RECYCLED MATERIALS MAKE TRAFFIC SIGNS

The most valuable waste product for recycling is paper because of its high economical returns. In Hempstead, New York, electrostatic precipitators added to a Merrick incinerator have produced a fine, powdered flyash made up of 11 principal elements due to the variety of refuse. Experimental traffic signs have been made, using alternating layers of newspaper with a thick slurry of this flyash and a polyester resin. The slurry is applied to the back and front of each sheet in a shallow plywood frame. After it has been cured, the hardened stack is removed from the frame. Tests are being conducted presently to test the impact strength of this incinerator flyash as compared with other materials. Results thus far have shown that it will equal or surpass the impact strength of other materials. The surface finish is somewhat rougher than signs composed of conventional materials, but this can probably be refined, and in no way does it impair the sign's function. Assessment of the costs involved in production is difficult to determine since the resin was purchased in a small quantity. There is no doubt, though, that there are savings in this method, and it is possible that this sign production may be a viable solution to the problem of solid waste disposal.

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  • Corporate Authors:

    Public Works Journal Corporation

    P.O. Box 688
    Ridgewood, NJ  United States  07451
  • Authors:
    • Schoendorf, W
  • Publication Date: 1973-9

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Filing Info

  • Accession Number: 00260643
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 12 1974 12:00AM