Method and device for producing a surface coating on a surface such as a road

  • US 5,069,578 A
  • Filed: 07/19/1990
  • Issued: 12/03/1991
  • Est. Priority Date: 07/21/1989
  • Status: Expired due to Term
First Claim
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1. A method for producing a surface coating on a surface, comprising the steps of:

  • spreading a layer of bituminous liquid binding material on the surface;

    spreading a layer of aggregates, comprising loose chips covered with a pasty mixture of bitumen and pulverulent material, over said layer of bituminous liquid binding material;

    compacting said layer of aggregates against said layer of bituminous liquid binding material;

    wherein said steps of spreading said layer of binding material, spreading said layer of aggregates and compacting said layer of aggregates are performed successively along a particular direction of advance within a period of five seconds or less for any given portion of said surface coating; and

    wherein said layer of binding material contains at least 11 percent and no more than 89 percent by weight of the total quantity of bitumen present in said surface coating.

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