Contents

FOREWORD ,.........................................STRATEGIC HIGHWAY RESEARCH PROGRAM ORGANIZATION .........................................STRATEGIC HIGHWAY RESEARCH PROGRAM TASK FORCE AND ADVISORY COMMITTEES..............

LIST OF ABBREVIATIONS , ,..................

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OVERVIEWANDINTEGRATIONREPORT ,................................................. 1

TechnicalResearch

AreaDetailed Planning for Research on Asphalt Properties , I

Detailed Planning for Research on Long-Term Pavement Performance............................

Detailed Planning for Research on M8intenance Effectiveness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2

3

Detailed Planning for Research on Bridge Component Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Detailed Planning for Research on Cement and Concrete ... ,.............................

4

5'

Detailed Planning for Research on Snow and Ice Control on Highways and Bridges. . . . . . . . . . . . . . . 6

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The Strategic Highway Research Program was originally proposed in TRB Special Report 202, "America's Highways:Accelerating the Search for Innovation," published in June 1984. The report contained the findings of the StrategicTransportation Research Study sponsored by the Federal Highway Administration and conducted by the TransportationResearch Board. It documented the need for a concerted research effort to produce. major innovations for increasing theproductivity and safety of the nation's highway system, and it recommended a $150 million, five-year program of researchfocused on six high-priority areas where the nation spends most of the $50 billion used for roads each year.

Both the American Association of State Highway and Transportation Officials and the Federal Highway Administrationenthusiastically accepted the recommendations and initiated steps to have 0.25 percent of federal-aid highway fundsearmarked for support of the program in fiscal years 1987 through 1991. Over a period of about 12 months starting inMarch 1985, a major effort, directed by the SHRP Task Force, has been focused on the development of detailed plans forthe research program. This report documents the results of that effort.

The Report represents an important milepost on the path of progress for the Strategic Highway Research Program.Seven contract agencies, each supported by an advisory committee of representatives from the highway community, haveworked intensively for almost one year to develop well-defined plans for the performance of research in the six technicalareas that constitute the Strategic Highway Research Program. This document represents a compilation of the reportsprepared by the seven contract agencies and constitutes in total a workplan for carryinG out a program that will providethe greatest surge in highway research that this nation has ever witnessed.

There is great intrinsic value in the program. It responds to some long-neglected needs for improvements in basictechnologies and materials serving our national street and highway system. It is a new, additional, supplemental programnot intended to supplant any ongoing research activities under state highway agencies, the Federal Highway Administration,the American Association of State Highway and Transportation Officials, the Transportation Research Board, the NationalScience Foundation, or elsewhere. As a new program, with an accelerated, highly focused, results-oriented thrust, it candemonstrate the payoffs from research and serve as an example to encourage other new research investments.

The planning process for the Strategic Highway Research Program will not end with this final report. The report providesa clear definition of the goals and objectives of the program and a sound plan on which to begin the research effort.However, technical, environmental, economic, social and political changes will continue to affect the plan, and it must bereassessed and reevaluated throughout the program. The early results of parts of the research will influence the later stagesof the plan. To be successful, the management of the Strategic Highway Research Program must be a dynamic process,with a clear and steady vision of the program goals but an open, responsive approach to finding a path to those goals.

This research plan was developed under National Cooperative Highway Research Program contracts for the overviewstudy and for five of the technical areas and under a Federal Highway Administration contract for the sixth technical area,Long-Term Pavement Performance, all working in close cooperation with the office of the Strategic Highway ResearchProgram, established by the American Association of State Highway and Transportation Officials.

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STRATEGIC HIGHWAY RESEARCH PROGRAMORGANIZATION

THOMAS D. LARSON

Chairman, SHRP Task Force

L. GARY BYRDInterim Director

RICHARD A. MCCOMB

Special Assistant to Interim Director

JUDITH A. .ROSENTHAL

Administrative Assistant

Strategic Highway Research Program444 North Capitol Street, N.W.

