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Bonding agents for portland cement concrete and mortar.

File Language:
English


Details

  • Creators:
    Brown, Bernard C.
  • Corporate Creators:
    Iowa. Dept. of Transportation
  • Subject/TRT Terms:
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Iowa
  • Corporate Publisher:
    Iowa. Dept. of Transportation. Highway Division
  • Abstract:
    Structural repairs of bridge piers and abutements require patching concrete

    used depends upon the depth of the patch to be made. In some instances, the

    use of a liquid bonding agent has been specified in the mixes as well as in a

    grout scrubbed onto the surface to be patched prior to the mix placement.

    Most of the bonding agents presently approved by the Iowa D.O.T. are

    polyvinyl acetate (PVA) or some type of latex.

    In a general discussion with a consultant about various types of bridge

    repair materials and processes, the subject of bonding agents was discussed at

    some length. It was the opinion of the consultant that the usage of polyvinyl

    acetates should be discontinued because of possible deterioration of this

    material with time. Some of these materials apparently re-emulsify in a high

    moisture environment causing serious patch deterioration. As a result of this

    information, a study was initiated to determine the durability of these

    materials.

  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:f96f1302dd50fb9cd211fa6c73fe3c08e49f5ce71dcb55724492db3ed08b569ac45c8bf2f5d6d8ec6b7a4c83adb982a2e29b0856e23ffd17a1fa0ed1feec9187
  • Download URL:
  • File Type:
    Filetype[PDF - 687.88 KB ]
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