Understanding the interacted mechanism between carbonation and chloride aerosol attack in ordinary Portland cement concrete

Abstract An experimental study is carried out with the aim to understand the interacted mechanism between carbonation and chloride aerosol attack in ordinary Portland cement (OPC) concrete. Effects of carbonation on the chloride profile, the chloride binding capacity and the chloride diffusion coefficient are evaluated. Besides, effect of chloride aerosol attack on the carbonation rate is investigated. Concrete specimens with three water-to-cement ratios (0.38, 0.47 and 0.53) are fabricated in this work. Tested results demonstrate that carbonation remarkably affects the chloride profile, reduces the chloride binding capacity, and also accelerates the rate of chloride ion diffusion of concrete. Besides, the presence of chloride aerosol can lead to lower the carbonation depth and increase the pH value of carbonated concrete. Microscopic properties such as morphology, porosity, and pore size distribution for the contaminated concretes are explored by scanning electron microscope and mercury intrusion porosimetry, which provide strong evidence to these research findings.

[1]  K. Aligizaki.  Pore Structure of Cement-Based Materials: Testing, Interpretation and Requirements , 2005 .

[2]  I. Yoon.  Simple approach to calculate chloride diffusivity of concrete considering carbonation , 2009 .

[3]  Michael D.A. Thomas,et al.  A study of the effect of chloride binding on service life predictions , 2000 .

[4]  Wichian Chalee,et al.  Long term performance of chloride binding capacity in fly ash concrete in a marine environment , 2010 .

[5]  Kenneth C. Hover,et al.  Mercury porosimetry of hardened cement pastes , 1999 .

[6]  Feng Xing,et al.  Electrochemical impedance measurement and modeling analysis of the carbonation behavior for cementititous materials , 2014 .

[7]  R. Narayan Swamy,et al.  Stability of Friedel's salt in carbonated concrete structural elements , 1996 .

[8]  Katrien Audenaert,et al.  Chloride binding of cement-based materials subjected to external chloride environment – A review , 2009 .

[9]  B. Dong,et al.  Study on Surface Permeability of Concrete under Immersion , 2014, Materials.

[10]  Carlos Chastre,et al.  Carbonation Service Life modelling of RC structures for concrete with portland and blended cements. , 2013 .

[11]  Seung-Jun Kwon,et al.  Permeability Characteristics of Carbonated Concrete Considering Capillary Pore Structure , 2007 .

[12]  Vesa Penttala,et al.  The pH measurement of concrete and smoothing mortar using a concrete powder suspension , 2004 .

[13]  Weichung Yeih,et al.  Suitability of several current used concrete durability indices on evaluating the corrosion hazard for carbonated concrete , 2004 .

[14]  Hongyan Ma,et al.  Mercury intrusion porosimetry in concrete technology: tips in measurement, pore structure parameter acquisition and application , 2014, Journal of Porous Materials.

[15]  D. Panesar,et al.  Influence of limestone and slag on the pore structure of cement paste based on mercury intrusion porosimetry and water vapour sorption measurements , 2014 .

[16]  M. Montemor,et al.  CHLORIDE-INDUCED CORROSION ON REINFORCING STEEL: FROM THE FUNDAMENTALS TO THE MONITORING TECHNIQUES , 2003 .

[17]  Kodo Kawase,et al.  Measurement of chloride ion concentration in concrete structures using terahertz time domain spectroscopy (THz-TDS) , 2012 .

[18]  F. Xing,et al.  Surface Chloride Concentration of Concrete under Shallow Immersion Conditions , 2014, Materials.

[19]  Feng Xing,et al.  Electrochemical impedance interpretation of the carbonation behavior for fly ash–slag–cement materials , 2015 .

[20]  H. K. Kim,et al.  Resistance of coal bottom ash mortar against the coupled deterioration of carbonation and chloride penetration , 2016 .

[21]  In Seok Yoon.  Deterioration of Concrete Due to Combined Reaction of Carbonation and Chloride Penetration: Experimental Study , 2007 .

[22]  Tang Luping,et al.  Chloride Transport in Concrete - Measurement and Prediction , 1996 .

[23]  C. Page,et al.  Effects of carbonation on pore structure and diffusional properties of hydrated cement pastes , 1997 .

