4. Diversified uses for fly ash
4.1 Classification by type
Generally speaking, ash from coal combustion in thermal power plants has specific characteristics and properties in terms of fineness, shape, pozzolanic and hydraulic activity, enabling it to be put to a wide range of uses in the construction and public works sector, particularly in the road sector, which is of particular interest to us.
Depending on their type, ashes are mainly used as binders or aggregates (fines), but also (to a lesser extent) for dewatering and compaction purposes. The classification proposed in table 5 is representative of the possible uses, mainly in the road sector.
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Diversified uses for fly ash
Backfill and subgrade applications – Road and rail applications
Guides and catalogs
Websites
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ADEME
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DRIRE
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EDF – Flame thermal energy – Generation sites in France
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Events
International Ash Utilization Symposium – Healths aspect of Coal Fly Ash. The International Ash Utilization Symposium is held every 2 years. It is organized by the University of Kentucky Applied Energy Research Center and the U.S. Department of Energy.
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2nd "Earthworks in Europe" symposium
This 2nd Colloquium will be held in London on June 3-4, 2009. It follows...
Standards and norms
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French reference standards
- Exécution des terrassements. Classification des matériaux utilisables dans la construction des remblais et des couches de forme d'infrastructure routière. - NF P11-300 - Septembre 1992
- Exécution des terrassements Terminologie. - NF P11-301 - Décembre 1994
- Liants hydrauliques. Ciments courants. Compositions, spécifications et critères...
Regulations
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Extracts from legislative references
Article L. 511-1 of the French Environment Code. The provisions of this title apply to factories, workshops, warehouses, building sites and, in general, installations operated or owned by any natural or legal person, public or private, which may present dangers or inconveniences either for the convenience of the neighborhood,...
Statistical and economic data
European Commission – Directorate-General for Energy and Transport.
Conventional energies – Coal and oil – EU imports of hard coal from third countries for power plants in 2000-2001.
Ministère de l'Économie, de l'Industrie et de l'Emploi, DGEMP, 24/06/2008.
Coal: main provisional results for 2007. DGEMP/Observatoire de l'énergie. June...
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