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Lime-Fly Ash-Stabilized Bases and Subbases 37 NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM SYNTHESIS OF HIGHWAY PRACTICE 37 LIME-FLY ASH-STABILIZED BASES AND SUBBASES TRANSPORTATION RESEARCH BOARD NATIONAL RESEARCH COUNCIL TRANSPORTATION RESEARCH BOARD 1976 Officers HAROLD L. MICHAEL, Chairman ROBERT N. HUNTER, Vice Chairman W. N. CAREY, JR., Executive Director Executive Committee HENRIK E. STAFSETH, Executive Director, American Assn. of State Highway and Transportation Officials (ex officio) NORBERT T. TIEMANN, Federal Highway Administrator, U.S. Department of Transportation (ex officio) ROBERT E. PATRICELLI, Urban Mass Transportation Administrator, U.S. Department of Transportation (ex officio) ASAPH H. HALL, Federal Railroad Administrator, U.S. Department of Transportation (ex officio) HARVEY BROOKS, Chairman, Commission on Sociotechnical Systems, National Research Council (ex officio) MILTON PIKARSKY, Chairman of the Board, Chicago Regional Transportation Authority (ex officio, Past Chairman 1975) WARREN E. ALBERTS, Vice President (Systems Operations Services), United Airlines GEORGE H. ANDREWS, Vice President (Transportation Marketing) Sverdrup and Parcel GRANT BASTIAN, State Highway Engineer, Nevada Department of Highways KURT W. BAUER, Executive Director, Southeastern Wisconsin Regional Planning Commission LANGHORNE BOND, Secretary, Illinois Department of Transportation MANUEL CARBALLO, Secretary of Health and Social Services, State of Wisconsin L. S. CRANE, President, Southern Railway System JAMES M. DAVEY, Consultant B. L. DEBERRY, Engineer-Director, Texas State Department of Highways and Public Transportation LOUIS J. GAMBACCINI, Vice President and General Manager, Port Authority Trans-Hudson Corporation HOWARD L. GAUTHIER, Professor of Geography, Ohio State University FRANK C. HERRINGER, General Manager, San Francisco Bay Area Rapid Transit District ANN R. HULL, Delegate, Maryland General Assembly ROBERT N. HUNTER, Chief Engineer, Missouri State Highway Commission PETER G. KOLTNOW, President, Highway Users Federation for Safety and Mobility A. SCHEFFER LANG, Assistant to the President, Association of American Railroads BENJAMIN LAX, Director, Francis Bitter National Magnet Laboratory, Massachusetts Institute of Technology DANIEL McFADDEN, Professor of Economics, University of California HAROLD L. MICHAEL, School of Civil Engineering, Purdue University THOMAS D. MORELAND, Commissioner, Georgia Department of Transportation J. PHILLIP RICHLEY, Vice President (Engineering and Construction), The Cafaro Company RAYMOND T. SCHULER, Commissioner, New York State Department of Transportation WILLIAM K. SMITH, Vice President (Transportation), General Mills NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM Transportation Research Board Executive Committee Subcommittee on the NCHRP HAROLD L. MICHAEL, Purdue University (Chairman) ROBERT N. HUNTER, Missouri State Highway Commission HENRIK E. STAFSETH, Amer. Assn. of State Hwy. and Transp. Officials NORBERT T. TIEMANN, U.S. Department of Transportation HARVEY BROOKS, National Research Council W. N. CAREY, JR., Transportation Research Board Project Committee SP 20-5 RAY R. BIEGE, JR., Kansas Dept. of Transportation (Chairman) VERDI ADAM, Louisiana Department of Highways Topic Panel on Lime-Fly As/i-Stabilized Bases and Subbases JACK FREIDENRICH, New Jersey Department of Transportation DAVID GEDNEY, Federal Highway Administration H. FABER, National Ash Association EDWARD J. HEINEN, Minnesota Department of Highways A. GUTSCHICK, National Lime Association BRYANT MATHER, USAE Waterways Experiment Station R. L. HANDY, Iowa State University THOMAS H. MAY, Pennsylvania Department of Transportation E. B. McDONALD, South Dakota Department of Transportation THEODORE F. MORF, Consultant R. E. OLSEN, Federal Highway Administration EDWARD A. MUELLER, Jacksonville Transportation Authority W. C. ORMSBY, Federal Highway Administration ORRIN RILEY, Howard, Needles, Tammen & Bergendofi R. SCHWARTZ, Illinois Department of Transportation REX C. LEATHERS, Federal Highway Administration J. W. GUINNEE, Transportation Research Board ROY C. EDGERTON, Transportation Research Board Consultants to Topic Panel Program Staff J. BARENBERG and M. R. THOMPSON, University of Illinois K. W. HENDERSON, JR., Program Director DAVID K. WITHEFORD, Assistant Program Director HARRY A. SMITH, Projects Engineer LOUIS M. MACGREGOR, Administrative Engineer ROBERT E. SPICHER, Projects Engineer JOHN E. BURKE, Projects Engineer HERBERT P. ORLAND, Editor R. IAN KINGHAM, Projects Engineer PATRICIA A. PETERS, Associate Editor ROBERT J. REILLY, Projects Engineer EDYTHE T. CRUMP, Assistant