Suite 343Washington, D.C. 20001

2021624-5808

SHRP PRE-IMPLEMENTATIONSTUDY ORGANIZATION

1 1 AOVISOrylJommmee Overview & Integration 1 1

: 1 Ch. Clements I P.L-Bridwell :1 11 1

: 1 I I I 1 I:I 1

: ARE, Inc. FHWA TDRF Manning CTL/ PCA CRREL :1 Research Research Research Research Research Research 1: Contractor Contractor Contractor Contractor :1 Contractor... Pavement -. C~ntractor -. Bridge -. Cement &... Snow & -I 1I Asphalt I Performance I Maintenance I Protection I Concrete I Ice Control I II I I I I I 1 1

: P.L-Finn: P.L-Ch.PMCG: P.L-Butler : P.L-Manning: P.L-Klieger: P.L-Minsk: :1 1 I I I I I II 1 1I I 1I I I1 I II I I

: AdvisOry: Advisory : Advisory ; I

: Committee.J Committee..i Committee.J I I: Ch. Goetz Ch. Blaschke Ch. Orne Ch. Crumpton I Ch. Philleo I I Ch. E I I1 I I 1 I I I I1 I 1 1 1 1 I I~ J L L ! J l ~

P.L-Principal InvestigatorCh.-Chairman

PMCG-Federal Highway Administration Pavement Management Coordinating Group

v

SHRPTask Force

AASHTO

Research ContractorImplementation

P.L-Byrd

I IUniv. of Md.

Task Force Research Contractor. . . -

I I II I II I I1 1 I1 I 1

Advisory1

AdvisoryI

I

AdvisoryI I

:::ommittee Committee .J Committee:dson

.. , ................STRATEGIC HIGHWAYRESEARCH PROGRAMTASK fORCE

Thomas D. Larson, GhairmanSecretary of TranaportationPennsylvania Department of Transportation.....-.-...--.-.--..Ray A. BarnhartFederal Highway AdministratorFederal Highway Administration

Duane BerentsonSecretary of TransportationWashington Department of Transportation

Thomas B. DeenExecuti ve DirectorTransportation Research Board

Francis B. FrancoisExecutive DirectorAASHTO

Mark G. GoodeEngineer-DirectorTexas State Department of Highways

David J. Hensing*Deputy Executive DirectorAASHTO

Boris Hryhorczuk**Deputy MinisterManitoba Department of Highways

Robert N. Hunter(Retired) Chief EngineerMissouri Highway Department

Lester P. LammPresidentHighway Users Federation

Marold W. MonroneyDirector, Division of HighwaysIllinois Department of Transportation

Thomas D. MorelsndCommissionerGeorgia Department of Transportation

David K. Phillips.Associa te Administrator for RD&Tfederal Highway Administration

Robert J.. Reilly.Director. NCHRPTransportation Research Board

Charley V. WootanDirectorTexas Transportation Institute

* Liaison**Ex-Officio Member

..., .... .. .... ........ ... .. ... .......-..

.".. ...................STRATEGIC HIGHWAY RESEARCH PROGRAMADVISORY COMMITTEE

OVERVIEW AND IIITEGRATION STUDY

John A. Clements, ChairmanPresidentNew England Fuel Institute

Lester A. Hoel, Vice ChairmanChsirman, Department of Civil EngineeringUniversity of Virginia,.."""""'-'" .. ......,

Richard E. BarnesPresidentAmericsn Concrete Pipe Asaoc.

Byron BlaschkeAssistant Engineer-Director, OperationsTexas State Department of Highways

Thomas W. Bradshaw, Jr.Vice President, Public FinanceThe First Boston Corporation

Richard P. BraunCommissionerMinnesota Department of Transportation

William A. BulleySenior Vice PresidentH.W. Lochner, Inc.

Roger .CarrierChambers Deval Corporation

James Choromokos, Jr.Director, Research & DevelopmentU.S. Army Corps of Engineers

Carl F. CrumptonEngineer of ResearchKansas Department of Transportation

Howard DugoH (Former) Science Advisorto the Secretary of Transportation

U.S. Department of Transportation

Charles EdsonChief Engineer, Const. & Maint.New Jersey Department of Transportation

M. Baron T. GeorgeVice President, PlanningAVCO Everett Research Laboratory

Robert H. GivenExecutive Vice PresidentIowa Concrete Paving Association

William Goetz, (Retired) ProfessorSchool of Civil EngineeringPurdue University

John Gray, PresidentNational Asphalt Pavement

Associa tion

Calvin G. Grayson, DirectorKentucky Transportation CenterUniversity of Kentucky

B. J. MammDeputy Minister

Nova Scotia Department of Transportation

Daniel J. Hanson, Sr., PresidentAmerican Road and Transportation

Builders Association

Thomas F. HumphreyLecturer & Research AssociateMassachusetts Institute of Technology

