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Optimizing Mississippi aggregates for concrete bridge decks.
  • Published Date:
    2012-12-01
  • Language:
    English
Filetype[PDF-3.70 MB]


Details:
  • Corporate Creators:
  • Publication/ Report Number:
    FHWA/MS-DOT-RD-12-231
  • Resource Type:
  • Geographical Coverage:
  • NTL Classification:
    NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures ; NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ; NTL-HIGHWAY/ROAD TRANSPORTATION-Design
  • Format:
  • Abstract:
    AASHTO M 43 “Standard Specification for Sizes of Aggregate for Road and Bridge Construction”

    addresses particle size distribution of material included in various maximum nominal size aggregates. This

    particle size distribution requires additional processing such as screening, separating, and recombining to

    meet AASHTO M 43 or the Mississippi Department of Transportation’s particle size distribution

    requirements. Specifiers of concrete mixtures have utilized additional requirements on aggregates by

    placing upper and lower limits on combined percent retained on individual sieves. MDOT has recently

    utilized this concept by introducing similar limits on aggregate gradations used in concrete for bridge decks.

    This research project investigates the workability and shrinkage performance of concrete containing

    aggregate gradations not meeting these requirements and compares this performance to concrete containing

    aggregate gradations meeting MDOT’s requirements for bridge decks.

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