OPERATIONAL AND PERFORMANCE CHARACTERISTICS OF DRUM MIXER PLANTS
A comparison of the long-term performance of mixtures produced by drum mix and conventional batch plants is given. Design, production, construction, and performance data were gathered on asphalt concrete pavements produced by both drum mix and conventional plants from seven States. These include Texas, Georgia, Maine, Michigan, Oregon, Utah, and Arizona. An evaluation of the production data indicate that there are differences between the production processes. On the average, the coefficient of variations were larger for the drum mix plants, especially those plants that did not have the sophisticated controls that are currently available. In addition, there is less aging or hardening of the asphalt during the production process in drum mix plants than batch plants. Results of the long-term performance and distress comparisons, however, indicated that there were no significant differences between production processes. Additional long-term performance and distress comparisons of variations in production details of drum mix plants were made to define specific operational guidelines. Discussions were held with contractors, plant operators and manufacturers to define technological modifications, improvements, and maintenance requirements of these type plants. Based on the findings of these evaluations and discussions, recommendations have been provided to strengthen AASHTO M-156 (ASTM D995-75). (Author)
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Corporate Authors:
Brent Rauhut Engineering Incorporated
912 Prairie Trail
Austin, TX United States 78758Federal Highway Administration
Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
McLean, VA United States 22101 -
Authors:
- Von Quintus, H L
- Kennedy, T W
- Epps, J
- Publication Date: 1984-10
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: 198 p.
Subject/Index Terms
- TRT Terms: Alternatives analysis; Asphalt concrete; Asphalt pavements; Asphalt plants; Coefficients; Concrete hardening; Defects; Drums (Containers); Hardness; Mixers; Mixing plants; Pavement distress; Pavement performance; Pavements; Variables
- Old TRIS Terms: Aging; Variations
- Subject Areas: Construction; Highways; Materials; Pavements; I52: Construction of Pavements and Surfacings;
Filing Info
- Accession Number: 00393799
- Record Type: Publication
- Report/Paper Numbers: FHWA-TS-84-212 Final Rpt., FCP 34ZE 038
- Contract Numbers: DTFH61-81-C-00109
- Files: TRIS, USDOT
- Created Date: Jul 31 1985 12:00AM