TY - JOUR
T1 - Chloride-induced corrosion of steel in cracked concrete - Part II
T2 - Corrosion rate prediction models
AU - Otieno, M.
AU - Beushausen, H.
AU - Alexander, M.
N1 - Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2016/1
Y1 - 2016/1
N2 - Chloride-induced corrosion rate (icorr) prediction models for RC structures in the marine tidal zone that incorporate the influence of crack width (wcr), cover (c) and concrete quality are proposed. Parallel corrosion experiments were carried out for 2 1/4 years by exposing one half of 210 beam specimens (120 × 130 × 375 mm long) to accelerated laboratory corrosion (cyclic wetting and drying) while the other half underwent natural corrosion in the tidal zone. Experimental variables were wcr (0, incipient crack, 0.4, 0.7 mm), c (20, 40 mm), binder type (PC, PC/GGBS, PC/FA) and w/b ratio (0.40, 0.55). The two proposed models (one each for accelerated and natural icorr) can aid not only in quantifying the propagation phase, but also provide a novel way to select c, wcr and concrete quality.
AB - Chloride-induced corrosion rate (icorr) prediction models for RC structures in the marine tidal zone that incorporate the influence of crack width (wcr), cover (c) and concrete quality are proposed. Parallel corrosion experiments were carried out for 2 1/4 years by exposing one half of 210 beam specimens (120 × 130 × 375 mm long) to accelerated laboratory corrosion (cyclic wetting and drying) while the other half underwent natural corrosion in the tidal zone. Experimental variables were wcr (0, incipient crack, 0.4, 0.7 mm), c (20, 40 mm), binder type (PC, PC/GGBS, PC/FA) and w/b ratio (0.40, 0.55). The two proposed models (one each for accelerated and natural icorr) can aid not only in quantifying the propagation phase, but also provide a novel way to select c, wcr and concrete quality.
KW - Accelerated corrosion
KW - Chloride-induced corrosion
KW - Corrosion rate prediction
KW - Cracked concrete
KW - Natural corrosion
UR - http://www.scopus.com/inward/record.url?scp=84948467544&partnerID=8YFLogxK
U2 - 10.1016/j.cemconres.2015.08.008
DO - 10.1016/j.cemconres.2015.08.008
M3 - Article
AN - SCOPUS:84948467544
SN - 0008-8846
VL - 79
SP - 386
EP - 394
JO - Cement and Concrete Research
JF - Cement and Concrete Research
ER -