National Academies Press: OpenBook

Fiber Additives in Asphalt Mixtures (2015)

Chapter: Front Matter

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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2015. Fiber Additives in Asphalt Mixtures. Washington, DC: The National Academies Press. doi: 10.17226/22191.
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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2015. Fiber Additives in Asphalt Mixtures. Washington, DC: The National Academies Press. doi: 10.17226/22191.
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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2015. Fiber Additives in Asphalt Mixtures. Washington, DC: The National Academies Press. doi: 10.17226/22191.
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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2015. Fiber Additives in Asphalt Mixtures. Washington, DC: The National Academies Press. doi: 10.17226/22191.
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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2015. Fiber Additives in Asphalt Mixtures. Washington, DC: The National Academies Press. doi: 10.17226/22191.
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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2015. Fiber Additives in Asphalt Mixtures. Washington, DC: The National Academies Press. doi: 10.17226/22191.
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92+ pages; Perfect Bind with SPINE COPY = 14 pts Fiber Additives in Asphalt Mixtures NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM NCHRP SYNTHESIS 475 NEED SPINE WIDTH Job No. XXXX Pantone 202 C TRANSPORTATION RESEARCH BOARD 500 F ifth S treet, N .W . W ashing to n, D .C . 20001 A D D R ESS SER VICE R EQ UESTED A Synthesis of Highway Practice

NEED SPINE WIDTH Abbreviations used without definitions in TRB publications: A4A Airlines for America AAAE American Association of Airport Executives AASHO American Association of State Highway Officials AASHTO American Association of State Highway and Transportation Officials ACI–NA Airports Council International–North America ACRP Airport Cooperative Research Program ADA Americans with Disabilities Act APTA American Public Transportation Association ASCE American Society of Civil Engineers ASME American Society of Mechanical Engineers ASTM American Society for Testing and Materials ATA American Trucking Associations CTAA Community Transportation Association of America CTBSSP Commercial Truck and Bus Safety Synthesis Program DHS Department of Homeland Security DOE Department of Energy EPA Environmental Protection Agency FAA Federal Aviation Administration FHWA Federal Highway Administration FMCSA Federal Motor Carrier Safety Administration FRA Federal Railroad Administration FTA Federal Transit Administration HMCRP Hazardous Materials Cooperative Research Program IEEE Institute of Electrical and Electronics Engineers ISTEA Intermodal Surface Transportation Efficiency Act of 1991 ITE Institute of Transportation Engineers MAP-21 Moving Ahead for Progress in the 21st Century Act (2012) NASA National Aeronautics and Space Administration NASAO National Association of State Aviation Officials NCFRP National Cooperative Freight Research Program NCHRP National Cooperative Highway Research Program NHTSA National Highway Traffic Safety Administration NTSB National Transportation Safety Board PHMSA Pipeline and Hazardous Materials Safety Administration RITA Research and Innovative Technology Administration SAE Society of Automotive Engineers SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005) TCRP Transit Cooperative Research Program TEA-21 Transportation Equity Act for the 21st Century (1998) TRB Transportation Research Board TSA Transportation Security Administration U.S.DOT United States Department of Transportation r i ti it t fi iti i li ti : irli f r ri ri i ti f ir rt ti ri i ti f t t i ffi i l ri i ti f t t i r rt ti ffi i l I ir rt il I t r ti l rt ri ir rt r ti r r r ri it i iliti t ri li r rt ti i ti ri i t f i il i r ri i t f i l i r ri i t f r ti t ri l ri r i i ti it r rt ti i ti f ri r i l r f t t i r r rt t f l rit rt t f r ir t l r t ti r l i ti i i tr ti r l i i i tr ti r l t r rri r f t i i tr ti r l ilr i i tr ti r l r it i i tr ti r t ri l r ti r r r I I tit t f l tri l l tr i i r I I t r l rf r rt ti ffi i t f I I tit t f r rt ti i r - i f r r r i t t t r t ( ) ti l r ti i i tr ti ti l i ti f t t i ti ffi i l ti l r ti r i t r r r ti l r ti i r r r ti l i r ffi f t i i tr ti ti l r rt ti f t r i li r t ri l f t i i tr ti I r I ti l i i tr ti i t f t ti i r - f , t l , l i l , ffi i t r rt ti it t: f r r ( ) r it r ti r r r - r rt ti it t f r t t t r ( ) r rt ti r r r rt ti rit i i tr ti . . it t t rt t f r rt ti

