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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
Places of action
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conferencepaper
Influence of cracks on the carbonation resistance of concrete structures
Abstract
Carbonation-induced corrosion of steel rebar embedded in concrete is one of the major issues influencing durability of reinforced concrete structures. It has been acknowledged that structural cracks in concrete influences the carbon dioxide (CO2) diffusivity and accelerates the carbonation-induced reinforcement corrosion, however most of the previous studies on the carbonation induced corrosion have concentrated on the un-cracked / unloaded concrete. This study investigates the impact of cracks caused by loading on the depth of carbonation into concrete. Concrete prisms (100x100x500 mm) were subjected to four different crack widths (0, 0.05-0.15 mm, 0.15-0.25 mm and 0.25-0.35 mm) and the carbonation depth was determined using an accelerated environment test programme based on the CEN/TS 12390-10:2007 and XRD analysis. The impact of replacing OPC cement by pulverized fuel ash (PFA) and ground granulated blast furnace slag (GGBS) on the carbonation depth in cracked concrete was also investigated. The results show a considerable influence of crack width on the depth of carbonation and the X-ray powder diffraction analysis (XRD) confirms these results. The penetration of carbon dioxide and accumulation of carbonation compound (CaCO3) were found to be concentrated at crack locations, whereas the carbonation depths at other locations were found to be less than the carbonation depth in un-cracked concrete. The results also demonstrate a significant increase in the penetration of carbonation due to the addition of supplementary materials in the samples when compared to the reference mixes.