Implementing the Next Generation of Ultra-thin Slurry Overlays

In research project 0-6615, Use of Fine Graded Asphalt Mixes, the research team developed a new generation of slurries to be implemented in test sections around Texas. This new generation of slurries has not been evaluated widely by TxDOT, but several TxDOT districts have expressed an interest in getting access to this equipment for placing these extra-thin mixes as monitor sections with each district’s in-house special jobs crews. These new slurries require the use of the next generation slurry placement system, which are not widely available in Texas. This has created a situation where the districts want to place test sections, but the local contractors do not own this new equipment. TxDOT will not let large projects until demonstration sections are constructed and monitored, and the contractors will not purchase the equipment until large projects are let. Through this implementation project, TxDOT shall validate that the excellent lab results obtained with the slurries translates to superior long-term pavement performance in several districts. This will involve placing multiple test sections in a minimum of four districts. The research team shall conduct performance evaluations and cost effective calculations, and make recommendations for statewide implementation.

• Record URL:
  https://library.ctr.utexas.edu/Presto/content/Detail.aspx?ctID=M2UxNzg5YmEtYzMyZS00ZjBlLWIyODctYzljMzQ3ZmVmOWFl&rID=NTcx&sID=MQ==&qrs=VHJ1ZQ==&q=KHJwLlN0YXR1czooYWN0aXZlKSkgQU5EIChycC5TdGFydERhdGU9WzIwMTcwNDE5MDAwMDAwIFRPIDIwMTcxMDE2MjM1OTU5XSkgQU5EIChycC5jYXRkYXRlPVsyMDE3MDEwMTAwMDAwMCBUTyA5OTk5MTIzMTIzNTk1OV0p&qcf=M2UxNzg5YmEtYzMyZS00ZjBlLWIyODctYzljMzQ3ZmVmOWFl&rrtc=VHJ1ZQ==

Language

• English

Project

• Status: Active
• Funding: $300000
• Contract Numbers:

  5-6615-01

• Sponsor Organizations:

  Texas Department of Transportation

  125 E. 11th Street
  Austin, TX  United States  78701-2483
• Project Managers:

  Odell, Wade

• Performing Organizations:

  Texas Transportation Institute

  Texas A&M University System
  3135 TAMU
  College Station, TX  United States  77843-3135
• Principal Investigators:

  Scullion, Tom

• Start Date: 20170514
• Expected Completion Date: 20190831
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Chip seals; Friction course; Implementation; Low volume roads; Open graded aggregates; Pavement performance; Seal coats; Sealing compounds; Thickness
• Subject Areas: Highways; I22: Design of Pavements, Railways and Guideways; I30: Materials; I31: Bituminous Binders and Materials; I36: Aggregates;

Filing Info

• Accession Number: 01648544
• Record Type: Research project
• Source Agency: Texas Department of Transportation
• Contract Numbers: 5-6615-01
• Files: RiP, STATEDOT
• Created Date: Oct 18 2017 11:10AM