K. B. JohnsAssistant DirectorTransportation Research Board

Peter G. KoltnowConsultant

Richard D. MorganExecutive Directorfederal Highway Administration

George lIesterczuk, Science Advisorto the Secretary of Transportation

U.S. Department of Transportation

Howard Newlon, Jr. '. Research DirectorVirginia Highway and Transportation

Research Council

William A. OrdwayConsultant

Donald Orne, Asst. Deputy Director,Highway Technical ServicesMichigan Department of Transportation

Robert G. Packard, ManagerPaving and Transportation DepartmentPortland Cement Association

Vince Paul, ChiefDivision of Engineering ServicesCalifornia Department of Transportation

Robert E. PhilleoConsulting Engineer

Anil K. Rastogi, DirectorCorporate Diversification PortfolioOwens Coming Fiberglas Corporation

William M. SpreitzerGMResearch LaboratoriesGeneral Motors Corporation

Gerald S. TriplettPresidentThe Asphalt Institute

Richard N. Wright, DirectorCenter for Building TechnologyNational Bureau of Standards

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vi

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STRATEGIC HIGHWAYRESEARCHPROGRAMADVISORY COMMITTEEASPHALT STUDY

WilliamH. Goetz, Chairman(Retired) School of Civil EngineeringPurdue University

Don M. Harriott, Vice ChairmanAdministrator, Engineering DivisionMontana Department of Highways

o...o......

David A. AndersonPennsylvania Transportation InstituteThe Pennsylvania State University

Ernest J. Barenberg, ProfessorDepartment of Civil EngineeringUniversity of Illinois

Herbert W. Busching, Professor

Department of Civil EngineeringClemson University

Ronald J. CominskyChief, Materials and Testing DivisionPennsylvania Department of Transportation

Clara D. CraverPresidentChemir Laboratories

Campbell CrawfordDirector of EngineeringNational Asphalt Pavement Association

Joseph E. CroweDeputy Director of HighwaysIllinois Department of Transportation

James V. EvansAmocoOil Company

William G. GundermanEngineer of Materials and ConstructionTransportation Research Board

Douglas 1. Hanson, ChiefMaterials Lab BureauNew Mexico State Highway Department

Richard E. Hay, DirectorEngineering & Highway Operations R&DFederal Highway Administration

Charles L. Huisman (Deceased)Materials EngineerIowa Department of Transportation

P. W. Jennings, ProfessorDepartment of ChemistryMontana State University

William J. KariConsultant

Glenn R. KempCalifornia Department of Transportation

K. C. Kresge, ManagerIndustrial Lubricants,Mobil Research & Development Corporation

Richard LangloisLaboratoire CentralMinistere des Transports du Quebec

Philip E. McIntyreMaterials & Research EngineerNew Hampshire Department of Highways

Robert B. McKeagneyManager, Business DevelopmentVulcan Materials Company

Roderick'll. MonroeBituminous EngineerIowa Department of Transportation

Harold W. MuncyDirector, R&DBituminous Materials Co., Inc.

George E. PaulStreet Maintenance EngineerCity of Albuquerque

R. D. PavlovichSenior Research EngineerNew Mexico Engineering Research Institute

V. P. PuzinauskasPrincipal EngineerThe Asphalt Institute

Tom StaplerState Materials & Research EngineerGeorgia Department of Transportation

Garland W. SteeleEngineering and Special Studies AdvisorWest Virginia Department of Highways

Donald O. SwingMaterials & Tests EngineerNebraska Department of Roads

J. D. TelfordMaterials EngineerOklahoma Department of Transportation

Robert G. Warburton

State Materials EngineerWyoming State Highway Department

Harold H. WeberDirector of Industrial ResearchThe Sulphur Institute

James E. Wilson, Jr.Asst. Materials EngineerOregon Department of Transportation

Gale C. Page

Kenneth A.Gutschick Bituminous Materials EngineerTechnical Director Florida Department of TransportationNational Lime Associationno........ ... ................. ..... ...............................................................................no ....... ......... ......

........STRATEGIC HIGHWAYRESEARCHPROGRAMADVISORY COMMITTEEPAVEMENTPERFORMANCE

Byron Blaschke, ChairmanAssistant Engineer-Director, OperationsTexss State Department of Highways

Brooks Nichols, Vice ChairmanAssistant Chief Engineer, DesignArkansas State Highway Department

.o.. o "....

