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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4. Upgrading coal shale by treatment with road binder

  • Pre-project recommendations

    The following solutions were planned at the preliminary design stage of the earthworks for the Dourges multimodal platform, based on the authorized operation on the "116/117" slag heap:

    • use of raw shale for backfill (criterion AR1) and railway subgrades;

    • production of formoschist by screening, for use in road sub-base (PF2 criteria) and railway sub-base.

  • Conclusions of the market's geotechnical campaign

    Project studies prior to the start of work led to the following findings, based on a representative sample of boreholes drilled in the slag heap:

    • a 0/150 grading curve, with 45% passing 20...

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Upgrading coal shale by treatment with road binder