Water permeability of reinforced concrete with and without fiber subjected to static and constant tensile loading

In this study, an innovative permeability device allowing permeability measurement simultaneously to loading was used to investigate the water permeability and self-healing of reinforced concrete. The experimental conditions focused on normal strength concrete (NSC) and fiber reinforced concrete (FR...

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Bibliographic Details
Published in:Cement and concrete research 2012-07, Vol.42 (7), p.945-952
Main Authors: Desmettre, C., Charron, J.-P.
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Calcium carbonate
Cements
Concrete (E)
Concretes. Mortars. Grouts
Cracks
Exact sciences and technology
Fiber reinforcement (E)
Fibers
Materials
Measurements. Technique of testing
Permeability
Permeability (B)
Reinforced concrete
Reinforcement
Reinforcing steels
Self-healing
Tensile properties (B)
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Summary:In this study, an innovative permeability device allowing permeability measurement simultaneously to loading was used to investigate the water permeability and self-healing of reinforced concrete. The experimental conditions focused on normal strength concrete (NSC) and fiber reinforced concrete (FRC) tie specimens under static and constant tensile loadings. Crack pattern and crack openings under the same loadings were measured on companion specimens. Experimental results emphasized the positive contribution of fibers to the durability of reinforced concrete. Under static tensile loading, the FRC tie specimens were 60% to 70% less permeable than the NSC tie specimens at the same level of stress in the reinforcement. After 6days of constant loading, the FRC showed greater self-healing capacity with a reduction in water penetration of 70% in comparison to 50% for the NSC. The main cause of self-healing was the formation of calcium carbonate (CaCO3).
ISSN:0008-8846
1873-3948
DOI:10.1016/j.cemconres.2012.03.014