Performance of steel reinforcement in Portland cement and high-volume fly ash concretes exposed to chloride solution

From National Research Council Canada

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Author	Search for: Gu, P.¹; Search for: Beaudoin, J. J.¹; Search for: Zhang, M. H.; Search for: Malhotra, V. M.
Affiliation	National Research Council of Canada. NRC Institute for Research in Construction
Format	Text, Article
Subject	steel; high volume fly ash; chloride solution; Concrete
Abstract	This paper describes the performance if steel reinforcement in portland cement and high-volume fly ash (HVFA) concretes exposed to a chloride solution. A number of large slabs, 833 x 600 x 153 mm in size, were cast from six air-entrained concrete mixtures. Four of these mixtures were made with normal portland cement with the water-cement ratio (w/c) if the mixtures ranging from 0.32 to 0.76; the remaining two mixtures were made with the HVFA concrete with a , w/(c + FA) of 0.32. The steel reinforcing bars were placed in concrete with cover thickness ranging from 13 to 76 mm. The concrete slabs were ponded with a 8.4% sodium chloride solution for a period of 6 months, and half-cell potential linear polarization, and AC impedance techniques were applied to monitor the progress of the corrosion of steel reinforcement.
Publication date	1999-09-01
In	ACI Materials Journal 96, no. Sept-Oct. 5 (1 September 1999): 551–558.
Language	English
Peer reviewed	Yes
NRC number	NRCC 42641 NRC-IRC-9303
NPARC number	20386806
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Record identifier	42d65adf-dc25-48c9-b138-852a23aaac02
Record created	2012-07-25
Record modified	2020-03-20

Date modified:: 2024-05-01