Low Cost Fly Ash - Sand Stabilized Roadway Des Moines County, HR-259, 1991

(1991) Low Cost Fly Ash - Sand Stabilized Roadway Des Moines County, HR-259, 1991. Transportation, Department of


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The objectives of this research were to develop a low cost fly ash-sand stabilized roadway and to correlate field performance with pavement design assumptions on a county road heavily trafficked by trucks hauling grain. The road was constructed during the summer of 1984. Three test sections comprised of different base thicknesses were incorporated in the roadway and were tested for compressive stength, structural rating, and rut depth. Annual crack surveys showed no appreciable difference in transverse cracking between the test sections and little to no rutting. The sandbase drainage characteristics beneath the roadway may have contributed to the satisfactory performance of the test sections. This project indicates that in spite of the inflated cost of construction due to the research nature of the work, a fly ash-sand base can be a viable alternative for roadway stabilization.

Item Type: Departmental Report
Keywords: Base course (Pavements), Compressive strength, Fly ash, Pavement design, Performance, Rutting, Sand, Soil stabilization, Test sections, Thickness, Transverse cracking, Trucks, Field performance, Low cost roads, Rut depth, Stabilization
Subjects: Transportation > Pavements
Transportation > Materials
Transportation > Motor vehicles
Transportation > Roads and highways
Transportation > Design and Construction
ID Code: 17062
Deposited By: Iowa DOT Library
Deposited On: 04 Jun 2014 11:42
Last Modified: 12 May 2015 11:39
URI: https://publications.iowa.gov/id/eprint/17062