4. Optimized use of granular resources
The primary interest of a quarry is the controlled production of aggregates that meet the requirements of the applications for which they are intended. In civil engineering, these applications are mainly pavement layers, engineering structures and prefabricated concrete elements, and the level of requirements is generally high, making it necessary to be highly selective in quarrying.
To properly exploit a deposit, it is first necessary to eliminate the "discovery", i.e. the clay or weathered mantle that covers it, and sometimes even carry out mechanical sorting during crushing, or even washing, to remove certain polluted fractions, such as clay.
As a result, some operations may become unprofitable over time, or see their reserves dwindle.
The use of lime in the aggregate...
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Optimized use of granular resources
Soft limestone aggregates – Enhanced performance
Bibliography
Standards and norms
- Chaux de construction. - AFNOR NF EN 459 -
- Tests to determine the mechanical and physical properties of aggregates – Determination of the porosity of dry compacted filler. - AFNOR NF EN 1097-4 - 06/2008
- Sol traité à la chaux. - AFNOR NF EN 1227-11 -
- Essai d'évaluation de l'aptitude d'un sol au traitement. - AFNOR NF P 94-100 -
- Bituminous mixes – Test methods for hot hydrocarbon mixes...
Directories
Organizations – Federations – Associations (non-exhaustive list)
• UP Chaux – Union of lime producers
• National Lime Association (USA)
• IMA Europe – Industrial Minerals Association...
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