Chloride-induced corrosion of reinforcement in low-calcium fly ash-based geopolymer concrete

Geopolymer concrete (GPC) has significant potential as a more sustainable alternative for ordinary Portland cement concrete (PCC). However; as a rather new engineering material, there are some concerns over the durability aspects of geopolymer-based binders. In this study, the performance of chloride-contaminated reinforced GPC specimens manufactured using a blended low-calcium fly ash and slag cement is investigated by long-term monitoring of corrosion parameters such as open circuit corrosion potential, polarization resistance and Tafel slopes. The electrochemical results are validated by contrasting the electrochemical mass losses with the mass losses obtained from the gravimetric measurements. The investigated low-calcium fly ash-based GPC exhibit a comparable electrochemical performance to a similar strength PCC during the propagation phase of corrosion. Additionally, some of the conventional classifications which are commonly used to assess the severity of corrosion in Portland cement-based corroding systems might need some recalibration to be used for low-calcium fly ash-based corroding systems.

[1]  J. González,et al.  Estabilidad del estado pasivo del acero en morteros de ceniza volante activada , 2010 .

[2]  J. Davidovits.  Geopolymers and geopolymeric materials , 1989 .

[3]  Hamid R Soleymani,et al.  Comparing corrosion measurement methods to assess the corrosion activity of laboratory OPC and HPC concrete specimens , 2004 .

[4]  Erez N. Allouche,et al.  Corrosion of steel bars induced by accelerated carbonation in low and high calcium fly ash geopolymer concretes , 2014 .

[5]  F. Mansfeld.  The Effect of Uncompensated IR-Drop on Polarization Resistance Measurements , 1976 .

[6]  Rahman Saidur,et al.  A review on emission analysis in cement industries , 2011 .

[7]  Arnaud Castel,et al.  Influence of steel–concrete interface defects owing to the top-bar effect on the chloride-induced corrosion of reinforcement , 2011 .

[8]  Sidney Diamond,et al.  Expression and analysis of pore fluids from hardened cement pastes and mortars , 1981 .

[9]  G. A. McRae,et al.  Electrochemical investigation of chloride-induced depassivation of black steel rebar under simulated service conditions , 2010 .

[10]  Fernando A. Soto,et al.  Multi-scale modeling and experimental investigations of geopolymeric gels at elevated temperatures , 2013 .

[11]  T. Bakharev,et al.  Resistance of geopolymer materials to acid attack , 2005 .

[12]  Khaled Sobhan,et al.  Durability of Fly Ash-Based Geopolymer Structural Concrete in the Marine Environment , 2013 .

[13]  B. Vijaya Rangan,et al.  ON THE DEVELOPMENT OF FLY ASH-BASED GEOPOLYMER CONCRETE , 2004 .

[14]  Carolyn M. Hansson,et al.  Potential pitfalls in assessing chloride-induced corrosion of steel in concrete , 2009 .

[15]  Carmen Andrade,et al.  Errors in the electrochemical evaluation of very small corrosion rates—II. Other electrochemical techniques applied to corrosion of steel in concrete , 1985 .

[16]  Vincent Garcia,et al.  Potential measurement to determine the chloride threshold concentration that initiates corrosion of reinforcing steel bar in slag concretes , 2014 .

[17]  Carmen Andrade,et al.  Errors in the electrochemical evaluation of very small corrosion rates—I. polarization resistance method applied to corrosion of steel in concrete , 1985 .

[18]  J. Davidovits.  Geopolymer chemistry and applications , 2008 .

[19]  I. Martinez,et al.  Polarization resistance measurements of bars embedded in concrete with different chloride concentrations: EIS and DC comparison , 2011 .

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

[21]  P. Schießl,et al.  Draft recommendation for repair strategies for concrete structures damaged by reinforcement corrosion , 1994 .

[22]  Neil G. Thompson,et al.  CORROSION COST AND PREVENTIVE STRATEGIES IN THE UNITED STATES , 2002 .

[23]  A. Castel,et al.  Influence of pre‐existing oxides layer and interface condition with carbonated concrete on active reinforcing steel corrosion , 2015 .

[24]  Hua Xu,et al.  Will Geopolymers Stand the Test of Time , 2009 .

[25]  Priyan Mendis,et al.  Engineering properties of inorganic polymer concretes (IPCs) , 2007 .

[26]  T. Bakharev,et al.  Durability of Geopolymer Materials in Sodium and Magnesium Sulfate Solutions , 2005 .

[27]  J. Deventer,et al.  The Role of Inorganic Polymer Technology in the Development of ‘Green Concrete’ , 2007 .

[28]  Ángel Palomo,et al.  Engineering Properties of Alkali-Activated Fly Ash Concrete , 2006 .

