Record number :
Title of article :
Corrosion of rebar in concrete under cyclic freeze–thaw and Chloride salt action
Author/Authors :
Wang، نويسنده , , Zhendi and Zeng، نويسنده , , Qiang and Wang، نويسنده , , Ling-Jiang Yao، نويسنده , , Yan and Li، نويسنده , , Kefei، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
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Abstract :
We studied the coupled effects of freeze–thaw (F–T) cycling and chloride on corrosion of rebar in concrete. An ordinary concrete and a ternary-binder concrete were immersed in 3.5 wt.% NaCl solution and endured up to 200 F–T cycles. We found: (1) the risk of corrosion of steel reinforcement in concrete remained in the “passive region”, even with increasing F–T cycling, although serious spalling occurred for all concrete specimens; (2) factors that reduce rebar corrosion include lower temperatures, non-wetting phase percolation which blocks harmful chloride penetration, and insufficient oxygen supply; and (3) blends do not seem to improve the resistance to reinforcement corrosion.
Keywords :
Freeze–thaw , Corrosion , open circuit potential , Tafel extrapolation , Concrete
Journal title :
Construction and Building Materials
Link To Document :