisms are generally limited to healing crack widths of about 100-150 mu m. In contrast, most autonomous self-healing mechanisms can heal cracks of 300 mu m, even sometimes up to more than 1 mm, and usually act faster. After explaining the basic concept for each self-healing technique, the most recent advances are collected, explaining the progress and current limitations, to provide insights toward the future developments. This review addresses the research needs required to remove hindrances that limit market penetration of self-healing concrete technologies.
Keywords
ENGINEERED CEMENTITIOUS COMPOSITES, THE-ART REPORT, RESPONSIVE, SUPERABSORBENT POLYMERS, MECHANICAL-PROPERTIES, CRYSTALLINE ADMIXTURES, FLY-ASH, CARBONATE PRECIPITATION, WATER PERMEABILITY, EXPANDED PERLITE, DOUBLE EMULSIONS, bacteria-assisted self-healing, concrete, mineral admixtures, mortar, polymers, self-healing

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Chicago
De Belie, Nele, Elke Gruyaert, Abir Al-Tabbaa, Paola Antonaci, Cornelia Baera, Diana Bajare, Aveline Darquennes, et al. 2018. “A Review of Self-healing Concrete for Damage Management of Structures.” Advanced Materials Interfaces 5 (17).
APA
De Belie, N., Gruyaert, E., Al-Tabbaa, A., Antonaci, P., Baera, C., Bajare, D., Darquennes, A., et al. (2018). A review of self-healing concrete for damage management of structures. ADVANCED MATERIALS INTERFACES, 5(17).
Vancouver
1.
De Belie N, Gruyaert E, Al-Tabbaa A, Antonaci P, Baera C, Bajare D, et al. A review of self-healing concrete for damage management of structures. ADVANCED MATERIALS INTERFACES. Hoboken: Wiley; 2018;5(17).
MLA
De Belie, Nele et al. “A Review of Self-healing Concrete for Damage Management of Structures.” ADVANCED MATERIALS INTERFACES 5.17 (2018): n. pag. Print.
@article{8591245,
  abstract     = {The increasing concern for safety and sustainability of structures is calling for the development of smart self-healing materials and preventive repair methods. The appearance of small cracks ({\textlangle}300 mu m in width) in concrete is almost unavoidable, not necessarily causing a risk of collapse for the structure, but surely impairing its functionality, accelerating its degradation, and diminishing its service life and sustainability. This review provides the state-of-the-art of recent developments of self-healing concrete, covering autogenous or intrinsic healing of traditional concrete followed by stimulated autogenous healing via use of mineral additives, crystalline admixtures or (superabsorbent) polymers, and subsequently autonomous self-healing mechanisms, i.e. via, application of micro-, macro-, or vascular encapsulated polymers, minerals, or bacteria. The (stimulated) autogenous mechanisms are generally limited to healing crack widths of about 100-150 mu m. In contrast, most autonomous self-healing mechanisms can heal cracks of 300 mu m, even sometimes up to more than 1 mm, and usually act faster. After explaining the basic concept for each self-healing technique, the most recent advances are collected, explaining the progress and current limitations, to provide insights toward the future developments. This review addresses the research needs required to remove hindrances that limit market penetration of self-healing concrete technologies.},
  articleno    = {1800074},
  author       = {De Belie, Nele and Gruyaert, Elke and Al-Tabbaa, Abir and Antonaci, Paola and Baera, Cornelia and Bajare, Diana and Darquennes, Aveline and Davies, Robert and Ferrara, Liberato and Jefferson, Tony and Litina, Chrysoula and Miljevic, Bojan and Otlewska, Anna and Ranogajec, Jonjaua and Roig-Flores, Marta and Paine, Kevin and Lukowski, Pawel and Serna, Pedro and Tulliani, Jean-Marc and Vucetic, Snezana and Wang, Jianyun and Jonkers, Henk M.},
  issn         = {2196-7350},
  journal      = {ADVANCED MATERIALS INTERFACES},
  language     = {eng},
  number       = {17},
  pages        = {28},
  publisher    = {Wiley},
  title        = {A review of self-healing concrete for damage management of structures},
  url          = {http://dx.doi.org/10.1002/admi.201800074},
  volume       = {5},
  year         = {2018},
}

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