2319 Comparative Performance of Geotextile Products for Subgrade Stabilization through Plate Load Tests

Different geosynthetic manufacturers and suppliers continuously produce newer subgrade stabilization products and advocate for their use in the Oklahoma Department of Transportation (ODOT)-sponsored and other roadway projects in Oklahoma, which makes it essential for ODOT to have an objective and reliable set of guidelines and product evaluation program for the acceptance and use of such products based on their measured performance in conjunction with soils that would be representative of those encountered regularly across the state. This project aims to address this need for ODOT by testing different subgrade stabilization geotextile products using nominally identical aggregate base-subgrade models in the laboratory so that their performances can be quantified and compared consistently and reliably in terms of their corresponding Settlement Reduction Factors (SRF) and Traffic Benefit Ratios (TBR) for field applications (Mahmood 2013). These factors can help ODOT engineers quantify the benefit of individual geotextile products directly relative to unreinforced (i.e. control) conditions, especially to implement for the project conditions and requirements they encounter in Oklahoma. The research team will also search for any data available from other states to determine any specific trends and variations in the TBR and SRF values for different geotextile products on subgrade soils in Oklahoma as compared to those reported on other subgrades, which can also be beneficial for verification purposes relative to the results of the study. ASTM D 8462 (ASTM 2022) will be used to carry out the plate load tests. The products that will be included in this study are those which are most often used in Oklahoma, as well as those promoted by other manufacturers as equivalent alternatives at lower prices, and higher-end products to determine practical upper-bound values for the benefits expected from subgrade stabilization products for future cost benefit analysis.

Language

• English

Project

• Status: Active
• Funding: $130000
• Contract Numbers:

  2319

  SPRY-0010(095)RS

• Sponsor Organizations:

  Oklahoma Department of Transportation

  200 NE 21st Street
  Oklahoma City, OK  United States  73105
• Managing Organizations:

  Oklahoma Department of Transportation

  200 NE 21st Street
  Oklahoma City, OK  United States  73105
• Project Managers:

  Rice, Jerry

  Garland, Gregory

• Performing Organizations:

  University of Oklahoma, Norman

  School of Civil Engineering and Environmental Science
  202 West Boyd Street, Room 334
  Norman, OK  United States  73019
• Principal Investigators:

  Hatami, Kianoosh

• Start Date: 20241001
• Expected Completion Date: 20260331
• Actual Completion Date: 0
• USDOT Program: Transportation, Planning, Research, and Development

Subject/Index Terms

• TRT Terms: Geosynthetics; Soil stabilization; Subgrade (Pavements); Subgrade materials
• Geographic Terms: Oklahoma
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01932074
• Record Type: Research project
• Source Agency: Oklahoma Department of Transportation
• Contract Numbers: 2319, SPRY-0010(095)RS
• Files: RIP, STATEDOT
• Created Date: Sep 26 2024 3:59PM