Editor NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM SYNTHESIS OF HIGHWAY PRACTICE 3'7 LIME-FLY ASH-STABILIZED BASES AND SUBBASES RESEARCH SPONSORED BY THE AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS IN COOPERATION WITH THE FEDERAL HIGHWAY ADMINISTRATION AREAS OF INTEREST: PAVEMENT DESIGN CONSTRUCTION AIR TRANSPORT TRANSPORTATION RESEARCH BOARD NATIONAL RESEARCH COUNCIL WASHINGTON, D.C. 1976 NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM NCHRP Synthesis 37 Systematic, well-designed research provides the most ef- Project 20-5 FY '74 (Topic 6-06) fective approach to the solution of many problems facing ISBN 0-309-02510-9 highway administrators and engineers. Often, highway L. C. Catalog Card No. 76-45297 problems are of local interest and can best be studied by highway departments individually or in cooperation with Price: $480 their state universities and others. However, the accelerat- ing 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 Notice of the American Association of State Highway and Trans- The project that is the subject of this report was a part of the portation Officials initiated, in 1962 an objective national National Cooperative Highway Research Program conducted by the Transportation Research Board with the approval of the Governing highway research program employing modern scientific Board of the National Research Council, acting in behalf of the techniques. This program is supported on a continuing National Academy of Sciences. Such approval reflects the Governing basis by funds from participating member states of the Board's judgment that the program concerned is of national impor- tance and appropriate with respect to both the purposes and re- Association and it receives the full cooperation and sup- sources of the National Research Council. port of the Federal Highway Administration, United States The members of the technical committee selected to monitor this Department of Transportation. project and to review this report were chosen for recognized scholarly competence and with due consideration for the balance The Transportation Research Board of the National Re- of disciplines appropriate to the project. The opinions and con- search Council was requested by the Association to admin- clusions expressed or implied are those of the research agency that performed the research, and, while they have been accepted as ister the research program because of the Board's recog- appropriate by the technical committee, they are not necessarily those nized objectivity and understanding of modern research of the Transportation Research Board, the National Research Coun- practices. The Board is uniquely suited for this purpose cil, the National Academy of Sciences, or the program sponsors. Each report is reviewed and processed according to procedures as: it maintains an extensive committee structure from established and monitored by the Report Review Committee of the which authorities on any highway transportation subject National Academy of Sciences. Distribution of the report is ap- proved by the President of the Academy upon satisfactory comple- may be drawn; it possesses avenues of communications and tion of the review process. cooperation with federal, state, and local governmental The National Research Council is the principal operating agency of agencies, universities, and industry; its relationship to its the National Academy of Sciences and the National Academy of Engineering, serving government and other organizations. The parent organization, the National Academy of Sciences, a Transportation Research Board evolved from the 54-year-old High- private, nonprofit institution, is an insurance of objectivity; way Research Board. The TRB incorporates all former HRB activities but also performs additional functions under a broader it maintains a full-time research correlation staff of special- scope involving all modes of transportation and the interactions of ists ,in highway transportation matters to bring the findings transportation with society. 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 trans- portation departments and by committees of AASHTO. Each year, specific areas of research needs to be included in the program are proposed to the Academy and the Board by the American Association of State Highway and Trans- portation Officials. Research projects to fulfill these needs are defined by the Board, and qualified research agencies Published reports of the are selected from those that have submitted proposals. Ad- NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM ministration and surveillance of research contracts are
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