Monitoring reinforcement corrosion and corrosion-induced cracking using non-destructive x-ray attenuation measurements

An experimental and numerical study of the pattern of cracking of concrete due to steel reinforcement corrosion

“…The expansion factor f} was taken to be 1.0, as found in the literature [1,2,21], although other studies consider a greater expansion of the oxide [22,23]. For the normal stiffness, a wide range of values are found in the literature: in [2], the bulk modulus of the oxide was taken to be of the same order of magnitude as the bulk modulus of water (around 2 GPa); in [23,24] the elastic modulus was estimated from a combination of analytical models and experiments in which the radial displacement in concrete was measured by image correlation techniques; the values obtained in these two studies are, however, very different: an elastic modulus of 0.14 GPa is reported in [23] for an assumed Poisson's ratio of the rust of 0.2, while the values of the elastic modulus reported in [24] range between 2 and 20 GPa, and no reference to Poisson's ratio was made by the authors.…”

Laboratory Evaluation of Select Methods of Corrosion Prevention in Reinforced Concrete Bridges

“…A number of researchers have used an impressed current accelerated corrosion technique combined with salt water exposure for evaluation of long-term chloride-induced corrosion in reinforced concrete. Examples include works by Ray et al (2011), Mullard and Stewart (2011), Michel et al (2011), Abosrra et al (2011), El Maaddawy and Soudki (2003, and Austin et al (2004).…”

Corrosion-Induced Concrete Cracking Model Considering Corrosion-Filled Paste

“…In this study, CP is used to indicate this region. The existence of CP has been verified for reinforced concrete members that had deteriorated in a natural environment (Asami & Kikuchi, 2003;Duffó et al, 2004;Michel et al, 2011), in artificial cyclic wet/ dry tests by Jaffer andHansson (2009) andJin (2010) and during electrochemical corrosion (Care et al, 2008;Michel et al, 2011;. Although these studies have proven the existence of the CP, the actual value of CP, which can subsequently be used in the corrosion-induced concrete cracking model, has not yet been determined.…”

“…In the first stage, previous studies made by Chitty, Dillmann, Hostis, and Lombard (2005), Care, Nguyen, L'Hostis, and Berthaud (2008), Jaffer andHansson (2009), Michel, Pease, Geiker, Stang, andOlesen (2011), and determined an area of concrete around the steel penetrated by the corrosion products, i.e., a corrosion accommodating region (CAR) (Michel et al, 2011), or corrosion-filled paste (CP) (Wong, 2010). In this study, CP is used to indicate this region.…”