DOCSLIB.ORG

Concrete Pavement Field Reference Pre-Paving

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Concrete Pavement Field Reference Pre-Paving Concrete Pavement Field Reference Pre-Paving Joint layout Subgrades Subbases A practical guide to understanding and troubleshooting: Pre-paving setup Concrete mixture analysis & approval American Concrete Pavement Association Concrete Pavement Field Reference Pre-Paving This publication includes, at the outset, a series of checklists aimed at guiding and assisting with proper procedures. These checklists precede the main content of the field reference to provide a preview of what appears in each section and also to provide some quick references to the entire publication. You can also find these checklists in a printer-friendly layout at: www.pavement.com/fieldreference These are available free of charge for distribution to your paving crews or others who may benefit from these quick and easy-to-use checklists. Again, the checklists are intended to help you with proper procedures. This field reference also includes several cross-references intended to help you find information quickly. General topics are organized by chapters and may be found either by chapter number or in the table of contents. Also, key words are included in an index at the end of this field reference. Of course, if you are looking for information, but still cannot find it, please call on any ACPA technical staff member. American Concrete Pavement Association 5420 Old Orchard Rd., Suite A100 Skokie, IL 60077-1059 (847) 966-ACPA www.pavement.com © 2008 American Concrete Pavement Association All rights reserved. No part of this book may be reproduced in any form without permission in writing from the publisher, except by a reviewer who wishes to quote brief passages in a review written for inclusion in a maga- zine or newspaper. EB237P ii Table of Contents Introduction . 1 Proper Procedures Checklists . 3 Joint Layout . 3 Subgrade . 8 Subbase. 10 Pre-Paving Setup. 12 Concrete Mixture Analysis and Approval . 16 Joint Layout . 19 1.1 Joint Types. 20 1.2 Special Considerations for Intersections . 23 1.3 Rules for Joint Layout . 24 1.4 The 10-Step Method for Intersections . 25 1.5 Alternate Skewed Intersection Layout . 31 1.6 Handling Wide Medians and Dual-Left Turn Lanes . 33 1.7 Roundabouts . 34 1.8 Cul-de-sacs . 38 1.9 Adjusting Joints for Utilities and Boxing out Fixtures. 39 Subgrade . 41 2.1 Problematic Soils . 42 2.1.1 Expansive Soils . 42 2.1.2 Frost Susceptible Soils . 42 iii Concrete Pavement Field Reference Pre-Paving 2.2 Uniformity and Stability . 43 2.3 Construction. 45 Subbase . 49 3.1 Subbase Design . 49 3.1.1 Unstabilized (Granular) Subbases . 50 3.1.2 Stabilized (Treated) Subbases . 51 3.1.3 Permeable (Drainable) Subbases . 52 3.1.4 Using Recycled Concrete in Subbases . 53 3.2 Subbase Construction . 53 Pre-Paving Setup . 59 4.1 Setting and Maintaining the Stringline . 59 4.1.1 Stringline Considerations . 61 4.1.2 Setting Reference Hubs . 63 4.1.3 Setting the Stringline . 65 4.1.4 Maintaining the Stringline . 69 4.2 Setting Forms . 71 4.3 Placing Dowels . 73 4.4 Placing Reinforcement. 76 4.4.1 Tiebars . 76 4.4.2 Continuous Reinforcement . 77 4.4.3 Other Reinforcement. 77 4.5 Paving Equipment Setup . 77 4.5.1 Slipform Mold (Pan) Setup . 78 4.5.2 Vibrator Setup. 80 4.5.3 Slipform Paver Setup . 81 4.5.4 Checking the Final Grade and Cross Slope . 82 Concrete Mixture Analysis and Approval . 85 5.1 Cement . 87 iv Table of Contents 5.2 Cementitious Materials Content. 88 5.3 Water-Cementitious Materials Ratio . 