[29]  G. Song.  Theoretical analysis of the measurement of polarisation resistance in reinforced concrete , 2000 .

[30]  M. Stern,et al.  Electrochemical Polarization I . A Theoretical Analysis of the Shape of Polarization Curves , 1957 .

[31]  A. Fernández-Jiménez,et al.  A study on the passive state stability of steel embedded in activated fly ash mortars , 2008 .

[32]  Emilio Bastidas-Arteaga,et al.  Probabilistic lifetime assessment of RC structures under coupled corrosion–fatigue deterioration processes , 2009 .

[33]  Liangcai Cai,et al.  Freeze–thaw cycle test and damage mechanics models of alkali-activated slag concrete , 2011 .

[34]  J. M. Miranda,et al.  Electrochemical Techniques for Studying Corrosion of Reinforcing Steel: Limitations and Advantages, January 2005 , 2005 .

[35]  J. Dawson,et al.  Corrosion Monitoring using Polarisation Resistance Measurements: II. Sources of error , 1976 .

[36]  Carmen Andrade,et al.  Effect of protective oxide scales in the macrogalvanic behaviour of concrete reinforcements , 1998 .

[37]  Arnaud Castel,et al.  Effect of steel corrosion pattern on RC beam performance , 2010 .

[38]  Sun Wei,et al.  Fly ash based geopolymer concrete , 2006 .

[39]  S. Foster,et al.  Development of a mix design methodology for high‐performance geopolymer mortars , 2013 .

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

[41]  Sang-Hyeok Gang,et al.  Report Card for America's Infrastructure , 2012 .

[42]  E. Heitz,et al.  Theoretical Basis for the Determination of Corrosion Rates from Polarisation Resistance: Report prepared for the European Federation of Corrosion Working Party on ‘Physicochemical Testing Methods of Corrosion—Fundamentals and Application’ , 1976 .

[43]  Hamid Nikraz,et al.  Properties of fly ash geopolymer concrete designed by Taguchi method , 2012 .

[44]  John L. Provis,et al.  Pore solution composition and alkali diffusion in inorganic polymer cement , 2010 .

[45]  Arnon Bentur,et al.  Steel corrosion in concrete , 1997 .

[46]  Thierry Vidal,et al.  Influence of steel–concrete interface quality on reinforcement corrosion induced by chlorides , 2003 .

[47]  Á. Palomo,et al.  Durability of alkali-activated fly ash cementitious materials , 2007 .

[48]  Erez N. Allouche,et al.  Examination of Chloride-Induced Corrosion in Reinforced Geopolymer Concretes , 2013 .

[49]  B. Rangan,et al.  DEVELOPMENT AND PROPERTIES OF LOW-CALCIUM FLY ASH-BASED GEOPOLYMER CONCRETE , 2005 .

[50]  J. Dawson,et al.  Corrosion Monitoring using Polarisation Resistance Measurements: I. Techniques and correlations , 1976 .

[51]  Allen J. Bard,et al.  Electrochemical Methods: Fundamentals and Applications , 1980 .

[52]  Michael Raupach,et al.  Half-cell potential measurements—Potential mapping on reinforced concrete structures , 2003 .

[53]  Marton Marosszeky,et al.  Polarisation behaviour of steel bar samples in concrete in seawater. Part 1: Experimental measurement of polarisation curves of steel in concrete , 2008 .

[54]  K. B. Oldham,et al.  A modification of the Stern—Geary linear polarization equation , 1971 .

[55]  Y. Muntingh.  Durability and diffusive behaviour evaluation of geopolymeric material , 2006 .

[56]  Carmen Andrade,et al.  Corrosion rate monitoring in the laboratory and on-site , 1996 .

[57]  C. Andrade,et al.  Quantitative measurements of corrosion rate of reinforcing steels embedded in concrete using polarization resistance measurements , 1978 .

[58]  Ángel Palomo,et al.  Corrosion resistance in activated fly ash mortars , 2005 .

[59]  S. Bernal,et al.  Geopolymers and Related Alkali-Activated Materials , 2014 .

[60]  E J Wallbank,et al.  The Performance of Concrete in Bridges: a Survey of 200 Highway Bridges , 1989 .

[61]  S. Millard,et al.  Environmental influences on linear polarisation corrosion rate measurement in reinforced concrete , 2001 .

[62]  Ángel Palomo,et al.  Alkali-activated fly ashes: A cement for the future , 1999 .

[63]  K. Mehta.  Reducing the Environmental Impact of Concrete , 2001 .

[64]  Erich D. Rodríguez,et al.  Effect of binder content on the performance of alkali-activated slag concretes , 2011 .