TRANSPORTATION RESEARCH BOARD WASHINGTON, D.C. 2015 www.TRB.org NAT IONAL COOPERAT IVE H IGHWAY RESEARCH PROGRAM NCHRP SYNTHESIS 475 Research Sponsored by the American Association of State Highway and Transportation Officials in Cooperation with the Federal Highway Administration Su b S c ri b e r ca te g o ri e S Highways • Materials Fiber Additives in Asphalt Mixtures A Synthesis of Highway Practice con S u ltan t Rebecca S. McDaniel Purdue University West Lafayette, Indiana

NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM Systematic, well-designed research provides the most effective approach to the solution of many problems facing highway administrators and engineers. Often, highway problems are of local interest and can best be studied by highway departments individually or in cooperation with their state universities and others. However, the accelerating growth of highway transportation develops increasingly complex problems of wide interest to highway authorities. These problems are best studied through a coordinated program of cooperative research. In recognition of these needs, the highway administrators of the American Association of State Highway and Transportation Officials initiated in 1962 an objective national highway research program employing modern scientific techniques. This program is supported on a continuing basis by funds from participating member states of the Association and it receives the full cooperation and support of the Federal Highway Administration, United States Department of Transportation. The Transportation Research Board of the National Research Council was requested by the Association to administer the research program because of the Board’s recognized objectivity and understanding of modern research practices. The Board is uniquely suited for this purpose as it maintains an extensive committee structure from which authorities on any highway transportation subject may be drawn; it possesses avenues of communication and cooperation with federal, state, and local governmental agencies, universities, and industry; its relationship to the National Research Council is an insurance of objectivity; it maintains a full-time research correlation staff of specialists in highway transportation matters to bring the findings of research directly to those who are in a position to use them. The program is developed on the basis of research needs identified by chief administrators of the highway and transportation departments and by committees of AASHTO. Each year, specific areas of research needs to be included in the program are proposed to the National Research Council and the Board by the American Association of State Highway and Transportation Officials. Research projects to fulfill these needs are defined by the Board, and qualified research agencies are selected from those that have submitted proposals. Administration and surveillance of research contracts are the responsibilities of the National Research Council and the Transportation Research Board. The needs for highway research are many, and the National Cooperative Highway Research Program can make significant contributions to the solution of highway transportation problems of mutual concern to many responsible groups. The program, however, is intended to complement rather than to substitute for or duplicate other highway research programs. NOTE: The Transportation Research Board of the National Academies, the National Research Council, the Federal Highway Administration, the American Association of State Highway and Transportation Officials, and the individual states participating in the National Cooperative Highway Research Program do not endorse products or manufacturers. Trade or manufacturers’ names appear herein solely because they are considered essential to the object of this report. NCHRP SYNTHESIS 475 Project 20-05 (Topic 45-15) ISSN 0547-5570 ISBN 978-0-309-27177-6 Library of Congress Control No. 2015932061 © 2015 National Academy of Sciences. All rights reserved. COPYRIGHT INFORMATION Authors herein are responsible for the authenticity of their manuscripts and for obtaining written permissions from publishers or persons who own the copyright to any previously published or copyrighted material used herein. Cooperative Research Programs (CRP) grants permission to reproduce material in this publication for classroom and not-for-profit purposes. Permission is given with the understanding that none of the material will be used to imply TRB, AASHTO, FAA, FHWA, FMSCA, FTA, or Transit development Corporation endorsement of a particular product, method, or practice. It is expected that those reproducing the material in this document for educational and not-for-profit uses will give appropriate acknowledgment of the source of any development or reproduced material. For other uses of the material, request permission from CRP. NOTICE The project that is the subject of this report was a part of the National Co-operative Highway Research Program conducted by the Transportation Research Board with the approval of the Governing Board of the National Research Council. Such approval reflects the Governing Board’s judgment that the program concerned is of national importance and appropriate with respect to both the purposes and resources of the National Research Council. The members of the technical committee selected to monitor this project and to review this report were chosen for recognized scholarly competence and with due consideration for the balance of disciplines appropriate to the project. The opinions and conclusions expressed or implied are those of the research agency that performed the research, and, while they have been accepted as appropriate by the technical committee, they are not necessarily those of the Transportation Research Board, the National Research Council, the American Association of State Highway and Transportation Officials, or the Federal Highway Administration of the U.S. Department of Transportation. Each report is reviewed and accepted for publication by the technical committee according to procedures established and monitored by the Transportation Research Board Executive Committee and the Governing Board of the National Research Council. Published reports of the NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM are available from: Transportation Research Board Business Office 500 Fifth Street, NW Washington, DC 20001 and can be ordered through the Internet at: http://www.national-academies.org/trb/bookstore Printed in the United States of America

