Modeling of the Influence of Transverse Cracking on Chloride Penetration into Concrete

Abstract Concrete service life models have proliferated in recent years due to increased interest in designing infrastructure elements with at least a 75-year service life, along with greater emphasis on life-cycle costing. While existing models consider a variety of concrete material and environmental factors, at varying levels of complexity, in predicting the time until the onset of chloride-induced corrosion of the steel reinforcement, the influence of cracking is generally beyond their current scope. This paper presents a preliminary strategy for examining the influence of transverse cracking on chloride ion penetration into concrete that includes a graphical approach for adjusting the predicted service life provided by current models to reflect this influence. Comparison to experimental data for saturated concretes indicates that the contributions of binding of the chloride ions by the cement paste play a significant role in slowing the ingress of chlorides and should be accounted for in any modeling efforts.

[1]  O. Rodríguez,et al.  INFLUENCE OF CRACKS ON CHLORIDE INGRESS INTO CONCRETE , 2003 .

[2]  Tetsuya Ishida,et al.  Modeling of chloride diffusivity coupled with non-linear binding capacity in sound and cracked concrete , 2009 .

[3]  David Darwin,et al.  Effect of Cracking on Chloride Content in Concrete Bridge Decks , 2006 .

[4]  J. Weiss,et al.  Photogrammetric Assessment of Flexure Induced Cracking of Reinforced Concrete Beams under Service Loads , 2006 .

[5]  Taketo Uomoto,et al.  Development of simulation model of chloride ion transportation in cracked concrete , 2005 .

[6]  Pd Cady,et al.  Chloride Penetration and the Deterioration of Concrete Bridge Decks , 1983 .

[7]  Atsuhiko Machida,et al.  PENETRATION PROFILE OF CHLORIDE ION IN CRACKED REINFORCED CONCRETE , 2004 .

[8]  Johan Silfwerbrand,et al.  Estimation of Chloride Ingress in Uncracked and Cracked Concrete Using Measured Surface Concentrations , 2002 .

[9]  Kenneth A. Snyder,et al.  Predicting Service Life Of Chloride-Exposed Steel-Reinforced Concrete , 1996 .

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

[11]  Seung-Jun Kwon,et al.  Analysis technique for chloride penetration in cracked concrete using equivalent diffusion and permeation , 2012 .

[12]  R. Mills.  Self-diffusion in electrolyte solutions , 1989 .

[13]  C. Fu,et al.  Modeling of Chloride Ions Diffusion in Cracked Concrete , 2010 .

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

[15]  Nicos Martys,et al.  Diffusion in partially-saturated porous materials , 1999 .

[16]  John Crank,et al.  The Mathematics Of Diffusion , 1956 .

[17]  F S Fanous,et al.  SERVICE LIFE OF IOWA BRIDGE DECKS REINFORCED WITH EPOXY-COATED BARS , 2000 .

[18]  David Darwin,et al.  Control of Cracking In Bridge Decks: Observations From The Field , 2004 .

[19]  Tamon Ueda,et al.  Mesoscale Modelling of the Chloride Diffusion in Cracks and Cracked Concrete , 2011 .

[20]  Stéphanie Bonnet,et al.  Influence of traversing crack on chloride diffusion into concrete , 2008 .

[21]  B. Oh,et al.  Effect of crack width on chloride diffusion coefficients of concrete by steady-state migration tests , 2011 .

[22]  Gang Xu,et al.  Numerical Simulation on Chloride Ions Diffusion in Concrete , 2011 .

[23]  Mustafa Şahmaran,et al.  Influence of transverse crack width on reinforcement corrosion initiation and propagation in mortar beams , 2008 .

[24]  Hiroshi Tada,et al.  The stress analysis of cracks handbook , 2000 .

[25]  Nathan Lawrence Kyle.  Subsidence Cracking of Concrete Over Steel Reinforcement Bar in Bridge Decks , 2001 .

[26]  W Spencer Guthrie,et al.  Effects of Initial Surface Treatment Timing on Chloride Concentrations in Concrete Bridge Decks , 2007 .