4. Upgrading coal shale by treatment with road binder
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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.
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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
Technique for treating coal shale with road binder
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