Design and testing controlled low-strength materials (CLSM) using clean coal ash
- Univ. of Wisconsin, Milwaukee, WI (United States)
- Manitowoc Public Utilities, WI (United States)
- Wisconsin Electric Power Co., Milwaukee, WI (United States)
The major objective of this project was to develop mixture proportions for controlled low-strength material (CLSM) using clean coal ash obtained from atmospheric fluidized bed combustion (AFBC). A clean coal ash is defined as the ash derived from SO{sub x} and NO{sub x} control technologies. The specific ashes used for this project were: (1) circulating fluidized bed boiler fly ash and bottom ash and (2) stoker-type boiler fly ash and bottom ash. These two coal ash samples were characterized for physical and chemical properties. Chemical properties and water leaching tests were also performed on the hardened CLSM. Many initial CLSM mixtures were developed by blending the two types of ash. Tests conducted on the final three selected CLSM mixtures included compressive strength, bleeding, setting and hardening, settlement, length change of hardened CLSM, permeability, mineralogy, and chemical water leach testing. Results show that acceptable CLSM material can be developed by blending the fluidized bed boiler ash with the stoker boiler ash. Recommendations for a pilot scale manufacturing application of the three CLSM mixtures were made based upon the lab test results.
- OSTI ID:
- 651164
- Report Number(s):
- CONF-970675-; ISBN 0-8031-2477-5; TRN: IM9826%%120
- Resource Relation:
- Conference: American Society for Testing and Materials (ASTM) symposium on the design and application of CLSM (flowable fill), St. Louis, MO (United States), 19-20 Jun 1997; Other Information: PBD: 1998; Related Information: Is Part Of The design and application of controlled low-strength materials (flowable fill); Howard, A.K.; Hitch, J.L. [eds.]; PB: 351 p.; ASTM special technical publication, 1331
- Country of Publication:
- United States
- Language:
- English
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