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What is it?
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Coal fly ash is a byproduct of burning coal. It is
an abundant waste material in much of the world, although not in Maine
where coal burning isn't used for power.
- General Info |
Beneficial Uses
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- Raw material in a cement kiln
- Additive to cement clinker prior to grinding
- Addition to concrete mix as a partial replacement for cement
- Lightweight aggregate
- Controlled low-strength material (flowable fill)
- Autoclaved cellular concrete
- Structural fill
- Landfill cover
- Water treatment
- Soil stabilization and modification
- Beneficial Uses
- Case Studies |
Properties
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- Spherical shaped particles for improved flowability and workability
- Increased ultimate strength
- Reduces bleeding, shrinkage, and permeability
- Resists alkali-aggregate and sulfate attack
- Lower heat of hydration
- Reduced corrosion of reinforcing steel
- Less expensive than cement
- Engineering Properties
- Environmental Properties |
Producers
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- Coal burning boilers and power plants
- Current Disposal
- Material Source
- Economic Template
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