ChemCo Systems

Redwood City,  CA 
United States
http://www.chemcosystems.com
  • Booth: 319

We make Epoxy Asphalt, a highly fatigue resistant, extremely durable and impermeable pavement primarily used on steel bridge decks. The product is thermoset (won't melt), is applied with standard asphalt paving equipment and has lasted 49 years on heavily used bridges.


 Products

  • Epoxy Asphalt
    Epoxy Asphalt is an extremely durable fatigue resistant pavement, which is used primarily on long span (orthotropic) steel decked bridges and a newer use in open graded pavements on grade....

  • Epoxy Asphalt Concrete is a polymer concrete that is composed of a slow curing, Epoxy Asphalt binder mixed together with standard asphalt concrete aggregates in the pug mill of an asphalt plant. The Epoxy Asphalt binder is a two-phase chemical system in which the continuous phase is a thermoset epoxy and the discontinuous phase is a mixture of specialized asphalts. A hot spray application of an Epoxy Asphalt bond (tack) coat precedes the laying of the Epoxy Asphalt Concrete. Epoxy Asphalt concrete is applied and compacted with conventional asphalt concrete paving equipment. The pavement is quickly ready for traffic in its partially cured state once it has cooled to ambient temperature. It develops full strength over two to four weeks depending on ambient temperatures.

    Shell Oil Company developed the first generation of Epoxy Asphalt in the late 1950's as a jet fuel and jet blast resistant specialty pavement for airfield applications. In 1967, Epoxy Asphalt was selected for its first bridge deck application as the wear surface of the mile long orthotropic steel deck span of the San Mateo-Hayward Bridge across San Francisco Bay where it lasted over 49 years. Today, ChemCo Systems provides experienced manfacturing, R&D and technical service and continues to improve the performance with new generations of Epoxy Asphalt including our ultra high performance Type 9 Composite Epoxy Asphalt, particularly for flexible decks, extreme climates and very heavily loaded trucks. Epoxy Asphalt may also be referred to as Epoxy Bitumen or Bitumen Modifed Epoxy in countries outside of North America.

    Physical Properties

    The two-phase Epoxy Asphalt binder is a thermoset polymer, that is, it will not melt after it has cured. This is a significant advantage of epoxy asphalt because conventional asphalts are thermoplastic polymers that readily melt at elevated temperatures (which can lead to delamination failures). Fresh laid Epoxy Asphalt pavement is not subject to rutting or shoving because the polymeric curing process is advanced during batching to a state of high stability. Thus, the dense-graded mix can be designed with a low void content without the danger of bleeding or flushing. The result is an extremely waterproof pavement that can be opened quickly.

    Substrates

    Epoxy Asphalt has excellent adhesion with the following substrates:

    > Portland Cement Concrete
    > Lightweight concrete
    > Steel (zinc-primed and unprimed)
    > Asphaltic Concrete and chip seals
    > Tar-Rubber Concrete
    > Epoxy Asphalt
    > Epoxy overlays