89 5.4 Aggregates . 89 5.4.1 Gradation . 90 5.4.2 Percent Retained . 91 5.4.3 Percent Passing . 92 5.4.4 Workability and Coarseness . 93 5.4.5 The 0.45 Power Chart. 94 5.4.6 Fineness Modulus. 95 5.5 Testing . 96 5.5.1 Temperature . 96 5.5.2 Slump . 97 5.5.3 Density (Unit Weight) . 98 5.5.4 Air Content . 99 5.5.5 Compressive/Flexural Strength. 101 5.5.6 Maturity Method for Estimating Strength . 102 References . 107 Index . 113 v Concrete Pavement Field Reference Pre-Paving vi Introduction Concrete is one of the most abundant and versatile construction materials in the world. It is also somewhat forgiving, which means that handling, placing, and curing conditions do not have to be absolutely perfect for the final product to perform well over time. Still, placing a quality concrete pavement requires planning before paving to address not only material and constructability factors, but also to address the sub - grade or subbase placed below the concrete pavement. After all, if a pavement is built upon a poorly controlled support system, even the most well constructed pave- ment likely will fail prematurely. Of course, the human factor also is a key variable as it is integral to every step of the pre-paving, construction, and repair of a concrete pavement. The human factor certainly cannot be underestimated, particularly given the number of people, as well as their knowledge, training, skill levels, experience, and other considerations, that guide what is done and how it is done on a given project. Given this level of dependence on human ability, it is imperative that all parties involved in the planning and construction of a concrete pavement be cognizant of all other parties and the effects their decisions might have on each other. This reference is not intended to be the final word in pre-paving considerations. Rather, it is a common-sense guide to pre-paving considerations that will aid in constructing a quality concrete pavement. It represents some current best-prac- tices, as well as a good-faith representation of methods, materials, machines, and instruments currently available for joint layout; subgrade/subbase design and preparation; stringline, forms, and embedded steel arrangement and placement; and concrete mixture analysis and approval. This is a document which serves to educate, guide, and inform all parties involved in any pre-construction considerations for concrete paving, from contractors to consultants to agencies/owners. Although nothing can replace experience, skill, and sound judgment, it is our hope that this guide will augment those “human factors.” 1 Concrete Pavement Field Reference Pre-Paving Last, but not least, it is likely that as this guide is printed and distributed, some new or even currently existing pre-paving products or processes may be brought to market (or simply brought to our attention). In advance, we humbly offer that, although we have attempted to capture the breadth and depth of best practices, such disclosures are a normal and healthy part of process improvement and ad - vancement of technology. 2 Proper Procedures Checklists NOTE: All proper procedure checklists contained herein can be downloaded for free at: www.pavement.com/fieldreference. ■ Joint Layout Joint Types (Section 1.1) No. Task Complete 1. Ensure that all parties involved in joint design and construction ■ understand each joint type. 2. Check that the location of special joint types (i.e., isolation, ■ tied contraction, etc.) are clearly indicated on project plans. Special Considerations for Intersections (Section 1.2) No. Task Complete 1. Check.
