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    Internal Curing and Supplementary Cementitious Materials in Bridge Decks

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    SL_Report_18-2.pdf (1.843Mb)
    Issue Date
    2018-04
    Author
    Lafikes, James
    Khajehdehi, Rouzbeh
    Feng, Muzai
    O’Reilly, Matthew
    Darwin, David
    Publisher
    University of Kansas Center for Research, Inc.
    Type
    Technical Report
    Is part of series
    SL Report;18-2
    Published Version
    https://iri.ku.edu/reports
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    Abstract
    Supplementary cementitious materials (SCMs) are used in conjunction with pre-wetted fine lightweight aggregate to provide internal curing, producing high-performance, low-shrinking concrete to mitigate bridge deck cracking. 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.
    URI
    http://hdl.handle.net/1808/26306
    Collections
    • Infrastructure Research Institute Scholarly Works [324]
    Citation
    Lafikes, J., Khajehdehi, R., Feng, M., O’Reilly, M., and Darwin, D., “Internal Curing and Supplementary Cementitious Materials in Bridge Decks,” SL Report 18-2, University of Kansas Center for Research, Inc., Lawrence, KS, April 2018, 67 pp.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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