RichardD. Barksdale, ProfessorSchool of Civil EngineeringGeorgia Institute of Technology

Tom ChristisonSenior Research EngineerAlberta Research Council

Leland FletcherAsst. to Chief Engineer-Missouri Transportation Department

Raymond A. ForsythChief, Transportation LaboratoryCalifornia Department of Transportation

Dave Gendell

Director, Office of Highway Op"rationsFederal Highway Administration

Wade GramlingChief, Roadway Technology DivisionPennsylvania Department of Transportation

Kevin Heanue

Director, Office of Highway PlanningFederal Highway Administration

Ronald'll. HouskaDepu ty DirectorIllinois Department of Transportation

W. Ronald Hudson, ProfessorDepartment of Civil EngineeringUniversity of Texas at Austin

Paul E. IrickConsultant

Mike Jaskaniec

Chief, Construction EngineerWisconsin Department of Transportation

W. H. JorgenrudIowa County Engineer

Robert JoubertThe Asphalt Institute

Roger LeClercConsultant

Richard A. LillAmerican Trucking Associations Inc.

William N. LofroosState Pavement Design EngineerFlorida Department of Transportation

Joel MarcusonTransportation ManagerCity of Tampa

Frank P. Nichols, Jr.National Stone Association

Art PetersMaterials EngineerWashington Department of Transportation

Dale PetersonConsultant

Roger PetzoldFederal Highway Administration

Randell RileyAmerican Concrete Pavement Assoc.

Harry A. SmithNCHRP-Transportation Research Board

Dick SullivanAssistant Division Director

Minnesota Department of Transportation

Shiraz D. TayabjiTransportation Development DepartmentConstruction Technology Lab., PCA

Harry H. Ulery Jr.Waterways Experiment StationCorps of Engineers

Fred Van Kirk

West Virginia State Highway Engineer

George B. WayPavement Management EngineerArizona Department of Transportation

Thomas D. White, ProfessorDepartment of Civil EngineeringPurdue University

Charles A. PagenDirector of R&D

R. G. Hicks, Professor National Asphalt Pavement AssociationDepartment of Civil EngineeringOregon State University .... . .. on . .. .. ..""'o "" ,

vii

Matthew W. Witczak, ProfessorDepartment of Civil EngineeringUniversity of Maryland

.....",...-. ... . .......STRATEGIC HIGHWAY RESEARCH PROGRAMADVISORY COMMITTEEMAINTENANCE STUDY

Donald E. Orne, ChairmanAsst. Deputy DirectorMichigan Department of Transportation

A. D. Andreas,Vice ChairmanDeputySecretaryof TransportationWashin!!tonStateDepartmentof Transportation...."... , . ,

Don AdamsMaintenance EngineerOregon Department of Transportation

CarlosL. AlvarezVice President& DivisionMgr.DeLeuwCather& Company

StanleyS. AtherChief,StreetMaintenanceDivisionD.C.Departmentof PublicWorks

Joseph A. Bruno, Jr.Director of ResearchSteel Structures Painting Council

Adrian G. ClaryEngineer of MaintenanceTransportationResearchBoard

James J. Connor

Bayou Ash, Inc.

Jack CropperChief, Division of Highway MaintenanceCalifornia Department of Transportation

Paul E. CUnningham (Retired)Chief, Construction & Maintenance DivisionFederal Highway Administration

