Corrosion of Reinforcing Steel in Fiber Reinforced Cementitious Composites
TLDR
In this article, the results of a series of long term corrosion tests on fiber reinforced cementitious composites containing polyethylene (PE) alone and hybrid steel cord (SC) and PE fibers were reported.Abstract:
For the purpose of global sustainability the long life of structures is essential and the durability performance of reinforced concrete structures is one of the key issues to be resolved. This paper reports the results of a series of long term corrosion tests on fiber reinforced cementitious composites containing polyethylene (PE) alone and hybrid steel cord (SC) and PE fibers. The results are also compared with ordinary mortar. The specimens are subjected to accelerated corrosion for one year by applying external potential to the steel bar anode and a cathode made out of a steel wire mesh placed outside the concrete. Durability performances of the specimens are examined through regular monitoring of the time to initiate corrosion, the corrosion area ratio, corrosion depth, and the amount of steel loss. Results show that the hybrid fiber reinforced cementitious composites (HFRCC) containing hybrid SC and PE fibers exhibited excellent performance compared to mortar and fiber reinforced cementitious composites (FRCC) containing PE fiber. The order of the durability performance is HFRCC, FRCC, and Mortar. It is observed that the sacrificial corrosion of some of the SC fibers in the HFRCC specimen played an important role in the significant reduction of steel bar corrosion in the specimen.read more
Citations
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A “fracture testing” based approach to assess crack healing of concrete with and without crystalline admixtures
TL;DR: In this paper, a methodology of characterization of both autogenic and engineered self-healing of ordinary concrete, with or without a crystalline admixture, has been assessed by means of 3-point bending tests performed up to controlled crack opening and up to failure, respectively before and after conditioning.
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Development of Engineered Self-Healing and Self-Repairing Concrete-State-of-the-Art Report
Hirozo Mihashi,Tomoya Nishiwaki +1 more
TL;DR: In this article, a state-of-the-art report on the recent development of engineered self-healing and self-repairing concrete is presented, which is based on the design concept of intelligent materials.
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Review of potential structural applications of hybrid fiber Engineered Cementitious Composites
TL;DR: In this article, a review of the recent research work focusing on assessing the performance of hybrid fiber Engineered Cementitious Composite (ECC) materials in a number of potential structural applications is presented.
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On the use of crystalline admixtures in cement based construction materials: from porosity reducers to promoters of self healing
TL;DR: In this paper, the effects of crystalline admixtures on the self-healing capacity of the cementitious composites have been investigated with reference to both a normal strength concrete (NSC) and a high performance fibre reinforced cementitious composite (HPFRCC).
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Corrosion of steel bars embedded in fibre reinforced concrete under chloride attack: State of the art
TL;DR: In this paper, the influence of fibres on the main parameters governing corrosion of conventional reinforcement has been discussed and a literature review summarises the influence that fibres have on the performance of reinforced concrete.
References
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TL;DR: In this article, a new analysis tool was developed to quantify the experimentally observed changes in morphology of portlandite, allowing the calculation of the relative surface energies of the crystal facets.
Book
High Performance Fiber Reinforced Cement Composites
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Journal ArticleDOI
Self-Healing Capability of Fibre Reinforced Cementitious Composites
TL;DR: In this paper, the self-healing capability of reinforced cementitious composites (FRCC), mechanical properties and surface morphology of crack in FRCC were investigated by means of microscope observation, water permeability test, tension test and backscattered electron image analysis.
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Flexural responses of hybrid steel-polyethylene fiber reinforced cement composites containing high volume fly ash
TL;DR: In this paper, the flexural properties of reinforced cement composites with different combinations of steel and polyethylene (PE) fibers under four-point bending are reported. And the effects of increase in fly ash content as partial replacement of cement beyond 50%, such as 60% and 70% on the flexure response of hybrid steel-PVA and steel-PE fiber composites are evaluated.
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Tensile strain hardening behaviour of hybrid steel-polyethylene fibre reinforced cementitious composites
TL;DR: In this paper, the effects of addition of different types of sands of different contents on the strain hardening behavior of hybrid fiber composites are evaluated. And the authors found that the addition of sand adversely affected the tensile strain hardness and multiple cracking behaviour of hybrid fibre composites.