1. Origin, formation and classification

The term "coalshale" is associated with coal mining. It is commonly understood as the by-product resulting from the separation of coal from the waste rock that inevitably accompanies its extraction in the mine.

Waste rock is therefore coal shale, and can include materials of different natures, notably sandstone interlayers.

Nota

The term "shale" is in fact a misnomer, because in the petrographic sense, shale refers to any geological formation affected by tectonics that has produced schistosity in the material.

1.1 Coal mining

All coal mines are now closed.

To understand the nature of coal shales, we...

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Origin, formation and classification

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page Use of industrial sub-products - Coal shales

Nature and physico-chemical characteristics

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Bibliography

Technical articles

Documentations LCPC :

Laboratoire régional des ponts et chaussées de Lille : Comité de gestion de la taxe parafiscale - Détermination des limites d'utilisation des schistes rouges provenant des terrils des houillères. - Sept. 1978.
Laboratoires...

Standardization

Tests to determine the mechanical and physical properties of aggregates – Part 1: Determination of wear resistance (micro-DEVAL). Classification index: P18-650-1 Document modified by amendment: NF EN 1097-1/A1: April 2004. - NF EN 1097-1 - 11-96
Tests to determine the mechanical and physical properties of aggregates – Part 2: Methods for determining resistance to fragmentation. Classification index: P18-650-2 Status:...