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Title: EFFECT OF MOISTURE ON LOW-TEMPERATURE ASPHALT MIXTURE PROPERTIES AND THERMAL-CRACKING PERFORMANCE OF PAVEMENTS
Accession Number: 00676639
Record Type: Component
Availability: Find a library where document is available Abstract: Effects of moisture on asphalt mixtures were evaluated by determining the fundamental low-temperature properties of field cores from 22 field test sections at two different levels of moisture, to get an indication of how much these properties may have changed during the pavements' service. The idea was to introduce moisture into the mixtures without causing significant breakdown of the mixtures from stripping or disintegration. The indirect tensile creep and failure test at low temperature, which was selected by the Strategic Highway Research Program (SHRP) to support the mixture specification for thermal cracking, was performed on field cores at two temperatures and two levels of moisture. Master compliance curves and fracture properties were generated and compared to evaluate changes in fundamental low-temperature properties at two different levels of moisture. The properties were input into a thermal-cracking model that was developed at Penn State and is now part of the SHRP SUPERPAVE software in order to determine whether the differences in properties had an effect on thermal-cracking performance in the field. The key finding was that changes in moisture condition within asphalt mixtures have a significant effect on the low-temperature properties of asphalt mixtures and may have a significant effect on the thermal-cracking performance of asphalt pavements. Changes in properties and performance occur even when moisture does not damage the mixture significantly.
Supplemental Notes: This paper appears in Transportation Research Record No. 1454, Asphalt Concrete Mixture Design and Performance. 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 #: 01401258
Language: English
Authors: Kim, NamboRoque, ReynaldoHiltunen, DennisPagination: p. 82-88
Publication Date: 1994
Serial: ISBN: 0309060621
Features: Figures
(14)
; References
(10)
; Tables
(1)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials
Files: TRIS, TRB, ATRI
Created Date: Apr 21 1995 12:00AM
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