Load more

Recommended publications
  • ROAD INSPECTION MANUAL a Risk-Based Approach to Managing Road Defects
    ROADS AND TRANSPORT DIRECTORATE ROAD INSPECTION MANUAL A risk-based approach to managing road defects NSW & ACT Institute of Public Works Engineering (NSW Division) Limited Roads & Transport Directorate MANAGE ROAD DEFECTS MANUAL First Published 2021 © IPWEA NSW and ACT 2021 This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without the prior written permission of IPWEA NSW and ACT. National Library of Australia Cataloguing in-Publication data: ISBN 978-0-6451183-0-8 Project Manager: Arjan Rensen, Manager Roads and Transport Directorate Manual prepared by WSP: Greg Evans Paul Robinson Matt Taylor Laurence Origlia Reference group: Geoff Paton, Blayney Shire Council Aaron Dunne, Eurobodalla Shire Council Masoud Mohammadi, City of Canterbury Bankstown Chris Worrell, Mid-Western Regional Council Clint Fitzsummons, Nambucca Shire Council Published by: Institute of Public Works Engineering (NSW Division) Limited Level 12, 447 Kent Street Sydney NSW 2000 Phone: +61 2 8267 3000 Fax: +61 2 8267 3070 Email: [email protected] https://www.roadsdirectorate.org.au/ IPWEA NSW and ACT believes this publication to be correct at the time of printing and does not accept responsibility for any consequences arising from the use of information herein. Table of Contents 1 Introduction 1 1.1 General 2 1.2 Background 2 1.3 Coverage 2 1.4 Scope 3 1.5 Objectives of the manual 3 1.6 Roads and Transport Directorate 4 1.7 AUS-SPEC 4 1.8 Statewide Mutual 5 2 IPWEA Functional Road Classification
    [Show full text]
  • Pavement Management Program
    STANDARD OPERATING GUIDELINES OPERATING STANDARD PAVEMENT MANAGEMENT PROGRAM May 2013 Page 1 of 93 I. Contents INTRODUCTION .................................................................................................................................................... 2 PAVEMENT PRESERVATION ................................................................................................................................. 5 SYSTEM METRICS ................................................................................................................................................. 7 TREATMENT LIFE EXTENSION ............................................................................................................................... 9 NETWORK HEALTH ............................................................................................................................................... 9 OPTIMIZATION ................................................................................................................................................... 10 PROJECT IDENTIFICATION AND SELECTION ........................................................................................................ 13 CRACK SEALING TREATMENT ............................................................................................................................. 28 FOG SEAL ............................................................................................................................................................ 30 LONGITUDINAL JOINT STABILIZATION
    [Show full text]
  • Review of Remote Sensing Methodologies for Pavement Management and Assessment
    Eur. Transp. Res. Rev. (2015) 7: 7 DOI 10.1007/s12544-015-0156-6 ORIGINAL PAPER Review of remote sensing methodologies for pavement management and assessment E. Schnebele · B. F. Tanyu · G. Cervone · N. Waters Received: 10 October 2013 / Accepted: 9 February 2015 / Published online: 7 March 2015 © The Author(s) 2015. This article is published with open access at SpringerLink.com Abstract challenges associated with transportation assessment in the Introduction Evaluating the condition of transportation aftermath of major disasters. infrastructure is an expensive, labor intensive, and time Conclusion The use of remote sensing techniques offers consuming process. Many traditional road evaluation meth- new potential for pavement managers to assess large areas, ods utilize measurements taken in situ along with visual often in little time. Although remote sensing techniques can examinations and interpretations. The measurement of dam- never entirely replace traditional geotechnical methods, they age and deterioration is often qualitative and limited to do provide an opportunity to reduce the number or size of point observations. Remote sensing techniques offer non- areas requiring site visits or manual methods. destructive methods for road condition assessment with large spatial coverage. These tools provide an opportunity Keywords Road assessment · Remote sensing · Civil for frequent, comprehensive, and quantitative surveys of engineering transportation infrastructure. Methods The goal of this paper is to provide a bridge between traditional procedures for road evaluation and 1 Introduction remote sensing methodologies by creating a comprehensive reference for geotechnical engineers and remote sensing The importance of incorporating remote sensing into experts alike. geotechnical and geological engineering practices has long Results A comprehensive literature review and survey of been recognized by the United States (US) National current techniques and research methods is provided to Research Council [95].
