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Title: STUDY OF TEMPERATURE VARIATION IN HOT-MIX ASPHALT BASE, SURFACE COURSE AND SUBGRADE
Accession Number: 00210605
Record Type: Component
Abstract: A STUDY OF TEMPERATURE VARIATION IN A 7-IN. THICK ASPHALT PAVEMENT AND THE UNDERLYING SOIL WAS CARRIED ON IN MICHIGAN THROUGH THE COOPERATIVE EFFORTS OF LEONARD REFINERIES OF ALMA, MICHIGAN, AND THE MICHIGAN ASPHALT PAVING ASSOCIATION FROM JUNE 1963 THROUGH APRIL 1965. AN EXPERIMENTAL HOT-MIX BASE OR BLACK BASE PAVEMENT WAS CONSTRUCTED. THERMOCOUPLES WERE PLACED AT 4 LEVELS IN THE PAVEMENT AND AT 3 LEVELS IN THE SUBGRADE. TEMPERATURES WERE READ EACH DAY TO DETERMINE THE MAXIMUM TEMPERATURES IN THE BLACK BASE AND THE WEARING COURSE. BECAUSE OF THE ERRATIC RESULTS OBTAINED FROM STABILITY TESTS OF THE BLACK BASE MIXES, IT WAS FELT NECESSARY TO KNOW THE MAXIMUM TEMPERATURES WHICH COULD BE EXPECTED IN THE BASE COURSES. A RECORDING PYROMETER WAS INSTALLED WHICH WOULD RECORD NOT ONLY MAXIMUM TEMPERATURES BUT THE VARIATION BETWEEN MAXIMUM AND MINIMUM ON A 24-HR BASIS. DATA OBTAINED INDICATED THAT THE MAXIMUM TEMPERATURE IN THE BLACK BASE WILL NOT EXCEED 120 DEG. THE INSULATING VALUE AND HEAT-ABSORBING ABILITY OF THE THICK ASPHALT PAVEMENT IS QUITE EVIDENT IN THE FIGURES SHOWING WINTER TEMPERATURE VARIATION. A DEFINITE REDUCTION IN FROST PENETRATION INTO THE SUBGRADE IS INDICATED.
Supplemental Notes: Paper sponsored by Committee on Bituminous Aggregates Bases and presented at the 45th 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.
Monograph Title: Monograph Accession #: 01410102
Authors: Manz, Glenn PPagination: pp 12-19
Publication Date: 1966
Serial: Media Type: Digital/other
Features: Figures
(5)
TRT Terms:
Asphalt pavements; Bituminous aggregates; Electric insulating materials; Experimental roads; Frost; Hot mix asphalt; Insulating materials; Recording instruments; Reduction (Chemistry); Subgrade (Pavements); Surface course (Pavements); Temperature; Temperature measurement; Temperature measuring instruments; Thermocouples; Variables
Uncontrolled Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Construction; Highways; Materials
Files: TRIS, TRB
Created Date: Nov 18 1994 12:00AM
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