In-field performance of geosynthetics used to reinforce roadway base layers
Subtitle: phase I : instrumentation selection and verification : final report
By: prepared by Steven W. Perkins & Joseph A. Lapeyre
Contributors: Lapeyre, Joseph A.; Montana. Department of Transportation; Montana State University (Bozeman, Mont.). Department of Civil Engineering and Engineering Mechanics
Publisher: Montana State University, Civil Engineering Dept.; [Available through the National Technical Information Service]
Published: 1996
Place of publication: Bozeman, Mont.]; [Springfield Va.]
Language: eng
Number of pages: 160
Subjects: Geotextiles; Geogrids; Roads; Base courses; Base course (Pavements); Geosynthetics; Instrumentation
Description: Research has been initiated by the Montana Department of Transportation to understand if and how geosynthetics can be used to reinforce roadway base course layers. This research, as currently planned, may involve the construction and monitoring of geosynthetically reinforced full-scale field test sections subject to real traffic loading. Stress, strain, moisture content and temperature sensors would be used to monitor performance of the test sections. The research is being conducted in phases. Initially, a literature review was conducted to establish a need for further research. With this need identified, the first phase of the research was initiated. This final report discusses the work performed under Phase I of the project. The objective of the Phase I research was to examine instrumentation proposed for use in the field test sections to be constructed under a subsequent phase of the project. This objective was accomplished by constructing a pilot test section with certain instruments placed on the geosynthetics and within the base course and asphalt concrete layers. These instruments were monitored for a 4 month period. Laboratory wide-width tension tests were performed on the geosynthetics used in the pilot test section for the purpose of comparing the measured strain from the instrument to the global strain experienced by the material. From this work, conclusions are made regarding the appropriateness of certain instruments and installation techniques for use in field test sections.
Notes: Cover title.

"September 30, 1996."

Final report. May 1995-Sept. 1996.

Prepared for the Montana Dept. of Transportation, Research, Development and Technology Transfer Program in cooperation with the Federal Highway Administration under contract no. 8126.
Table of contents: title: Introduction; title: Instrumentation used in study; title: In-air geosynthetic tension testing; title: Phase I pilot test section construction and monitoring; title: Findings and conclusions; title: Implementation plan; title: Appendix A: Photographs; title: Appendix B: In-air tension test figures; title: Appendix C: Test section data.