    [Show full text]
  • Sharing the Spirit of Innovation
    00_TRN_284_TRN_284 3/7/13 2:59 PM Page C1 JANUARY–FEBRUARY 2013 NUMBER 284 TR NEWS Sharing the Spirit of Innovation Examples from the States Plus: Solving Highway Congestion Lessons for Climate Change Mapping Natural Hazmats 00_TRN_284_TRN_284 3/7/13 2:59 PM Page C2 TRANSPORTATION RESEARCH BOARD 2013 EXECUTIVE COMMITTEE* Chair: Deborah H. Butler, Executive Vice President, Planning, and CIO, Norfolk Southern Corporation, Norfolk, Virginia National Academy of Sciences Vice Chair: Kirk T. Steudle, Director, Michigan Department of Transportation, Lansing National Academy of Engineering Executive Director: Robert E. Skinner, Jr., Transportation Research Board Institute of Medicine National Research Council Victoria A. Arroyo, Executive Director, Georgetown Climate Center, and Visiting Professor, Georgetown University Law Center, Washington, D.C. The Transportation Research Board is one Scott E. Bennett, Director, Arkansas State Highway and Transportation Department, Little Rock of six major divisions of the National William A. V. Clark, Professor of Geography (emeritus) and Professor of Statistics (emeritus), Department of Geography, University of California, Los Angeles Research Council, which serves as an James M. Crites, Executive Vice President of Operations, Dallas–Fort Worth International Airport, Texas independent adviser to the federal gov- John S. Halikowski, Director, Arizona Department of Transportation, Phoenix ernment and others on scientific and Paula J. C. Hammond, Secretary, Washington State Department of Transportation, Olympia technical questions of national impor- Michael W. Hancock, Secretary, Kentucky Transportation Cabinet, Frankfort tance, and which is jointly administered Susan Hanson, Distinguished University Professor Emerita, School of Geography, Clark University, Worcester, by the National Academy of Sciences, the Massachusetts National Academy of Engineering, and Steve Heminger, Executive Director, Metropolitan Transportation Commission, Oakland, California the Institute of Medicine.
    [Show full text]
  • Analysis and Recommendations for Street Network
    Analysis and Recommendations for Street Network Bountiful City September 2017 Copyright © 2017 By the Utah LTAP Center. All rights reserved. Printed in the United States of America. No part of this document may be used or reproduced in any manner whatsoever without written permission except in the case of brief quotations embodied in critical articles and reviews. For information, address Utah LTAP Center; Department of Civil and Environmental Engineering; 4111 Old Main Hill; Logan, Ut 84322-4111. Utah LTAP Center 09/21/17 Table of Contents Page Sections INTRODUCTION 1 INVENTORY OF ROAD NETWORK 3 PAVEMENT TYPE DISTRIBUTION OF THE ROAD NETWORK 6 PAVEMENT CONDITION SURVEY 7 ASPHALT ROAD NETWORK 7 CONCRETE ROAD NETWORK 7 ASPHALT PAVEMENT DESIGN & PERFORMANCE 8 MAJOR CAUSES OF ASPHALT PAVEMENT DISTRESS 10 PAVEMENT DISTRESS SURVEY & ANALYSIS 12 CONCRETE ROAD NETWORK 26 DEVELOPMENT OF PRESERVATION STRATEGIES AND RECOMMENDED TREATMENTS 29 ASSESSMENT OF CURRENT STREET MAINTENANCE PROGRAM FUNDING 33 ASPHALT ROAD NETWORK 33 DEVELOPMENT OF RECOMMENDED PAVEMENT PRESERVATION PROGRAM 37 ASPHALT ROAD NETWORK 37 IMPLEMENTATION OF PAVEMENT MANAGEMENT SYSTEM 40 IMPORTANCE OF FEEDBACK 41 SUMMARY OF FINDINGS AND RECOMMENDATIONS 42 FINDINGS 42 COMPARISON OF SURVEYS 42 RECOMMENDATIONS 43 - i - Utah LTAP Center 09/21/17 Figures Figure 1. Pavement Management Process Diagram _______________________________________ 2 Figure 2. Distribution of Street Network by Functional Classification _______________________ 5 Figure 3. Percentages of Asphalt and Concrete Streets by Surface Area ______________________ 6 Figure 4. Pavement Performance Curve ________________________________________________ 8 Figure 5. Condition Rating Sheet _____________________________________________________ 13 Figure 6. Governing Distress Rating Distribution for Asphalt Roads _______________________ 16 Figure 7. Governing Distress Rating Distribution for Concrete Roads ______________________ 17 Figure 8.
