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Effect of chemical composition of polymeric precursors on the healing capability of cementitious materials

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Abstract
Cracking in concrete is frequently a concern since these cracks can provide easy entry channels for the penetration of aggressive liquids and gases into the concrete, leading to deterioration. The repair of these cracks is, therefore, indispensable. However, manual crack repair is expensive and difficult when cracks are not visible or accessible. Thus, the design of concrete with self-healing properties would be highly beneficial to improve its durability. One of the crack repair approaches makes use of capsules sequestering polymer-based healing agents. The self-healing mechanism is triggered upon crack formation, leading to release and reaction of the healing agent in the zone of damage. In the present work, we aimed at determining the most suitable polymer backbone to be applied for self-healing of cementitious materials. For this purpose, several key prerequisites such as viscosity, curing time and mechanical properties of different polymeric precursors including siloxane-, urethane-, epoxy- and polyester-based have been evaluated. To assess the effect of high alkalinity on the degradation of the polymerized healing agents, stability tests have been performed. The results indicate that different healing agent solutions show adequate curing time, viscosity and mechanical properties. The various healing agent solutions were manually injected into cracks of mortar samples to evaluate their sealing capability and strain capacity.

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Chicago
Pereira Gomes De Araujo, Maria Adelaide, Sandra Van Vlierberghe, Peter Dubruel, and Nele De Belie. 2015. “Effect of Chemical Composition of Polymeric Precursors on the Healing Capability of Cementitious Materials.” In E-MRS Fall Meeting, Abstracts. European Materials Research Society (E-MRS).
APA
Pereira Gomes De Araujo, M. A., Van Vlierberghe, S., Dubruel, P., & De Belie, N. (2015). Effect of chemical composition of polymeric precursors on the healing capability of cementitious materials. E-MRS Fall meeting, Abstracts. Presented at the E-MRS 2015 Fall meeting, European Materials Research Society (E-MRS).
Vancouver
1.
Pereira Gomes De Araujo MA, Van Vlierberghe S, Dubruel P, De Belie N. Effect of chemical composition of polymeric precursors on the healing capability of cementitious materials. E-MRS Fall meeting, Abstracts. European Materials Research Society (E-MRS); 2015.
MLA
Pereira Gomes De Araujo, Maria Adelaide, Sandra Van Vlierberghe, Peter Dubruel, et al. “Effect of Chemical Composition of Polymeric Precursors on the Healing Capability of Cementitious Materials.” E-MRS Fall Meeting, Abstracts. European Materials Research Society (E-MRS), 2015. Print.
@inproceedings{7241256,
  abstract     = {Cracking in concrete is frequently a concern since these cracks can provide easy entry channels for the penetration of aggressive liquids and gases into the concrete, leading to deterioration. The repair of these cracks is, therefore, indispensable. However, manual crack repair is expensive and difficult when cracks are not visible or accessible. Thus, the design of concrete with self-healing properties would be highly beneficial to improve its durability. One of the crack repair approaches makes use of capsules sequestering polymer-based healing agents. The self-healing mechanism is triggered upon crack formation, leading to release and reaction of the healing agent in the zone of damage.  
In the present work, we aimed at determining the most suitable polymer backbone to be applied for self-healing of cementitious materials. For this purpose, several key prerequisites such as viscosity, curing time and mechanical properties of different polymeric precursors including siloxane-, urethane-, epoxy- and polyester-based have been evaluated. To assess the effect of high alkalinity on the degradation of the polymerized healing agents, stability tests have been performed. The results indicate that different healing agent solutions show adequate curing time, viscosity and mechanical properties. 
The various healing agent solutions were manually injected into cracks of mortar samples to evaluate their sealing capability and strain capacity.},
  author       = {Pereira Gomes de Araújo, Maria Adelaide and Van Vlierberghe, Sandra and Dubruel, Peter and De Belie, Nele},
  booktitle    = {E-MRS Fall meeting, Abstracts},
  language     = {eng},
  location     = {Warsaw, Poland},
  publisher    = {European Materials Research Society (E-MRS)},
  title        = {Effect of chemical composition of polymeric precursors on the healing capability of cementitious materials},
  year         = {2015},
}