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Water penetration through cracks in self-healing cementitious materials with superabsorbent polymers studied by neutron radiography

Didier Snoeck (UGent) , Philip Van den Heede (UGent) , Tim Van Mullem (UGent) and Nele De Belie (UGent)
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Abstract
Super Absorbent Polymers (SAPs) are a promising admixture to obtain self-sealing and self-healing cementitious materials. They are able to physically block water penetration through cracks due to their swelling ability. This is very useful in a cementitious material which is prone to cracking leading to a reduced durability. The effectiveness of counteracting water penetration is of concern. Neutron radiography was performed in order to investigate the influence of SAPs on the water permeability through healed cracks with respect to a reference material without SAPs. The gravimetrically measured capillary absorption corresponded with the obtained results after image analysis and a quantitative analysis could be made. SAPs enhance the water impermeability and are able to seal and heal a crack effectively up to 100 mu m. The healing was a main factor to impede water movement through cracks. This will lead to less water ingress in building infrastructures and a possible longer service life.
Keywords
POROUS NETWORK CONCRETE, CRYSTALLINE ADMIXTURES, AUTOGENOUS SHRINKAGE, COMPOSITES, MORTARS, FRESH, MICROSTRUCTURE, QUANTIFICATION, MICROCAPSULES, MICROFIBERS, Microcracking, Absorption, Permeability, Polymers, Fiber reinforcement

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MLA
Snoeck, Didier et al. “Water Penetration Through Cracks in Self-healing Cementitious Materials with Superabsorbent Polymers Studied by Neutron Radiography.” CEMENT AND CONCRETE RESEARCH 113 (2018): 86–98. Print.
APA
Snoeck, D., Van den Heede, P., Van Mullem, T., & De Belie, N. (2018). Water penetration through cracks in self-healing cementitious materials with superabsorbent polymers studied by neutron radiography. CEMENT AND CONCRETE RESEARCH, 113, 86–98.
Chicago author-date
Snoeck, Didier, Philip Van den Heede, Tim Van Mullem, and Nele De Belie. 2018. “Water Penetration Through Cracks in Self-healing Cementitious Materials with Superabsorbent Polymers Studied by Neutron Radiography.” Cement and Concrete Research 113: 86–98.
Chicago author-date (all authors)
Snoeck, Didier, Philip Van den Heede, Tim Van Mullem, and Nele De Belie. 2018. “Water Penetration Through Cracks in Self-healing Cementitious Materials with Superabsorbent Polymers Studied by Neutron Radiography.” Cement and Concrete Research 113: 86–98.
Vancouver
1.
Snoeck D, Van den Heede P, Van Mullem T, De Belie N. Water penetration through cracks in self-healing cementitious materials with superabsorbent polymers studied by neutron radiography. CEMENT AND CONCRETE RESEARCH. Oxford: Pergamon-elsevier Science Ltd; 2018;113:86–98.
IEEE
[1]
D. Snoeck, P. Van den Heede, T. Van Mullem, and N. De Belie, “Water penetration through cracks in self-healing cementitious materials with superabsorbent polymers studied by neutron radiography,” CEMENT AND CONCRETE RESEARCH, vol. 113, pp. 86–98, 2018.
@article{8591292,
  abstract     = {Super Absorbent Polymers (SAPs) are a promising admixture to obtain self-sealing and self-healing cementitious materials. They are able to physically block water penetration through cracks due to their swelling ability. This is very useful in a cementitious material which is prone to cracking leading to a reduced durability. The effectiveness of counteracting water penetration is of concern. Neutron radiography was performed in order to investigate the influence of SAPs on the water permeability through healed cracks with respect to a reference material without SAPs. The gravimetrically measured capillary absorption corresponded with the obtained results after image analysis and a quantitative analysis could be made. SAPs enhance the water impermeability and are able to seal and heal a crack effectively up to 100 mu m. The healing was a main factor to impede water movement through cracks. This will lead to less water ingress in building infrastructures and a possible longer service life.},
  author       = {Snoeck, Didier and Van den Heede, Philip and Van Mullem, Tim and De Belie, Nele},
  issn         = {0008-8846},
  journal      = {CEMENT AND CONCRETE RESEARCH},
  keywords     = {POROUS NETWORK CONCRETE,CRYSTALLINE ADMIXTURES,AUTOGENOUS SHRINKAGE,COMPOSITES,MORTARS,FRESH,MICROSTRUCTURE,QUANTIFICATION,MICROCAPSULES,MICROFIBERS,Microcracking,Absorption,Permeability,Polymers,Fiber reinforcement},
  language     = {eng},
  pages        = {86--98},
  publisher    = {Pergamon-elsevier Science Ltd},
  title        = {Water penetration through cracks in self-healing cementitious materials with superabsorbent polymers studied by neutron radiography},
  url          = {http://dx.doi.org/10.1016/j.cemconres.2018.07.002},
  volume       = {113},
  year         = {2018},
}

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