Tolerance limit of chloride for steel in blended cement mortar using the cyclic polarisation technique
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Tolerance limit of chloride for steel in blended cement mortar using the cyclic polarisation technique
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| Creator |
Song, H.W.
Saraswathy, V. Muralidharan, S. Thangavel, K. |
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| Subject |
Corrosion Protection
Corrosion Science and Engineering |
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| Description |
The tolerance limit for chloride in ordinary
Portland cement (OPC) and blended cements such as
Portland pozzolana cement (PPC) and Portland slag cement
(PSC) was assessed by cyclic polarisation. This study
covers both cement extracts and mortar. The salient features
of this investigation were: in extracts, the tolerance
limit for chloride actually doubles for PSC when compared
to PPC and OPC. The tolerance limit for chloride for
various mortars follows the order: PSC[PPC[OPC. In
OPC and PPC mortar, the repassivation potential (Erep)
shifted negatively with higher amounts of free chloride but
in PSC mortar Erep shifted positively (+590 mV) even in
the presence of 5,000 ppm of free chloride. PSC takes
longer time (50 days) to reach Erep indicating perfect
passivity maintained for the embedded steel.
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| Publisher |
Springer Verlag
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| Date |
2008
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/234/1/077-2008.pdf
Song, H.W. and Saraswathy, V. and Muralidharan, S. and Thangavel, K. (2008) Tolerance limit of chloride for steel in blended cement mortar using the cyclic polarisation technique. Journal of Applied Electrochemistry, 38 (4). pp. 445-450. ISSN 0021-891X |
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| Relation |
http://cecri.csircentral.net/234/
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