THE NATIONAL ACADEMIES Advisers to the Nation on Science, Engineering, and Medicine The National Academy of Sciences is a private, nonprofit, self-perpetuating society of distinguished schol- ars engaged in scientific and engineering research, dedicated to the furtherance of science and technology and to their use for the general welfare. Upon the authority of the charter granted to it by the Congress in 1863, the Academy has a mandate that requires it to advise the federal government on scientific and techni- cal matters. Dr. Ralph J. Cicerone is president of the National Academy of Sciences. The National Academy of Engineering was established in 1964, under the charter of the National Acad- emy of Sciences, as a parallel organization of outstanding engineers. It is autonomous in its administration and in the selection of its members, sharing with the National Academy of Sciences the responsibility for advising the federal government. The National Academy of Engineering also sponsors engineering programs aimed at meeting national needs, encourages education and research, and recognizes the superior achieve- ments of engineers. Dr. C. D. Mote, Jr., is president of the National Academy of Engineering. The Institute of Medicine was established in 1970 by the National Academy of Sciences to secure the services of eminent members of appropriate professions in the examination of policy matters pertaining to the health of the public. The Institute acts under the responsibility given to the National Academy of Sciences by its congressional charter to be an adviser to the federal government and, upon its own initiative, to identify issues of medical care, research, and education. Dr. Victor J. Dzau is president of the Institute of Medicine. The National Research Council was organized by the National Academy of Sciences in 1916 to associate the broad community of science and technology with the Academy’s purposes of furthering knowledge and advising the federal government. Functioning in accordance with general policies determined by the Acad- emy, the Council has become the principal operating agency of both the National Academy of Sciences and the National Academy of Engineering in providing services to the government, the public, and the scientific and engineering communities. The Council is administered jointly by both Academies and the Institute of Medicine. Dr. Ralph J. Cicerone and Dr. C. D. Mote, Jr., are chair and vice chair, respectively, of the National Research Council. The Transportation Research Board is one of six major divisions of the National Research Council. The mission of the Transportation Research Board is to provide leadership in transportation innovation and progress through research and information exchange, conducted within a setting that is objective, interdisci- plinary, and multimodal. The Board’s varied activities annually engage about 7,000 engineers, scientists, and other transportation researchers and practitioners from the public and private sectors and academia, all of whom contribute their expertise in the public interest. The program is supported by state transportation departments, federal agencies including the component administrations of the U.S. Department of Transporta- tion, and other organizations and individuals interested in the development of transportation. www.TRB.org www.national-academies.org

