TxDOT Research Library - TxDOT Research Project

Show:

Implementing the Next Generation of Ultra-thin Slurry Overlays

What Was the Need?

A new generation of slurries was developed in research project 0-6615, 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.

What's the Solution?

Through this implementation project, TxDOT will 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. Researchers will conduct performance evaluations and cost effective calculations, and make recommendations for statewide implementation.

Research Benefits

"This new generation of slurries offers tremendous opportunities to Texas as a low cost pavement preservation option especially in high traffic locations where good skid resistance must be restored quickly, with minimal disruption to traffic. Texas has many miles of both asphalt and concrete pavement in need of both sealing and increasing skid resistance. If these new materials perform as in the field as it does in the lab, it will provide multi-million dollar savings for TxDOT." --TxSTIC, 10/24/2016.

Project Number

5-6615-01

Status

Completed

link icon Copy link to this project.