LABORATORY AND FIELD DENSITIES OF HOT-MIX ASPHALTIC CONCRETE IN TEXAS
LABORATORY AND FIELD DATA HAVE BEEN COLLECTED FROM TWELVE REGULAR CONTRACT HOT-MIX ASPHALTIC CONCRETE PAVING PROJECTS IN VARIOUS AREAS OF TEXAS FOR THE PURPOSE OF COMPARING LABORATORY AND FIELD DENSITIES. DATA FROM ROAD SAMPLES TAKEN FROM TWO TO NINE MONTHS AFTER THE ROADS WERE BUILT SHOW THAT FIVE OF THE PAVEMENTS EXCEEDED LABORATORY DENSITY BY 1 TO 3 PERCENT AS DETERMINED BY CALCULATION METHODS CURRENTLY USED BY THE TEXAS HIGHWAY DEPARTMENT. NONE OF THE ROAD SAMPLES MEASURED BY THIS METHOD HAD A DENSITY LOWER THAN 97.2 PERCENT (2.8 PERCENT VOIDS). THE AVERAGE DENSITY OF THE TWELVE DIFFERENT SAMPLES WAS 100.0 PERCENT. THE MAXIMUM DENSITY MEASURED 103+ PERCENT. THE SPECIFIC GRAVITIES OF THE MIXES WERE THEN REDETERMINED SO AS TO INCLUDE MOST OF THE ABSORPTION OF ASPHALT CEMENT BY THE AGGREGATE. THESE DATA SHOW AN AVERAGE OF 94.6 PERCENT, WITH A MAXIMUM OF 97.3 PERCENT. THE RANGE OF DIFFERENCES BROUGHT OUT BY THE TWO METHODS WAS FROM 1.9 TO 12.7 PERCENT. DATA ON MIX DESIGN, TRAFFIC AND FIELD CONSTRUCTION ARE INCLUDED FOR BACKGROUND INFORMATION. /AUTHOR/
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Supplemental Notes:
- No 251, pp 12-17, 3 TAB, 12 REF 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:
- Gallaway, Bob M
- Publication Date: 1960
Media Info
- Media Type: Digital/other
- Pagination: 6p
- Monograph Title: Asphaltic concrete construction - field and laboratory studies
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Serial:
- Highway Research Board Bulletin
- Issue Number: 251
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Asphalt concrete; Asphalt pavements; Bituminous mixtures; Density; Field tests; Hot mix asphalt; Laboratory tests; Measurement; Specific gravity
- Old TRIS Terms: Specific gravity tests
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 00211321
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Aug 28 1994 12:00AM