Ken DavisDistrict EngineerNevada Department of Transportation

WilliamGartnar, Jr.Sanior Distric t EnginaarTha AsphaltIns titu ta

Wilbur M. HaasProfessor of Civil Engineering

Michigan Technological University

LouisJ. HaffKing CountyMaintananceEngineer

DavidJ. HalpennyPavingand TransportationDepartmentPortlandCementAssociation

Edwin W. HauserDirector, Institute for TransportationResearch and Education

Paul E. HaisaAssistant DistrictEnginear, District 3-0

Pennsylvania Department of Transportation

ChristineM. JohnsonProjectCoordinatorPortAuthorityof NY & NJ

Jimmy LeeHead of BridgeMaintenanceNorthCarolinaDepartmentof Transportation

David C. MahoneSenior Research Scientist

Virginia Transportation Research Council

Michael J. Markow, Rasearch Associate

Departmentof CivilEngineeringMassachusettsInstituteof Tachnology

George E. MoberlyEngineerof MaintenanceIllinoisDepartmantof Transportation

Bob MyersChief, Construction& MaintenanceDivisionFaderal Highway Administration

Andrew D. NielsenMaintenance SupervisorIdaho Departmentof Transportation

Bernhard H. OrtgiesMaintenance EngineerIowa Department of Transportation

Gerald RayMaintenanceSystemsr.ngineerLouisianaDepartmantof Transportation

Martin C. RisselSanior Associate

Byrd, Tallamy, MacDonaldand Lewis

Eugene L. RowenConsultant

John G. Schoon, ProfessorDepartment of Civil EngineeringNortheastern University

Paul Schwarting

Sac CountyIowaEngineer

KumaresC. Sinha, ProfessorSchool of Civil EngineeringPurdue University

Lyle W.SmithAssistant Deputy MinisterNew BrunswickDepartmentof Transportation

Ralph Speer, Jr.Director of Public WorksCity of Rockford, Illinois

Hugh TynerDistrict Engineer

GeorgiaDepartmentof Transportation

RonaldL. lookEngineerof MaintenanceOhio Departmentof Transportation

..."..... .. ,.....,...."...... , " ........".. ..........................

STRATEGIC HIGHWAYRESEARCHPROGRAMADVISORY COMMITTEEBRIDGE PROTECTION STUDY

Carl F. Crumpton, ChairmanEnginaar of RasaarchKansas Dapartmant of Transportation

Philip D. Cady, Vica ChairmanProfassor of Civil EnginaaringTha PannsylvaniaStata Univarsity

..., . . .. ..

Gordon Beecroft

Research EngineerOregon Department of Transportation

NealS.BerkeResearch Engineer AssociateW. R. Grace & Company

Nicholas A. BittenbinderSeniorStaffConsultantGAl Consultants,Inc.

William Chamberlin

Civil EngineerNew York Department of Transportation

A. M.DigioiaPresidentGAl Consultants,Inc.

L. Edwin Dunn

Structure Const. Field Super.California Department of Transportation

Ed EscalanteCorrosion GroupNational Bureau of Standards

Anthony E. Piorato, DirectorConstruction Technology LaboratoryPortalnd Cement Association

RonI. FrascoiaRasaarch& DevalopmentSupervisorVarmont Agancy of Transportation

William M. GareDiraotor of Operatio'nsSouth DakotaDapartmentof Transportation

C. S. GloydBridge & Structures EngineerWashington State Department of Transportation

GaryL. Hoffman,DirectorBureauof Bridge and Roadway TechnologyPennsylvania Department of Transportation

Theodore H. KarasopoulosEngineerof Materialsand ResearchMaineDepartmentof Transportation

Richard J. Kessler

Structural Concrete EngineerFlorida Department of Transportation

LouisA. KuhlmannResearchLeaderDOWChemicalCompany

Andrew J. Lane

Bridge EngineerNew Hampshire Department of Highways

OrrisJ. Lane, Jr.PortlandCementConcreteEngineerIowaDepartmentof Transportation

Carl E. Locke, Professor

Collegeof EngineeringUniversity of Oklahoma

Wallace T. McKeel Jr.Research ScientistVirginiaTransportationResearchCouncil

Dave Marett

Chief Structural EnginearMunicipality of Ottawa-Carleton

Garrett Morrison

Dragon Products Company

RobertJ. ReillyDirector, Cooperative Research ProgramsTransportationResearchBoard

W. EugeneSampleySkagit Co., Public Works Director

ArunprakashM. ShiroleEngineer - Structures & BridgesCity of Minneapolis - PWD

L. F. SpaineConsultant

RobertT. StaffordDirectorConcreteReinforcingSteel Institute

Yash Paul VirmaniOfficeof ResearchFederal Highway Administration I,

David WhitingSenior Research EngineerConstructionTechnology Lab., PCA

....... ..... ............ ... . .....................viii

." ,..., , ..."..,STRATEGIC HIGHWAYRESEARCHPROGRAMADVISORY COMMITTEECEMENT& CONCRETESTUDY

Robert E. Philleo, ChairmanConsulting Engineer

T. J. Pasko, Vice ChairmanChief, Pavements DivisionFederal Highway /l.dministration", ........., ,..E. J. BreckwoldtSupport Services EngineerLouisiana Department of Transportation

A. D. DonofrioChief, Materials & ResearchDelaware Department of Transportation

Geoffrey J. Frohnsdorff, ChiefBuilding Materials DivisionNational Bureau of Standards

Richard D. GaynorExecutive Vice PresidentNational Ready Mix Concrete /!.ssociation

J. G. GehlerEngr Materials & Physical ResearchIllinois Department of Transportation

GeneR. HardyDallas County, Iowa Engineer

EugeneD. Hill, Jr.OpenakaCorporation, Inc.

