Power plant ashes and their utilization. Part 10. Summary
For fine-grained fly ash and coarser-grained bottom ash originating from power plants as combustion residue a profitable use for many purposes has already been found. Many European countries utilize great amounts of ashes they produce. The quality of ash is dependent on the fuel used and the equipment of the power plant in question. The building industry utilizes plenty of fine-grained materials with many features closely resembling fly ash. In lightweight aggregate production it is possible to use fly ash for improving the strength level of a product or lightweight aggregate particles can be sintered from fly ash and water without using clay. For the manufacture of bricks fly and bottom ashes have been used abroad as a material replacing sand and silt or as such mixed together. In road construction, fly ash is suitable for use as an embankment fill and a stabilized structure for subbases and base courses or as a filler for asphalt pavements. For the purposes of fertilization and soil improvement highly nutrient ashes (sulphite liquor, wood, peat) can be utilized. The use of ashes as a raw material e.g. in metal industry has started to attract attention abroad. Practical problems pertaining to the utilization of ashes are: the varying production rate due to the succession of the seasons, transportation and transfer of dry ashes, and arrangement of the quality control. The above mentioned factors result in expenses but also saving is brought about by using ashes.
- Research Organization:
- Valtion Teknillinen Tutkimuskeskus, Espoo (Finland). Betoni- ja Silikaattitekniikan Lab.
- OSTI ID:
- 5863614
- Report Number(s):
- PB-81-238651
- Country of Publication:
- United States
- Language:
- English
Similar Records
Waste products as highway materials in flexible pavement system
Utilize Cementitious High Carbon Fly Ash (CHCFA) to Stabilize Cold In-Place Recycled (CIR) Asphalt Pavement as Base Coarse
Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ASHES
WASTE PRODUCT UTILIZATION
FLY ASH
FOSSIL-FUEL POWER PLANTS
WASTE MANAGEMENT
BY-PRODUCTS
CONCRETES
CONSTRUCTION
COST
FERTILIZERS
FILLERS
MATERIALS
PAVEMENTS
SOLID WASTES
WASTE DISPOSAL
AEROSOL WASTES
BUILDING MATERIALS
MANAGEMENT
POWER PLANTS
RESIDUES
THERMAL POWER PLANTS
WASTES
010800* - Coal
Lignite
& Peat- Waste Management
320305 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management