Performance of Fly Ash as a Base Material on Six Test Pavements in the Atlanta District (7-2966-S)
Author(s):
C.K. Estakhri
Publication Date:
November 2004
Abstract:
The Atlanta District first began evaluating crushed fly ash, or hydrated fly ash, as a base material in 1990. Hydrated fly ash is produced by allowing a Class C powder fly ash (ASTM C 618) from coal-fired power plants to cure with moisture. The hydrated (cured) fly ash becomes a stiff material that can be crushed to form a synthetic aggregate. When properly processed and compacted to optimum moisture content, the hydrated fly ash continues to gain strength after placement as a base material.
Based on early promising test results from the district's laboratory investigation and from the successful construction of a test section on the power plant haul road, six test pavements were constructed throughout the district:
Report Number:
7-2966-S
Keywords:
Durability of Surface Treatments as the Wearing Course Placed on Crushed Fly Ash and Long-Term Performance of Crushed Fly Ash for Flexible Base
Electronic Link(s):
Document/Product: http://tti.tamu.edu/documents/7-2966-S.pdf
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