Study of Short Term Skid Improvements by Light Texturing with a Milling Machine

Skid problems on roads can result from flushing and bleeding where excessive road-mix binder can accumulate on a road's surface as well as general wear of the surface by traffic. This may result in a polished surface that may increase the chances of accidents due to the reduced skid resistance. Strategies to address this problem include mill and fill or overlay rehabilitation but another cost effective solution is to remove only the top portion of the surface course using light-texturing or micro-milling. Using this process a pavement milling machine can remove as little as 3/8 inches off the surface. Unlike a typical mill-and-fill operation, there is not an additional step in laying a new wearing course after milling has been completed. Instead, the newly exposed surface will already have the desired final texture and noise properties, and can be opened to traffic sooner. Some Texas districts have already implemented this technology and have achieved substantially improved skid resistance and reduced rutting with no detrimental effects to the existing pavement. However, these texturing improvements have not been studied to determine how well they improve skid and how long that skid improvement lasts. Therefore, there is an immediate need for conducting a study that can assist the Texas Department of Transportation (TxDOT) districts better understand the effect of light-texturing in improving the skid resistance and also to identify the best practice of employing this technology. Consequently, the objective of this research is optimize the light-texturing process by evaluating variables such as the number of teeth on drum, speed of the milling machine, the depth of milling, cutting pattern, pavement type, type of aggregate, climatic zone, traffic loading, etc. Preand post-milled sections will be skid tested to investigate these influence variables. Based on a thorough statistical analysis of the data, recommendations and guidelines towards improving light-texturing procedures will be prepared.

Language

  • English

Project

  • Status: Completed
  • Funding: $297468.00
  • Contract Numbers:

    0-6752

  • Sponsor Organizations:

    Texas Department of Transportation

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

    Pete, Kevin

  • Performing Organizations:

    University of Houston, Texas

    Houston, TX  United States 

    University of Texas, Austin

    Center for Transportation Research
    Austin, TX  United States 
  • Principal Investigators:

    Gao, Lu

  • Start Date: 20120906
  • Expected Completion Date: 0
  • Actual Completion Date: 20140831
  • Source Data: RiP Project 33842

Subject/Index Terms

Filing Info

  • Accession Number: 01566828
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-6752
  • Files: RiP, STATEDOT
  • Created Date: Jun 23 2015 1:02AM