    [Show full text]
  • Connecticut Begins to Use the Notched Wedge Joint
    Summer 2009 ................................. ................................. ................................. In this Issue Connecticut Begins to Use Connecticut Begins to Use the 1 the Notched Wedge Joint Notched Wedge Joint Work Zone Safety Training 2 for Law Enforcement Longitudinal joints in asphalt pavements are formed between individual From the T2 Center 2 passes of the paver. Ideally, this longitudinal joint is as durable as the rest of Resource Library the asphalt pavement mat and will have a life span comparable to the rest of the pavement. The most common longitudinal joint failure occurs from a crack forming in the longitudinal joint, this is FHWA Urges Road Agencies 4 sometimes referred to as the longitudinal joint to Consider “Top Nine” “opening up”. All longitudinal joints will Life-Saving Strategies eventually crack, but the severity and width of the cracking dictates whether or not stan- 2008 HMA Paving Awards 6 dard pavement maintenance activities such as crack sealing can be effective in preventing further pavement degradation. In some cases, Technology Transfer Center 2009 6 the crack in the longitudinal joint will become Fall Calendar so large that it becomes a safety hazard, as bicycle and motorcycle wheels can fit into and become wedged in the crack. Even if the crack does not become 2009 Technology Transfer Expo 7 large enough to present a safety hazard, the crack will allow water to infiltrate into the pavement structure and ultimately damage it. Technology Transfer Center One of the major causes of asphalt pavement cracking, along with longi- tudinal failure, is the thermal cycling that all pavements experience virtually Request Form 8 everyday.
    [Show full text]
  • Transverse Cracking of Asphalt Pavements
    -. '• Summary Report of Office of Research Transverse Cracking of a Cooperative Analysis and Development by Teams from Washington, D.C. Iowa, Kansas, Nebraska Asphalt Pavements North Dakota and Report No. Oklahoma FHWA-Ts-82-205 Final Report July 1982 itf2_- I OL/-0 US. Department at Transportation Federal Highway Admlnlshallon .. .. ..- FOREWORD This Tech Share summaries the analysis of tranverse cracking in asphalt pavements by a study team from the five States of Iowa, Kansas, Nebraska, North Dakota, and Oklahoma. The report should be of interest to pavement designers and maintenance engineers concerned with the performance of asphalt pavements. Distribution is being made ~ccording to the latest distribution plan. A limited number of additional copies can be obtained while supplies last from the Implementation Division, Construction Materials, and Methods Group HDV-22. ~~~ Director Office of Development \ . NOTIC:P. This document is disseminated under the sponsorship of the Department of Transportation in the interest of information exchange. The United States Government assumes no liability for its contents or use thereof. The contents of this report reflect the views of the contractor, who is responsible for the accuracy of the data presented herein. The contents do not necessarily reflect the official policy of the Department of Transportation. This report does not constitute a standard, specification, or regulation. -~ .. ',..·_ :.. .. · .. \" ..... TRANSVERSE CRACKING OF ASPHALT PAVEMENTS by Iowa Department of Transportation Robert A. Shelquist Edward J. O'Connor Donald D. Jordison Vernon J. Marks Kansas Department of Transportation Rodney G. Maag Harvey E. Wallace Montie W. Baty Nebraska Department of Roads Janis Silenieks Robert J. Wedner Rollie H.
    [Show full text]
  • Asphalt in Pavement Preservation and Maintenance)
    1. Report No. 2. Government Accession No. 3. Recipient's Catalog No. FHWA/TX-11/0-6589-1 4. Title and Subtitle 5. Report Date PAVEMENT REPAIR STRATEGIES FOR SELECTED Published: June 2012 DISTRESSES IN FM ROADWAYS 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. Samer Dessouky, Jeong Ho Oh, Mijia Yang, Mohammad Ilias, Report 0-6589-1 Sang Ick Lee, Tom Freeman, Mark Bourland, and Mien Jao 9. Performing Organization Name and Address 10. Work Unit No. (TRAIS) The University of Texas at San Antonio 1 UTSA Circle 11. Contract or Grant No. San Antonio, TX 78249 Project 0-6589 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered Texas Department of Transportation Technical Report: Research and Technology Implementation Office September 2009–August 2010 P. O. Box 5080 14. Sponsoring Agency Code Austin, Texas 78763-5080 15. Supplementary Notes Project performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration. Project Title: Pavement Repair Strategies for 2R and Routine Maintenance (RMC) Projects URL: http://tti.tamu.edu/documents/0-6589-1.pdf 16. Abstract Expansive soil is considered one of the most common causes of pavement distresses in FM roadways. Depending upon the moisture level, expansive soils will experience changes in volume due to moisture fluctuations from seasonal variations. The objective of this research was to evaluate existing repair projects on selected FM roadways. Those roadways experienced failures in the form of fatigue and rutting in the wheel path, and longitudinal (faulted) cracking including edge cracking. The causes of those failures were mainly linked to high PI expansive soil and narrow pavement.
