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Title: Research Pays Off: Preventing Pavement Failure Caused by Hot-Mix Asphalt Temperature Differentials: Washington State's Systematic Approach
Accession Number: 01036669
Record Type: Component
Availability: Find a library where document is available Abstract: Large numbers of hot-mix asphalt (HMA) paving projects in Washington have experienced what is generally called cyclic or end-of-load segregation, a cyclic occurrence of low-density areas in the mat. These low-density areas tend to fail prematurely through fatigue cracking, raveling, or both. Observations found the cause to be construction-related temperature differentials that produce low-density areas. Although patching provides temporary relief, the remedy is to resurface earlier than anticipated. The Washington State Department of Transportation research on this problem has culminated in the development of a rational specification. It is roughly estimated that the savings from use of this specification would amount to approximately $9 million per year.
Supplemental Notes: 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
Language: English
Authors: Muench, Stephen TWilloughby, KimPagination: pp 26-28
Publication Date: 2006-9
Serial: Media Type: Print
Features: Figures
(2)
; Photos
(1)
TRT Terms: Identifier Terms: Uncontrolled Terms: Subject Areas: Construction; Finance; Highways; I52: Construction of Pavements and Surfacings
Files: TRIS, TRB
Created Date: Nov 2 2006 9:27AM
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