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Internal Curing and Supplementary Cementitious Materials in Bridge Decks
Lafikes, James Khajehdehi, Rouzbeh Feng, Muzai O’Reilly, Matthew Darwin, David
Lafikes, James
Khajehdehi, Rouzbeh
Feng, Muzai
O’Reilly, Matthew
Darwin, David
Citations
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Abstract
Supplementary cementitious materials (SCMs) in conjunction with pre-wetted fine lightweight aggregate
to provide internal curing are being increasingly used to produce high-performance, low-shrinking concrete to mitigate
bridge deck cracking, providing more sustainable projects with a longer service life. Additionally, the SCMs aid in
concrete sustainability by reducing the amount of cement needed in these projects. This study examines the density of
cracks in bridge decks in Indiana and Utah that incorporated internal curing with various combinations of portland
cement and SCMs, specifically, slag cement, Class C and Class F fly ash, and silica fume, in concrete mixtures with
water-cementitious material ratios ranging from 0.39 to 0.44. When compared with crack densities in low-cracking
high-performance concrete (LC-HPC) and control bridge decks in Kansas, concrete mixtures with a paste content
higher than 27% exhibited more cracking, regardless of the use of internal curing or SCMs. Bridge decks with paste
contents below 26% that incorporate internal curing and SCMs exhibited low cracking at early ages, although
additional surveys will be needed before conclusions on long-term behavior can be made.
Description
Date
2017-10
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Volume Title
Publisher
American Concrete Institute
Research Projects
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Keywords
Bridge decks, Cracking, High-performance concrete, Internal curing, Sustainability
Citation
Lafikes, J., Khajehdehi, R., Feng, M., O’Reilly, M., and, Darwin, D., “Internal Curing and Supplementary Cementitious Materials in Bridge Decks,” Cracking and Durability in Sustainable Concretes, American Concrete Institute Symposium Vol., SP-336, R. Leistikow and K. W. Kramer, ed., 2019, pp. 1-20.