TOPIC PANEL 45-15 DANIEL CLARK, Pennsylvania Department of Transportation, Harrisburg ESHAN V. DAVE, University of New Hampshire, Durham FREDERICK HEJL, Transportation Research Board JULIE E. KLIEWER, Arizona Department of Transportation, Phoenix PAMELA MARKS, Ministry of Transportation, Ontario (MTO), Downsview, ON, Canada LARRY L. MICHAEL, LLM Asphalt Technology Consulting, Hagerstown, MD JAMES A. MUSSELMAN, Florida Department of Transportation, Gainesville KIM A. WILLOUGHBY, Washington State Department of Transportation, Olympia NELSON H. GIBSON, Federal Highway Administration (Liaison) SYNTHESIS STUDIES STAFF STEPHEN R. GODWIN, Director for Studies and Special Programs JON M. WILLIAMS, Program Director, IDEA and Synthesis Studies JO ALLEN GAUSE, Senior Program Officer GAIL R. STABA, Senior Program Officer DONNA L. VLASAK, Senior Program Officer TANYA M. ZWAHLEN, Consultant DON TIPPMAN, Senior Editor CHERYL KEITH, Senior Program Assistant DEMISHA WILLIAMS, Senior Program Assistant DEBBIE IRVIN, Program Associate COOPERATIVE RESEARCH PROGRAMS STAFF CHRISTOPHER W. JENKS, Director, Cooperative Research Programs CHRISTOPHER HEDGES, Manager, National Cooperative Highway Research Program EILEEN P. DELANEY, Director of Publications NCHRP COMMITTEE FOR PROJECT 20-05 CHAIR BRIAN A. BLANCHARD, Florida DOT MEMBERS STUART D. ANDERSON, Texas A&M University SOCORRO “COCO” BRISENO, California Department of Transportation CYNTHIA L. GERST, Ohio Department of Transportation DAVID M. JARED, Georgia Department of Transportation MALCOLM T. KERLEY, Virginia Department of Transportation (retired) JOHN M. MASON, JR., Auburn University CATHERINE NELSON, Salem, Oregon ROGER C. OLSON, Minnesota Department of Transportation BENJAMIN I. ORSBON, South Dakota Department of Transportation RANDALL R. “RANDY” PARK, Utah Department of Transportation ROBERT L. SACK, New York State Department of Transportation JOYCE N. TAYLOR, Maine Department of Transportation FRANCINE SHAW WHITSON, Federal Highway Administration FHWA LIAISONS JACK JERNIGAN MARY LYNN TISCHER TRB LIAISON STEPHEN F. MAHER Cover figure: Close-up of polymer fibers in a stone matrix asphalt mixture. Photo by: Krzysztof Blazejowski.

Highway administrators, engineers, and researchers often face problems for which information already exists, either in documented form or as undocumented experience and practice. This information may be fragmented, scattered, and unevaluated. As a consequence, full knowledge of what has been learned about a problem may not be brought to bear on its solution. Costly research findings may go unused, valuable experience may be overlooked, and due consideration may not be given to recommended practices for solving or alleviating the problem. There is information on nearly every subject of concern to highway administrators and engineers. Much of it derives from research or from the work of practitioners faced with problems in their day-to-day work. To provide a systematic means for assembling and evaluating such useful information and to make it available to the entire highway community, the American Association of State Highway and Transportation Officials— through the mechanism of the National Cooperative Highway Research Program— authorized the Transportation Research Board to undertake a continuing study. This study, NCHRP Project 20-5, “Synthesis of Information Related to Highway Problems,” searches out and synthesizes useful knowledge from all available sources and prepares concise, documented reports on specific topics. Reports from this endeavor constitute an NCHRP report series, Synthesis of Highway Practice. This synthesis series reports on current knowledge and practice, in a compact format, without the detailed directions usually found in handbooks or design manuals. Each report in the series provides a compendium of the best knowledge available on those measures found to be the most successful in resolving specific problems. The report documents the current state of the practice regarding the use of fiber additives in asphalt mixtures. It outlines the many types of fibers that have been used, their properties and how they are tested, mix design tests for fiber mixes, the types of applications in which fibers have been used, and lab and performance of fiber mixes. This synthesis can aid state asphalt engineers and researchers on the use of fibers. A literature review and detailed survey responses from 48 of 50 state agencies, yielding a response rate of 96%, are provided. Also, six case examples offer more detailed information on the use of fibers. Rebecca S. McDaniel, Purdue University, West Lafayette, Indiana, collected and synthesized the information and wrote the report. The members of the topic panel are acknowledged on the preceding page. This synthesis is an immediately useful document that records the practices that were acceptable with the limitations of the knowledge available at the time of its preparation. As progress in research and practice continues, new knowledge will be added to that now at hand. FOREWORD PREFACE By Donna L. Vlasak Senior Program Officer Transportation Research Board

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TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 475: Fiber Additives in Asphalt Mixtures summarizes the types of fibers used in asphalt mixtures, their properties, how they are tested, how they are applied, and lab and field performance of the fiber mixes.

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