Tests and specifications pertinent to coal ash utilization
Fortunately, in the United States, most of the test methods and specifications for the use of coal ash in cement, concrete, lime, or soil-related products are found in the American Society for Testing and Materials (ASTM) books of standards. Many of the same or slightly different specifications are also found in the American Association of State Highway and Transportation Officials (AASHTO) books of standards, as well as those of the various Departments of Transportation (DOTs). Other specifications for selected uses are found in publications of the American Petroleum Institute (API), the Sulfur Institute, the mineral wool industry, and West Virginia University. It is difficult to keep up with the most recent printed specifications, particularly in ASTM, since the committees meet twice yearly and have many time-consuming ballots. This paper summarizes the critical engineering properties required to assess the utilization applications of coal ash products. For most uses, both physical and chemical limits are specified. There are specifications for blended cement containing fly ash, for sulfate resistance, and for alkali aggregate reaction, also for fly ash for use in concrete, in oil well cement, and in grout. Coal ash is specified for use in ash-lime stabilization, as lightweight aggregate, and for mineral filler, as well as for structural fill and flowable fill. Other uses include sulfur concrete, high flexural strength ceramics, mineral wool, brick, cenospheres, and filler.
- OSTI ID:
- 43144
- Report Number(s):
- CONF-940930-; TRN: IM9521%%309
- Resource Relation:
- Conference: 11. annual international Pittsburgh coal conference: coal, energy and the environment, Pittsburgh, PA (United States), 12-16 Sep 1994; Other Information: PBD: 1994; Related Information: Is Part Of Eleventh annual international Pittsburgh coal conference proceedings: Volume 1; Chiang, S.H. [ed.]; PB: 828 p.
- Country of Publication:
- United States
- Language:
- English
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