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Title: EVALUATION OF THREE POLYMER MODIFIED ASPHALT CONCRETES
Accession Number: 00676649
Record Type: Component
Availability: Find a library where document is available Abstract: In 1989, the Oregon Department of Transportation initiated a research study to evaluate the field performance of three polymer modified asphalts. The polymer modified asphalts evaluated included (a) Styrelf, a polymerized binder with a thermoplastic styrene-butadiene block copolymer, (b) AC-20R, a polymerized binder with a thermosetting styrene-butadiene latex anionic polymer, and (c) CA(P)-1, a polymerized binder with a thermoplastic ethylene-vinyl-acetate random copolymer. The three polymer modified asphalt concretes were constructed in five separate test sections adjacent to each other. In addition to the use of polymer modified asphalt, two control sections with a conventional AC-20 asphalt were also constructed for comparison of the performance. A comprehensive evaluation of the materials used on this project and their performance up to June 1993 is presented. Various laboratory tests on binders and mixtures were performed and the results are discussed. Field surveys were conducted annually, and survey results indicate that primary surface distress on all sections is transverse cracking with varying spacing. The level of severity ranged from low to medium. The AC-20 (control) sections showed a more noticeable loss of aggregate than the polymer modified AC sections. In general, both the AC-20 (control) sections and polymer modified (test) sections have been performing well. There is no clear distinction as to which section is superior. As of today, all sections of pavement have carried over 1.5 million equivalent axle loadings.
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: Zhou, HaipingNodes, Scott ENichols, James EPagination: p. 181-192
Publication Date: 1994
Serial: ISBN: 0309060621
Features: Figures
(5)
; References
(15)
; Tables
(5)
TRT Terms: Uncontrolled 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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