Application Guide and Specifications for Geotextiles in ...

1 Technical Report Documentation Page 1. Report No. FHWA/TX-10/0-5812-1 2. Government Accession No. 3. Recipient s Catalog No. 4. Title and Subtitle Application Guide and Specifications for Geotextiles in Roadway Applications 5. Report Date February 2010, Revised February 2012 6. Performing Organization Code 7. Author(s) Jorge G. Zornberg, Nathan Thompson 8. Performing Organization Report No. 0-5812-1 9. Performing Organization Name and Address Center for transportation Research The University of Texas at Austin 1616 Guadalupe, Suite Austin, TX 78701 10. Work Unit No.

2 (TRAIS) 11. Contract or Grant No. 0-5812 12. Sponsoring Agency Name and Address Texas department of transportation Research and Technology Implementation office Box 5080 Austin, TX 78763-5080 13. Type of Report and Period Covered Technical Report Sept 2007 August 2009 14. Sponsoring Agency Code 15. Supplementary Notes Project performed in cooperation with the Texas department of transportation and the Federal Highway Administration. 16. Abstract Geotextiles , one among the different geosynthetic products, can be used for a number of functions or applications in pavement design.

3 The benefits of using Geotextiles in pavements and other transportation applications have triggered a proliferation of products. While this abundance of new products has led to reduction in costs, it has also made it difficult for TxDOT personnel to choose appropriate products based on their engineering properties. Consequently, this report provides the basis for (i) guidelines for proper use and selection of Geotextiles in pavements, (ii) material Specifications for Geotextiles in pavement applications, and (iii) draft construction Specifications . 17. Key Words geosynthetics, Geotextiles , woven, nonwovens, filtration, separation, stabilization, reinforcement.

4 18. Distribution Statement No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161; 19. Security Classif. (of report) Unclassified 20. Security Classif. (of this page) Unclassified 21. No. of pages 128 22. Price Form DOT F (8-72) Reproduction of completed page authorized Application Guide and Specifications for Geotextiles in Roadway Applications Jorge G. Zornberg Nathan Thompson CTR Technical Report: 0-5812-1 Report Date: February 2010, Revised February 2012 Project: 0-5812 Project Title: Development of Application Guide and Specifications for Geotextiles in Soil and Base Sponsoring Agency: Texas department of transportation Performing Agency.

5 Center for transportation Research at The University of Texas at Austin Project performed in cooperation with the Texas department of transportation and the Federal Highway Administration. iv Center for transportation Research The University of Texas at Austin 1616 Guadalupe, Suite Austin, TX 78701 Copyright (c) 2010 Center for transportation Research The University of Texas at Austin All rights reserved Printed in the United States of America v Disclaimers Author's Disclaimer: The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the data presented herein.

6 The contents do not necessarily reflect the official view or policies of the Federal Highway Administration or the Texas department of transportation (TxDOT). This report does not constitute a standard, specification, or regulation. Patent Disclaimer: There was no invention or discovery conceived or first actually reduced to practice in the course of or under this contract, including any art, method, process, machine manufacture, design or composition of matter, or any new useful improvement thereof, or any variety of plant, which is or may be patentable under the patent laws of the United States of America or any foreign country.

7 Engineering Disclaimer NOT INTENDED FOR CONSTRUCTION, BIDDING, OR PERMIT PURPOSES. Project Engineer: Jorge G. Zornberg Professional Engineer License State and Number: California No. C 056325 P. E. Designation: Research Supervisor vi Acknowledgments The authors express appreciation to Mark McDaniel from the Texas department of transportation for valuable input and guidance throughout this project. Products Appendix A contains Product 0-5812-P1, Guide for the Application and Selection of Geotextiles . vii Table of Contents Chapter 1. 1 Background.

8 1 Research Objectives .. 1 Design Approach .. 2 Report Outline .. 2 Chapter 2. Literature Review .. 5 Geotextile Overview .. 5 Manufacturing Process .. 5 Geotextile Functions .. 6 Important Properties and Test Methods .. 9 National Level Documents .. 11 Identification and Provenance of Relevant Documents .. 12 Design and Selection Guidelines .. 12 Material Specifications .. 17 State Level Documents .. 18 Introduction .. 18 State DOT Geotextile Materials Specifications .. 21 Construction Specifications from State DOTs for Projects Involving Geotextiles .

9 36 Summary .. 42 Chapter 3. Survey of TxDOT and Other State DOTs Regarding the Use of Geotextiles in Pavement Systems .. 45 Introduction .. 45 National Level Survey .. 45 Survey 45 Analysis of National 47 TxDOT Survey .. 51 TxDOT Survey Form .. 51 Analysis of TxDOT Responses .. 53 Summary .. 56 Chapter 4. Application Overview .. 57 Subsurface Drainage .. 57 Pavement Structural Section .. 58 Construction Access .. 60 Summary .. 61 viii Chapter 5. Departmental Material Specification (DMS) for Geotextiles in Roadway Applications .. 63 Document Overview.

10 63 Material Requirements .. 65 Material Producer List .. 66 DMS Usage Notes .. 66 Chapter 6. Installation 67 Chapter 7. Selection Guidelines .. 69 Introduction .. 69 Definition of Terms .. 70 Identification of Appropriate Application .. 72 Geotextile Selection: Decision Criteria and Justification for Recommendations .. 73 Survivability .. 73 Application -based Properties .. 74 Material Specification .. 75 Installation Guidelines .. 76 References .. 77 Appendix A: Guide for the Application and Selection of Geotextiles .. 79 Appendix B: Departmental Material Specification.