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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Rafiq, Muhammad Imran
University of Brighton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2021Impact of climate change on the carbonation in concrete due to Carbon Dioxide ingresscitations
- 2020Combined impact of carbonation and crack width on the Chloride Penetration and Corrosion Resistance of Concrete Structurescitations
- 2019Effect of cracks on alkalinity level of concrete structures exposed to carbon dioxide environment condition
- 2019Influence of Carbonation on the Resistance of Concrete Structures to Chloride Penetration and Corrosioncitations
- 2018Influence of cracks on the carbonation resistance of concrete structures
- 2017The effect of rice husk ash properties on the strength and durability of concrete at high replacement ratio
- 2017Experimental investigation of the effects of aggregate size distribution on the fracture behaviour of high strength concretecitations
- 2013Stochastic modeling of chloride-induced pitting corrosion of reinforcement bars in concrete
- 2013Spatial characterisation of chloride-induced corrosion of bars in concrete
- 2013Stochastic modelling of chloride-induced pitting corrosion of reinforcement bars in concrete.
- 2012Physical characterization of reinforcing bar corrosion in concrete
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document
Influence of Carbonation on the Resistance of Concrete Structures to Chloride Penetration and Corrosion
Abstract
Chloride-induced corrosion of steel rebar embedded in concrete is one of the major concerns influencing the durability of reinforced concrete structures. It is widely recognized that the carbonation in concrete affects the chloride diffusivity and accelerates the chloride-induced reinforcement corrosion. However, only very limited studies have dealt with this issue in the literature.The presence of service load related cracks also affects the reinforcement corrosion. This study aims to investigate the potential impact of concrete carbonation on the chloride penetration resistance, and degree of corrosion, in RC structures subjected to service related microcracks. <br/>The experimental programme involves casting of concrete prisms (100 x 100 x 500 mm) with different water-cement ratios (w/c) of 0.4, 0.5 and 0.6 and with four different crack widths (0, 0.05-0.15 mm, 0.15-0.25 mm and 0.25-0.35 mm). These samples were exposed initially to accelerated carbon dioxide (CO2) environment and then exposed to the accelerated chloride environment. Carbonation depth, chloride penetration, and the degree of corrosion (using half-cell) were experimentally measured. The results indicated that (i): The depth of carbonation increases with the increase in crack width and w/c ratio, (ii) chloride penetration depth in concrete structures increases significantly due to the influence of carbonation and (iii)half-cell corrosion potential increases significantly when carbonated concrete samples are exposed to the chloride environment relative to the uncarbonated concrete samples.<br/>