    [Show full text]
  • Pavement Distress Detection Methods: a Review
    infrastructures Review Pavement Distress Detection Methods: A Review Antonella Ragnoli 1,* , Maria Rosaria De Blasiis 2 and Alessandro Di Benedetto 2 1 Department of Civil, Constructional and Environmental Engineering, Sapienza University of Rome, 00184 Rome, Italy 2 Department of Engineering, Roma Tre University, 00154 Rome, Italy; [email protected] (M.R.D.B.); [email protected] (A.D.B.) * Correspondence: [email protected]; Tel.: +39-0644-585-115 Received: 28 September 2018; Accepted: 17 December 2018; Published: 19 December 2018 Abstract: The road pavement conditions affect safety and comfort, traffic and travel times, vehicles operating cost, and emission levels. In order to optimize the road pavement management and guarantee satisfactory mobility conditions for all road users, the Pavement Management System (PMS) is an effective tool for the road manager. An effective PMS requires the availability of pavement distress data, the possibility of data maintenance and updating, in order to evaluate the best maintenance program. In the last decade, many researches have been focused on pavement distress detection, using a huge variety of technological solutions for both data collection and information extraction and qualification. This paper presents a literature review of data collection systems and processing approach aimed at the pavement condition evaluation. Both commercial solutions and research approaches have been included. The main goal is to draw a framework of the actual existing solutions, considering them from a different point of view in order to identify the most suitable for further research and technical improvement, while also considering the automated and semi-automated emerging technologies. An important attempt is to evaluate the aptness of the data collection and extraction to the type of distress, considering the distress detection, classification, and quantification phases of the procedure.
    [Show full text]
  • Relationships. Responsiveness. Results
    Relationships. 2020 Pavement Condition Study Responsiveness. Final Report Results. Buxton, Maine PREPARED FOR: Town of Buxton 185 Portland Road Buxton, Maine 04093 December 2020 SUBMITTED BY: Gorrill Palmer 707 Sable Oaks Drive Suite 30 So. Portland, ME 04106 207.772.2515 Town of Buxton, Maine Pavement Condition Study Table of Contents Description Page Introduction 1 Data Collection 2 Data Analysis 10 Treatment Alternatives 13 10-Year Roadway Improvement Plans 15 Use of Report 17 Conclusions 18 Appendix A Table 1 Paved Network Inventory – Municipal Road/Section (Alphabetical) Table 2 Paved Network Inventory – Municipal Road/Section (Treatment) Table 3 Costed Repair Options – Municipal Road/Section (Alphabetical) Appendix B 10-Year Roadway Improvement Plan – Option 1: $420,000 Annual Budget 10-Year Roadway Improvement Plan – Option 2: $3M Bond/$420,000 Annual Budget 10-Year Roadway Improvement Plan – Option 3: $6M Bond/$420,000 Annual Budget Appendix C Road Repair Unit Prices Appendix D Field Data Collection Sheet Appendix E Roadway Treatmentp Ma Appendix F Buxton Road Maintenance History Introduction Gorrill Palmer was retained by the Town of Buxton to complete pavement roadway condition assessments for all municipal roadways. The purpose of the study was to assess the pavement condition of the municipal roads and to develop a ten-year plan for improving the pavement conditions. By continuing to complete these pavement evaluations on a regular basis, it is possible for the Town to better gauge how quickly the pavement is deteriorating and, consequently, how best to allocate resources. The following graphic illustrates the ideal timing to complete preventive maintenance before the pavement condition reaches a point where pavement rehabilitation is required.
