Bonding agents for portland cement concrete and mortar.
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Bonding agents for portland cement concrete and mortar.

Filetype[PDF-687.88 KB]


  • English

  • Details:

    • Resource Type:
    • Geographical Coverage:
    • OCLC Number:
      754846933
    • NTL Classification:
      NTL-HIGHWAY/ROAD TRANSPORTATION-Construction and Maintenance ; NTL-HIGHWAY/ROAD TRANSPORTATION-Materials ;
    • 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.

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