PULVERIZED COAL ASH AS STRUCTURAL FILL.

Abstract

Untreated pulverized coal ash, consisting of fly ash with varying percentages of bottom ash, was used as a structural fill material to support the foundation of a new precipitator for a power generating station in Indianapolis, Indiana. Geotechnical studies for this fill included evaluation of index and chemical properties, strength, compressibility, compaction and aging characteristics. Field density and plate load tests were conducted during fill construction. Standard and static cone penetration tests were used to evaluate the consistency of the compacted fill and total settlements of the foundation were measured.