Thomas /I.. HolmNortheast Solite Corporation

Frank L. HolmanResearch EngineerMabama Highway Department

Richard H. HoweConcrete and /l.ggregate EngineerPennsylvania Department of Transportation

Crawford E. JencksProjects Engineer, NCHRPTransportation Research Board

Truman R. Jones Jr.Technical Director-Constr. MaterialVulcan Materials Company

Cyrus S. Layson/!.sst. State Highway Engr.Kentucky Department of Transportation

Bryant MatherChief Structures LaboratoryUS /l.rmy Corps of Engineers

P. K. MehtaProfessor of Civil EngineeringUniversity of California, Berkeley

Jim MurphyDirector, Materials BureauNew York Department of Transp<>rtation

William G. Prince/!.sst. Research & Mat'ls EngineerSouth Carolina Department of Highways

Charles F. Scholer, ProfessorSchool of Civil EngineeringPurdue University

Surendra P. ShahProfessor of Civil EngineeringNorthwestern University

Jan P. Skalny/!.ssociate DirectorMartin Marietta Lab<>ratories

Peter SmithDirector, Research & DevelopmentOntario Ministry <>f Transp. & Comm.

Bufford D. StroudState Testing EngineerMississippi State Highway Department

Heber VlamEngineer of Materials and ResearchUtah Department of Transportati<>n

Frank T. WagnerHead of Materials & TestsNorth Carolina Department of Transportation

James WoodstromSupervising Materials & Research Engr.California Department of Transportation

William Yr jansonDirector of EngineeringAmerican Concrete Pavement /!.ssoc.

" ..,...... .." ......."""'" .., ,.. .......

..,.., ..........,........ ... ...,... ...STRATEGIC HIGHWAYRESEARCHPROGRAMADVISORY COMMITTEESNOWAND ICE STUDY

CharlesT. Edson, ChairmanChief Engineer, Const. & Maint.NewJersey Department of Tranhortation

Herbert O. Klossner, Vice ChairmanDirector of Transportation'Hennepin County, Minnesota

, ..., ,.., ...Phillip W. AmosDirector, Bureau of Maint. and OperationsPennsylvania Department of Transportation

T. W. BeaulieuDistrict EngineerMaryland State Highway /l.dministration

Walter B. BienertPresidentDynatherm Corp.

Paul R. Camp ProfessorDepartment of Physics & /l.stronomyUniversity of .Maine

.William E. DickinsonPresidentSalt Institute

Joseph Di Fabio/!.ssociate Civil EngineerNew York State Department of. Transportation

Charles E. DouganDirector of ResearchConnecticut Department of Transportation

Jerome D. FranklinDirector of Public WorksCity of Madison, Wisconsin

J. E. GruspierResearch EngineerOntario Ministry of Transp. & Cot:lm.

Stanley HaasMaintenance EngineerNorth Dakota State Highway Department

Richard C. IngbergPhysical Research EngineerMinnesota Department of Transportation

R. Ian Kingham, ManagerTransportation Planning & ResearchGreenhorne and O'Mara, Inc,

Byron N, LordResearch Environmental EngineerFederal Highway Administration

Kenneth M. MellingerChief, Division of MaintenanceIndiana Department of Highways

Jim NorrisDirector of MaintenanceTennessee Department of Transportation

Kynric M. Pell, ProfessorCollege of EngineeringUniversity of Wyoming

Robert 1. Sandvig, ProfessorDepartment of Chemical EngineeringSouth Dakota Scho\)l of Mines and Technology

Douglas L. ShafferStaff Maintenance Supt.Colorado Department of Highways

Max 1. SheelerChemical i:.ngineerIowa Department of Transportation

Leo C. Stevens Jr.Chief of LaboratoryMassachusetts Department of Public works

Larry R. SweetResearch ManagerAlaska Department of Transportation

Ronald TablerHydrologist & Project LeaderU.S. Forest Service

David C. VeghDirector, Technical & Marketing ServiceZiebart Corporation

Leslie VipondFederal Aviation Administration

, """"" ..., ... ... .no .... ..... ,............. .." .." .................

ix