Alternative Flexible Overlays, HR-229, Construction Report, 1983

(1983) Alternative Flexible Overlays, HR-229, Construction Report, 1983. Transportation, Department of


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The object of this research project is to construct and evaluate several bituminous concrete base overlays with various high penetration bituminous products which have the potential to reduce future maintenance and construction costs. In September of 1981 nine different bituminous test sections were constructed on Osceola County roads A-34 and A-46 east of Ashton. Asphalt binders used were AC-5 asphalt cement, SC-800 liquid asphalt, MC-3000 cutback asphalt, CSS-1 emulsion and HFMS-2 emulsion. Aggregate for four of the test sections consisted of salvaged bituminous pavement and new aggregate combined. Each section was road mixed using a different binder arid placed 2-1/4" thick with a motor patrol. The other five test sections consisted of an AC-5 Type B asphalt concrete control section and four plant-mixed, cold-laid bituminous concrete overlay sections using new aggregate. The material was mixed in a continuous drum mix plant and laid with a full width paver.

Item Type: Departmental Report
Keywords: Asphalt pavements, Emulsified asphalt, Liquid asphalt, Cracking of asphalt concrete pavements, Transverse cracking, Temperature, Bituminous overlays
Subjects: Transportation > Pavements
Transportation > Materials
Transportation > Roads and highways
Transportation > Research
Transportation > Design and Construction
ID Code: 22163
Deposited By: Iowa DOT Library
Deposited On: 24 May 2016 14:53
Last Modified: 24 May 2016 14:53