REDUCED MIXING TIME FOR ASPHALT CONCRETE MIXES
AS A RESULT OF 1963-64 STUDIES OF MIXING TIMES IN ASPHALT PLANTS, THE NEW YORK STATE DEPARTMENT OF TRANSPORTATION REDUCED ITS DRY AND WET MIX TIME SPECIFICATION REQUIREMENTS BY VARYING AMOUNTS, DEPENDING ON PLANT SIZE AND MIX TYPE BEING PRODUCED. TYPICALLY, HOWEVER, THESE TIMES NOW TOTAL 10 SEC DRY AND 35 SEC SET MIXING, REGARDLESS OF MIX TYPE BEING PRODUCED. INDIVIDUAL PLANT DESIGN AND CONDITION INFLUENCE TIME REQUIREMENTS FOR ADEQUATE DISTRIBUTION AND ASPHALT COATING OF AGGREGATE PARTICLES, NECESSITATING PLANT-BY-PLANT TESTING TO QUALIFY FOR NEW REDUCED TIMES. IMPLICATIONS FOR FUTURE MANUFACTURE OF MIXING PLANTS AND FOR PRODUCER EFFICIENCY ARE DISCUSSED. AT PRESENT, ONE-THIRD OF ASPHALT PLANTS SUPPLYING MIX FOR STATE CONTRACTS HAVE REQUESTED AND RECEIVED PERMISSION TO REDUCE MIXING TIME, ACCOUNTING FOR A MAJOR PORTION OF THE MIX BEING PRODUCED. /AUTHOR/
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Supplemental Notes:
- Paper sponsored by Committee on Construction Practices--Flexible Pavement and presented at the 47th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Graham, Malcolm D
- Burnett, William C
- Thomas, Jerome J
- Clark III, William H
- Publication Date: 1968
Media Info
- Media Type: Print
- Features: Appendices; Figures; References; Tables;
- Pagination: pp 1-17
- Monograph Title: Construction practices and nuclear testing
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Serial:
- Highway Research Record
- Issue Number: 248
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Asphalt concrete; Bituminous aggregates; Mixing; Mixing plants; Time
- Old TRIS Terms: Bituminous mixing plants; Mixing time
- Subject Areas: Construction; Highways; Materials;
Filing Info
- Accession Number: 00215141
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Jan 23 1994 12:00AM