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Investigation and Assessment of Effective Patching Materials for Concrete Bridge Decks

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English


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  • Creators:
    Rangaraju, Prasad
  • Corporate Creators:
    Clemson University. Department of Civil Engineering
  • Corporate Contributors:
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA-SC-25-01
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    United States
  • Edition:
    Draft Final Report, Sept 1 2020 – Dec 31, 2023
  • Corporate Publisher:
    South Carolina. Department of Transportation
  • Abstract:
    Periodic maintenance of bridge decks through patching repairs is an essential strategy to maintain an effective transportation network. However, poor performance of patched sections needs to be studied to develop appropriate material selection methodology and proper construction practices to achieve durable repairs. The principal objective of this study was to evaluate a range of cementitious rapid-set patching materials for use as repair materials on bridge decks and develop a set of criteria to allow for selection of appropriate repair materials depending on environmental exposure conditions and compatibility with substrate concrete. For this purpose, a set of representative rapid-set patching materials based on different active binder chemistries were selected. Their hydration behavior along with mechanical and transport properties were evaluated across a range of environmental exposure conditions. In addition, the impact of surface preparation of the substrate concrete on the bond with the repair material, and the impact of vibration on the bond of repair material with substrate were also planned in this investigation. However, these studies could not be completed due to difficulty in securing field test sites in a timely manner. The principal findings from this study suggest that the success of achieving an effective repair with prebagged repair materials and plant-batched repair mixtures depend on key factors such as the sensitivity of repair materials performance to ambient temperature and quality of substrate surface in terms of texture and moisture saturation level.
  • Format:
    PDF
  • Funding:
    SPR 755
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:13f71fbab772f47fc30f7e2358649e731c0953c08711c7bd438999b8cde6893604cd100a945a288d7a770a7b174b33b45b82da53303de4edde41e26b886b0b2d
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  • File Type:
    Filetype[PDF - 15.04 MB ]
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