Article | REF: C5372 V2

Utilization of industrial by-products - Coal shales: site of Dourges

Authors: Pierre ROSSI, Ludovic GAVOIS, Guy RAOUL

Publication date: November 10, 2008

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5. Technique for treating coal shale with road binder

The results obtained from the first test plots, carried out using a pulverizer, rapidly confirmed the laboratory studies. As a result, the initially envisaged use of a fixed plant was abandoned in favor of mobile workshops.

  • Workshop organization

    Depending on the application, the shale was processed :

    • or for excavation (transport of treated materials);

    • or backfill (transport of raw materials).

    For the subgrade of the multimodal platform treated with 6% excavated material, the treatment workshop was organized as follows, in 40 cm thick passes:

    • use of a scarifier to decompact the soil and detect any mining waste (timber, scrap metal, conveyor belts, etc.);...

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Technique for treating coal shale with road binder