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Title: NEW MEXICO STUDY OF INTERLAYERS USED IN REFLECTIVE CRACK CONTROL
Accession Number: 00468580
Record Type: Component
Availability: Find a library where document is available Abstract: The application of an overlay restores the riding quality and skid properties and prolongs the service life of a roadway that has deteriorated. This type of rehabilitation may result in a new problem, reflective cracking, where subsurface cracks propagate into and through the protective overlay. By placing some form of interlayer between the old deteriorated pavement and the new overlay, reflective cracking may be reduced or even prevented. Thus, the useful life of the overlay is increased, resulting in a savings in maintenance costs. New Mexico established several experimental projects under Category 2 experimental construction in which different forms of interlayers were used. A description is provided for seven types of interlayers incorporated into the reported four of the original six projects located throughout the state. For each project, the original pavement structure, the new overlay, and the type of interlayer is given. Also, inspections made at different intervals are summarized. Conclusions derived from the studied projects indicate that interlayers do retard the rate of reflective cracks, implying a savings in maintenance cost. Interlayers do not necessarily prevent crack reflection. Of all the types of interlayers used in the reported projects, one type of paving fabric (Mirafi 140) performed the best at reducing reflective cracks whereas the two types of rubberized asphalt membranes performed second and third best. On one project, it was revealed that two control sections performed just as well as the fabric and the two rubberized asphalt membranes. Out of the three projects with similar weather data, two projects had similar results, and the aforementioned fabric performed best.
Supplemental Notes: Publication of this paper sponsored by Committee on Pavement Rehabilitation. 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 #: 00600551
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Lorenz, Virginia MPagination: p. 94-103
Publication Date: 1987
Serial: ISBN: 0-309-04470-7
Media Type: Print
Features: Figures
(4)
; Maps
(1)
; References
(2)
; Tables
(4)
TRT Terms: Uncontrolled Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Design; Highways; Pavements; Security and Emergencies; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces
Files: TRIS, TRB, ATRI
Created Date: May 31 1988 12:00AM
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