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U.S. Department of Energy
Office of Scientific and Technical Information

Investigation of the use of coal refuse-fly ash compositions as highway base course material. Final report Oct 77-Sep 80

Technical Report ·
OSTI ID:5494928
The need to recycle waste products is becoming more crucial as the cost of their disposal escalates and the availability of conventional materials becomes scarce. Two such by-products of the coal industry, coal refuse and fly ash, have shown promise as construction materials. In view of the projected shift from oil to coal for electric power generation, the already abundant supply of both coal refuse and fly ash is expected to increase along with their disposal cost. This report outlines the findings of a study into the utilization of coal refuse-fly ash compositions as highway base course material. It includes a discussion of the results from an extensive laboratory testing program into the physical and engineering properties of mixtures of these waste products and a comparison of serviceability index and physical damage parameters based on the VESYS Predictive Design Procedure between crushed stone and coal refuse-fly ash compositions. These findings indicate that substituting stabilized coal refuse-fly ash blends in place of conventional base course material is technically and economically feasible. In-service usage of these stabilized mixtures should now be verified by appropriate field testing. The report also presents procedures for developing design mixes and conducting field tests of coal refuse-fly ash base course material.
Research Organization:
GAI Consultants, Inc., Monroeville, PA (USA)
OSTI ID:
5494928
Report Number(s):
PB-82-101940
Country of Publication:
United States
Language:
English