Investigating the Effectiveness of Enzymatic Stabilizers for Reclaimed Stabilized Base Projects (3.13)

Rehabilitation of existing pavement structures is a primary objective in many roadway constructions projects in New England (NE) region. Reclaimed stabilized base (RSB) with an appropriate stabilizing agent is an appealing option for many rehabilitation projects. Depending on the type of base layer, various traditional stabilizing agents (e.g. cement, lime, calcium chloride, asphalt emulsion) are used in RSB projects to rehabilitate roadways by reclaiming the base material. Despite their advantages, traditional stabilizers entail some disadvantages (e.g. chemical reactions that might lead to disintegration of bonds). An alternative to the traditional stabilizers is using enzymatic stabilizers (e.g. lingosulphonate, terrazyme, bio-grouting) or a combination of an enzyme with traditional stabilizers in RSB leading to an improved stabilization outcome. The overarching goal of this project is to evaluate the effectiveness of enzymatic stabilizers in RSB projects in Vermont and the NE region. The outcomes of this project will provide the Vermont Agency of Transportation (VTrans) and other NE Departments of Transportation (DOTs) with the right tools (e.g. guidelines and recommendation) that will assist engineers in (i) determining the appropriate enzymatic agent for the type of base/subbase material, (ii) improving the success rate of the RSB projects while using sustainable techniques, (iii) increasing pavement durability and service life and consequently savings in maintenance costs, and (iv) increasing roadway safety.

• Record URL:
  https://tidc.umaine.edu/tidc_project/3-13-uvm/

Language

• English

Project

• Status: Active
• Funding: $538,278
• Contract Numbers:

  69A3551847101

• Sponsor Organizations:

  Transportation Infrastructure Durability Center

  University of Maine
  Orono, ME  United States  04469

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590

  University of Vermont, Burlington

  College of Engineering and Mathematics
  33 Colchester Avenue, 109 Votey Building
  Burlington, VT  United States  05405-0156

  Vermont Agency of Transportation

  219 North Main Street
  Barre, VT  United States  05641
• Managing Organizations:

  Transportation Infrastructure Durability Center

  University of Maine
  Orono, ME  United States  04469

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590

  University of Vermont, Burlington

  College of Engineering and Mathematics
  33 Colchester Avenue, 109 Votey Building
  Burlington, VT  United States  05405-0156
• Project Managers:

  Dunn, Denise

• Performing Organizations:

  Transportation Infrastructure Durability Center

  University of Maine
  Orono, ME  United States  04469

  University of Vermont, Burlington

  College of Engineering and Mathematics
  33 Colchester Avenue, 109 Votey Building
  Burlington, VT  United States  05405-0156
• Principal Investigators:

  Ghazanfari, Ehsan

• Start Date: 20200901
• Expected Completion Date: 20250815
• Actual Completion Date: 0
• USDOT Program: University Transportation Centers Program

Subject/Index Terms

• TRT Terms: Durability; Pavement maintenance; Reclaimed asphalt pavements; Rehabilitation; Stabilized materials
• Geographic Terms: New England; Vermont
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 01851421
• Record Type: Research project
• Source Agency: Transportation Infrastructure Durability Center
• Contract Numbers: 69A3551847101
• Files: UTC, RIP
• Created Date: Jul 14 2022 12:01PM