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Seismic, creep, and tensile testing of various epoxy bonded rebar products in hardened concrete.

File Language:
English


Details

  • Creators:
  • Corporate Creators:
    California. Dept. of Transportation. Division of Research and Innovation
  • Corporate Contributors:
    United States. Federal Highway Administration
  • Subject/TRT Terms:
  • Publication/ Report Number:
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    California
  • Corporate Publisher:
    California. Dept. of Transportation. Division of Research and Innovation
  • Abstract:
    The objective of this project was to evaluate the performance of currently specified epoxy adhesive

    anchor systems on various epoxy-coated rebar under seismic, creep and tensile loading. Previous testing of

    dowel bonding materials for use in hardened concrete was performed on plain rebar, raising the question of their

    performance on epoxy coated rebar.

    The epoxy-coated rebar was found to meet the requirements of ICBO-AC58, Section 5.3.7.2.4,

    “Conditions of Acceptance” for tension and seismic loading when bonded into hardened concrete using an epoxy

    adhesive. However, the epoxy-coated rebar did not meet the requirements of the Caltrans

    Augmentation/Revisions to ICBO-AC58, Section 5.3.3.2, “Conditions of Acceptance” for creep loading when

    bonded into hardened concrete. The rebar bonded with Covert Operations CIA-Gel 7000 was found to meet the

    creep requirements, whereas the rebar bonded with Simpson SET22 and Red Head Epcon C6 did not meet the

    conditions of acceptance for creep loading.

    It was also noticed that, when compared to the manufacturer test data, the epoxy-coated rebar

    outperformed uncoated rebar in allowable tensile loads for two of the three epoxies tested. Simpson SET22

    adhesive under performed the manufacturer test data. Revision (2007): Upon further review of the creep data for

    the rebar bonded with Simpson SET, it was determined that the adhesive met the creep requirement. Due to the

    load fluctuations, only the first 26 days of data were used for the logarithmic curve fit.

  • Format:
    PDF
  • Funding:
    F 01 IR 25
  • Collection(s):
  • Main Document Checksum:
    urn:sha256:2e8474cb6d9361d524e007ba25b55713d252242dcb1e7c9baaaa440cf223ffff
  • Download URL:
  • File Type:
    Filetype[PDF - 2.31 MB ]
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