    [Show full text]
  • Minimizing Reflection Cracking of Pavement Overlays
    92 NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM SYNTHESIS OF HIGHWAY PRACTICE 92 MINIMIZING REFLECTION CRACKING OF PAVEMENT OVERLAYS 91 TRANSPORTATION RESEARCH BOARD NATIONAL RESEARCH COUNCIL TRANSPORTATION RESEARCH BOARD EXECUTIVE COMMITTEE 1982 Officers Chairman DARRELL V MANNING, Director Idaho Transportation Department Vice Chairman LAWRENCE D. DAHMS, Executive Director, Metropolitan Transportation Commission, San Francisco Bay Area Secretary THOMAS B. DEEN, Executive Director, Transportation Research Board Members RAY A. BARNI-JART, Federal Highway Administrator, U.S. Department of Transportation (cx officio) FRANCIS B. FRANCOIS, Executive Director, American Association of State Highway and Transportation Officials (cx officio) WILLIAM J. HARRIS, JR., Vice President for Research and Test Department, Association of American Railroads (cx officio) J. LYNN HELMS, Federal Aviation Administrator, U.S. Department of Transportation (cx officio) THOMAS D. LARSON, Secretary. Pennsylvania Department of Transportation (cx officio, Past Chairman 1981) RAYMOND A. PECK, JR., National Highway Traffic Safety Administrator, U.S. Department of Transportation (cx officio) ARTHUR E. TEELE, JR., Urban Mass Transportation Administrator, U.S. Department of Transportation (cx officio) CHARLEY V. WOOTAN, Director, Texas Transportation institute. Texas A&M University (cx officio, Past Chairman 1980) GEORGE J. BEAN, Director of Aviation, Hillsborough County (Florida) Aviation Authority JOHN R. BORCHERT, Professor, Department of Geography. University of Minnesota RICHARD P. BRAUN, Commissioner, Minnesota Department of Transportation ARTHUR J. BRUEN, JR., Vice President, Continental Illinois National Bank and Trust Company of Chicago JOSEPH M. CLAPP, Senior Vice President, Roadway Express, Inc. ALAN G. DUSTIN, President and Chief Executive Officer, Boston and Maine Corporation ROBERT E. FARRIS, Commissioner, Tennessee Department of Transportation ADRIANA GIANTURCO. Director, California Department of Transportation JACK R.
    [Show full text]
  • Impact of Environmental Factors on Pavement Performance in the Absence of Heavy Loads
    Impact of Environmental Factors on Pavement Performance in the Absence of Heavy Loads PUBLICATION NO. FHWA-HRT-16-084 MARCH 2019 Research, Development, and Technology Turner-Fairbank Highway Research Center 6300 Georgetown Pike McLean, VA 22101-2296 FOREWORD This report documents the analysis of data collected through the Long-Term Pavement Performance program to characterize the impact of environmental factors on pavement performance. The objectives of this analysis were to identify and quantify the effects of environmental factors and pavement design on pavement performance in the absence of heavy loads; develop recommendations for mitigating these effects through effective design, materials selection, and construction; estimate the portion of pavement damage caused by environmental factors; and establish a database of pavement design features, materials properties, and performance to be used in the future for similar analyses. The study showed that, for flexible pavements that have been in service for 15 yr with normal traffic loading, 36 percent of total damage is related to environmental factors (e.g., subgrade and climate variables). For rigid pavements that have been in service for 15 yr with normal traffic loading, 24 percent of total damage is related to environmental factors. Results related to the impact of specific subgrade, climate, traffic, and design factors on pavement performance will be of interest to pavement, materials, and pavement-management engineers concerned with the design, materials properties, and performance of flexible and rigid pavements. Cheryl Allen Richter, Ph.D., P.E. Director, Office of Infrastructure Research and Development Notice This document is disseminated under the sponsorship of the U.S.
    [Show full text]