A review on carbonation study in concrete
N Venkat Rao,T Meena +1 more
- Vol. 263, Iss: 3, pp 032011
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TLDR
In this article, the authors have reviewed the carbonation studies which are a vital durability property of concrete and endeavoured to focus and elucidate the gravity of importance, the process and chemistry of carbonate and how the various parameters like water/cement ratio, curing, depth of concrete cones, admixtures, grade of concrete, strength and porosity effect carbonation in concrete.Abstract:
In this paper the authors have reviewed the carbonation studies which are a vital durability property of concrete. One of the major causes for deterioration and destruction of concrete is carbonation. The mechanism of carbonation involves the penetration carbon dioxide (CO2) into the concrete porous system to form an environment by reducing the pH around the reinforcement and initiation of the corrosion process. The paper also endeavours to focus and elucidate the gravity of importance, the process and chemistry of carbonate and how the various parameters like water/cement ratio, curing, depth of concrete cones, admixtures, grade of concrete, strength of concrete, porosity and permeability effect carbonation in concrete. The role of Supplementary Cementitious Materials (SCMs) like Ground granulated Blast Furnace Slag (GGBS) and Silica Fume (SF) has also been reviewed along with the influence of depth of carbonation.read more
Citations
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References
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Journal ArticleDOI
Oxygen permeability of concrete and its relation to carbonation
TL;DR: In this paper, the authors present a revised model for concrete carbonation, which expands common carbonation models by accounting for the effect of relative humidity on both diffusion and chemical reactions.
Journal ArticleDOI
Carbonation of surface protected concrete
José Aguiar,Cristela Júnior +1 more
TL;DR: In this article, the authors compared surface protected concretes with non-protected ones and found that the surface protection provided better protection than the use of acrylic and siloxane resins.
Journal ArticleDOI
Statistical analysis of the carbonation rate of concrete
TL;DR: In this paper, the authors describe the reported effect of several variables on the rate of concrete carbonation and collates a data set of measurements published in the literature and introduce a new explanatory variable called "origin" which indicates whether the concrete was taken from a working structure or cast specifically for experiments.
Journal ArticleDOI
Comparison of carbonation of lightweight concrete with normal weight concrete at similar strength levels
TL;DR: In this article, a study on accelerated carbonation testing of normal weight concrete (NWC) and lightweight concrete (LWC) mixes proportioned for three levels of strength grades was presented.
Journal ArticleDOI
Corrosion behaviour of blended cements in low and medium strength concretes
TL;DR: In this paper, the corrosion characteristics of fly ash and slag concretes were studied through measurement of resistivity, pH, carbonation, and corrosion rate, and it was shown that fly ash, slag and blended cements performed better than their corresponding ordinary cements, with slag cements showing the best corrosion resistance.
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