Geosynthetic-stabilized Roadways for Base Course Reduction

Details

• Creators:
  Zornberg, Jorge G. ; Sankaranarayanan, Subramanian ; Roodi, Gholam Hossein ; Vasanthkumar, Vinay Kumar ; Yalcin, Yagizer ; Blake, Calvin ; Almikati, Abdurrahman ; Mikati, Abed
• Corporate Creators:
  University of Texas at Austin. Center for Transportation Research
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Aggregates Base Layer Field Monitoring Geosynthetics Instrumentation Geogrids Monitoring Pavement Layers Soil Stabilization Unbound Aggregates
• Publication/ Report Number:
  FHWA/TX-24/5-4829-05-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas;United States
• Edition:
  April 2018 – July 2023
• Corporate Publisher:
  University of Texas at Austin. Center for Transportation Research
• Abstract:
  This project includes the instrumentation and post-construction monitoring of pavement test sections that incorporate geogrids for base stabilization along IH10 frontage roads east of San Antonio. Specifically, and as part of a full-depth frontage road rehabilitation, the test sections were constructed with an unbound aggregate base layer stabilized with three different geogrids, as well as control sections, which were instrumented extensively. The pavement materials and geogrids were characterized in the laboratory and field through a number of different methods. Post-construction, the pavement layers were characterized periodically, at six-to-12-month intervals, in addition to long-term monitoring involving sensors under environmental and traffic loads. Characterization test results indicated that the stabilized sections showed a time-dependent improvement in performance due to the increasing mobilization of the geogrids. The long-term sensor data also showed that, upon application of known traffic loads, the strains in the stabilized sections were significantly lower than those in the control section, thereby quantifying the lateral restraint provided by the various geogrids. Recommendations for continued long-term monitoring and testing, in addition to experimental programs, are provided to facilitate further understanding of the mechanisms involved in geogrid stabilization and the differentiation among the performance of various geogrid types.
• Format:
  PDF
• Funding:
  5-4829-05
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:00bb750df1e7b6ce67c049b932788dc6f0cbce803c02baa752bd44558e949bfe7fd6611b89c561f9ccec07e3091f9cf62f177b358e8bd7c940f140fec021222e
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/79687/dot_79687_DS1.pdf
• File Type:
  [PDF - 15.93 MB ]