[24]  G. Zi,et al.  Probabilistic analysis of reinforcement corrosion due to the combined action of carbonation and chloride ingress in concrete , 2016 .

[25]  Eugen Brühwiler,et al.  Comprehensive modeling of chloride ion and water ingress into concrete considering thermal and carbonation state for real climate , 2010 .

[26]  B. Dong,et al.  Study on water sorptivity of the surface layer of concrete , 2014 .

[27]  Erika Holt,et al.  Effect of coupled deterioration by freeze–thaw, carbonation and chlorides on concrete service life , 2014 .

[28]  O. Çopuroğlu,et al.  Effect of global climatic change on carbonation progress of concrete , 2007 .

[29]  Ali Akbar Ramezanianpour,et al.  The assessment of carbonation effect on chloride diffusion in concrete based on artificial neural network model , 2012 .

[30]  B. Oh,et al.  Effects of Carbonation on Chloride Penetration in Concrete , 2013 .

[31]  Nick R. Buenfeld,et al.  Factors influencing chloride-binding in concrete , 1990 .

[32]  D. Bentz.  Three-Dimensional Computer Simulation of Portland Cement Hydration and Microstructure Development , 1997 .

[33]  Josef Kaufmann,et al.  Pore structure of mortars with cellulose ether additions – Mercury intrusion porosimetry study , 2014 .

[34]  Lars-Olof Nilsson,et al.  Chloride binding capacity and binding isotherms of OPC pastes and mortars , 1993 .

[35]  Muhammed Basheer,et al.  Exposure of mortars to cyclic chloride ingress and carbonation , 2013 .

[36]  Feng Xing,et al.  Characterization of carbonation behavior of fly ash blended cement materials by the electrochemical impedance spectroscopy method , 2016 .

[37]  Arnaud Castel,et al.  Influence of steel–concrete interface condition on galvanic corrosion currents in carbonated concrete , 2010 .

[38]  Wps Dias,et al.  Reduction of concrete sorptivity with age through carbonation , 2000 .

[39]  Hailong Ye,et al.  Chloride penetration in concrete exposed to cyclic drying-wetting and carbonation , 2016 .

[40]  Sang-Hun Han,et al.  Influence of diffusion coefficient on chloride ion penetration of concrete structure , 2007 .

[41]  B. Dong,et al.  Study on the Carbonation Behavior of Cement Mortar by Electrochemical Impedance Spectroscopy , 2014, Materials.

[42]  M. Gustafsson,et al.  Dry deposition and concentration of marine aerosols in a coastal area, SW Sweden , 1996 .

[43]  F. Xing,et al.  Experimental Investigation on Pore Structure Characterization of Concrete Exposed to Water and Chlorides , 2014, Materials.

[44]  A. Boyd,et al.  Durability of concrete pipes subjected to combined steam and carbonation curing , 2011 .

[45]  Hassan Zibara,et al.  Binding of external chlorides by cement pastes , 2001 .

[46]  Yingang Du,et al.  Effects of chloride ions on carbonation rate of hardened cement paste by X-ray CT techniques , 2016 .

[47]  M. C. Alonso,et al.  Modification of Composition and Microstructure of Portland Cement Pastes as a Result of Natural and Supercritical Carbonation Procedures , 2006 .

[48]  M Hunger,et al.  Long-term chloride migration coefficient in slag cement-based concrete and resistivity as an alternative test method , 2016 .

[49]  S. Diamond.  A critical comparison of mercury porosimetry and capillary condensation pore size distributions of portland cement pastes , 1971 .

[50]  C. Page,et al.  Aspects of the electrochemistry of steel in concrete , 1982, Nature.

[51]  Pal Mangat,et al.  Chloride binding in concrete containing PFA, gbs or silica fume under sea water exposure , 1995 .

[52]  Kazuo Yamada,et al.  Chloride Binding of Cement Estimated by Binding Isotherms of Hydrates , 2005 .

[53]  B. Johannesson,et al.  Microstructural changes caused by carbonation of cement mortar , 2001 .

[54]  Lars-Olof Nilsson,et al.  Resistance of Concrete to Chloride Ingress: Testing and modelling , 2011 .