The Effect of Cracks on Chloride Penetration into Concrete
This study is focused on examining the effect of critical crack width in combination with crack depth on chloride penetration into concrete. Because concrete structures have to meet a minimum service-life, critical crack width has become an important parameter. Specimens with different crack width / crack length have been subjected to rapid chloride migration testing (RCM). The results of this study show a critical crack width of about 0.012 mm. Cracks smaller than this critical crack width are considered not to have a significant influence on the rate of chloride transport inwards, while chloride penetration does proceed faster above this critical crack width.
J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel
I. S. Yoon et al., "The Effect of Cracks on Chloride Penetration into Concrete ", Key Engineering Materials, Vols. 348-349, pp. 769-772, 2007