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i

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
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/23238/dot_23238_DS1.pdf
  • File Type:
    Filetype[PDF - 687.88 KB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha-512:f96f1302dd50fb9cd211fa6c73fe3c08e49f5ce71dcb55724492db3ed08b569ac45c8bf2f5d6d8ec6b7a4c83adb982a2e29b0856e23ffd17a1fa0ed1feec9187
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