POLYMER-IMPREGNATED CONCRETE: FIRST APPLICATIONS

The use of polymer-impregnated concrete (PIC) in bridge decks and in other fields is reviewed. The procedure is outlined in which plastic was soaked into a 12 x 12 ft. section of a year-old deck. The deck was first dried and a sand layer 0.25 in. thick was placed atop. Monomer plastic was then sprayed on the deck, a polyethylene sheet was laid over the surface and left overnight. Next morning, a tarp was put over the deck and hot steam injected into the 24 in. space to polymerize or harden the liquid monomer. Techniques used in other bridge deck applications are outlined. A lab-impregnation procedure is also briefly described. The use is described of PIC (with its exceptionally good sulfate resistance) in agricultural drain tile. PIC has also been installed in a hydrogen sulfide sewage environment. Tests reveal that 24-in. diameter unreinforced PIC pipe is 20 percent stronger than conventional reinforced concrete pipe. Two-in. thick precast PIC segments backed by 3.5 in. of conventional concrete backfill has been found to be 60 percent more effective than conventional concrete systems in tunnel lining and ground support systems. The properties of PIC which has contributed to the interest in its use are reviewed. The compressive strength of laboratory samples are 4 times as high as that of conventional concrete. Accelerated freeze-thaw tests reveal that PIC specimens have a very low weight loss. Premeability tests showed that PIC samples had almost no water penetration. Sulfate and acid resistance of PIC is high. Skid resistance observations are also reported.

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  • Accession Number: 00265203
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 11 1975 12:00AM