PERMEABILITY OF FLY ASH STABILIZED SOILS
Two soils, an organic clay and a sand were stabilized with the fly ash. Twenty percent fly ash increased modified compaction density by .10 g/cc in the clay and .32 g/cc in the sand. Unconfined compressive strengths with 20% fly ash increased by 15.5 kg/sq cm in clay and 51 kg/sq cm in sand when compacted immediately and cured 7 days. As the percent of fly ash increases, the permeability of soil-fly ash mixtures decreases. For 100% fly ash samples, cracks developed in the samples creating secondary permeability of 1.2 x .001 cm/sec. Cracks in 100% fly ash samples were due to a reaction in the self hardening fly ash. Permeability decreased with time within the first seven days. Effluent from the tests had a high pH, alkalinity, and dissolved solids concentrations.
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Supplemental Notes:
- Proceedings of the Conference on Geotechnical Practices for Disposal of Solid Waste Materials, University of Michigan, Ann Arbor, Michigan, June 13-15, 1977.
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Corporate Authors:
American Society of Civil Engineers
345 East 47th Street
New York, NY United States 10017-2398 -
Authors:
- Parker, D G
- Thornton, S I
- Cheng, C W
- Conference:
- Publication Date: 1977
Media Info
- Pagination: p. 63-70
Subject/Index Terms
- TRT Terms: Clay; Compaction; Compressive strength; Fly ash; Fracture mechanics; Organic soils; Permeability; pH value; Soil stabilization; Soils; Testing
- Uncontrolled Terms: Stabilization
- Old TRIS Terms: Unconfined compression tests
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00170291
- Record Type: Publication
- Source Agency: Engineering Index
- Report/Paper Numbers: Proceeding
- Files: TRIS
- Created Date: Mar 29 1978 12:00AM