Improving concrete overlay construction : executive summary.

Details

• Corporate Contributors:
  Iowa State University. National Concrete Pavement Technology Center ; Iowa. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Concrete Overlays Geotextiles Pavements, Concrete--Iowa--Design And Construction Portland Cement Concrete
• Publication/ Report Number:
  IHRB Project TR-600
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Edition:
  Executive summary.
• Corporate Publisher:
  Iowa State University. Institute for Transportation
• Abstract:
  As the US highway system ages and available funding diminishes, transportation agencies
  
  are looking for effective methods for preserving and extending the life of existing
  
  pavements. These agencies are also being encouraged to minimize construction times and
  
  reduce the impact to the traveling public. Currently, the most common method of
  
  rehabilitating an existing roadway surface is through an HMA overlay; however, high oil
  
  prices have caused designers and agencies to consider other methods. One alternative to
  
  the traditional HMA overlay is a concrete overlay. The Iowa Department of Transportation
  
  (Iowa DOT) and Iowa counties and cities have completed about 1,000 miles of concrete
  
  overlays that are in use and are serving the traveling public today.
  
  Despite the completion of hundreds of projects, some agencies are reluctant to use
  
  concrete overlays, believing that they are expensive, difficult to build, and have limited
  
  application.
  
  To address these concerns, the National Concrete Pavement Technology Center at Iowa
  
  State University developed a guide document to assist engineers in concrete overlay design
  
  and construction. The Guide to Concrete Overlays was published in September 2008 and
  
  includes detailed information on evaluating existing pavements as concrete overlay
  
  candidates, selecting and designing the appropriate type of concrete overlay, and guidance
  
  on concrete overlay construction. Since the publication of this guide, the need has arisen to
  
  develop methods to improve concrete overlay efficiency utilizing current technology,
  
  investigate innovative materials for use as bond breakers, and reduce the inconvenience to
  
  the public with improved methods of traffic control and increased opening time.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:121c3fd9e4c372f97a36f231c4476c80f2e804e460b2cd7d812971db6438fac0
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18060/dot_18060_DS1.pdf
• File Type:
  [PDF - 3.19 MB ]