AN EVALUATION OF LOWER MIXING TEMPERATURES FOR BITUMINOUS PAVING MIXES
The primary objective of this project is to investigate the economic potential and the engineering properties of hot plant mixed bituminous mixes produced at lower than normal mixing temperatures. This was accomplished by monitoring plant and field operations of a hot bituminous paving project in which approximately 52 percent of the base and binder courses were mixed at 225 deg F (plus or minus 25 deg F) instead of the normal 300 deg F (plus or minus 25 deg F). No significant changes were noted in the engineering properties between the normal and lower temperature mixes. Plant and field conditions were not adversely affected. An energy analysis pointed out a 20.6 percent reduction in energy consumption, largely due to savings of dryer fuel. The state realized no direct financial benefit from the procedure since the regular and lower temperature mixes were bid at the same price. (FHWA)
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Corporate Authors:
Mississippi State Highway Department
P.O. Box 1850
Jackson, MI United States 39215Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Crawley, A B
- Publication Date: 1981-6
Media Info
- Pagination: n.p.
Subject/Index Terms
- TRT Terms: Bituminous mixtures; Dryer drum process; Energy conservation; Hot mix asphalt; Mixing; Performance; Properties of materials; Reduction (Chemistry); Temperature
- Uncontrolled Terms: Field performance
- Old TRIS Terms: Mixing temperature; Reduction
- Subject Areas: Energy; Environment; Highways; Materials; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 00341302
- Record Type: Publication
- Report/Paper Numbers: MSHD-RD-81-069-I Intrm Rpt.
- Files: TRIS, USDOT, STATEDOT
- Created Date: Dec 22 1981 12:00AM