Extending service life of high performance concrete bridge decks with internal curing

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ConferenceInternational Conference on Creep, Shrinkage and Durability of Concrete and Concrete Structures (CONCREEP 8): 30 September 2008, ISE-Shima, Japan
Pages16; # of pages: 6
SubjectHigh performance / High strength concrete; Bridges
AbstractHigh performance concrete (HPC) bridge decks areprone to premature cracking if movement is restrained. Internal curing (IC) can reduce shrinkage cracking in concrete structures, thus improving their per-formance and service life. However, there is very limited information available in the literature on the possi-ble extension of service life due to internal curing. This paper addresses this question by using predictive models to estimate the service lives of typical bridge decks made with concrete using internal curing as op-posed to conventional curing. Four options are compared: (i) normal concrete deck; (ii) HPC deck; (iii) HPC deck with internal curing; and (iv) very high performance concrete deck with internal curing. It was found that the use of internal curing can increase the service life of HPC bridge decks by almost ten years, which is mainly due to due a slower penetration of chlorides as a result of reduced cracking.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number50429
NPARC number20377212
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Record identifier7899de5e-d302-4d38-aee8-b130b5d14bde
Record created2012-07-24
Record modified2016-05-09
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