SURFACE IMPREGNATION OF NEW CONCRETE BRIDGE DECKS

The procedures, materials and equipment are described which were used in the first polymer impregnated concrete bridge deck to provide preotection against chloride ion intrusion. The research, laboratory program and durability tests culminating in the development of the field process technology are also described. The surface impregnation process is composed of 4 steps: the concrete is cleaned of surface contaminants; the concrete is dried to a depth sufficient to permit the desired monomer penetration; the concrete is impregnated with a monomer system composed of 90 to 95 percent by weight of methyl methacrylate (MMA) and 10 to 5 percent by weight trimethylolpropane trimethylacrylate (TMPTMA). The monomer system also contains an azo-type polymerization catalyst; after the monomer has penetrated to the desired depth, it is polymerized by heating the concrete to activate the polymerization catalyst. The estimated cost of such impregnation of a concrete bridge deck will be approximately $27 per square yard of treated surface. This does not include profit, overhead or traffic control.

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Filing Info

  • Accession Number: 00141260
  • Record Type: Publication
  • Report/Paper Numbers: HS-019 049
  • Files: TRIS, USDOT
  • Created Date: Oct 26 1976 12:00AM