Cost effective prevention of reflective cracking of composite pavement : research project capsule.

Details

• Creators:
  Elseifi, M.
• Corporate Creators:
  Louisiana Transportation Research Center
• Corporate Contributors:
  Louisiana. Dept. of Transportation and Development ; Louisiana State University (Baton Rouge, La.)
• Subject/TRT Terms:
  Composite Pavements Fiber Reinforced Concrete Glass-grid Glass Fiber Reinforced Concrete Pavement Cracking Reflective Cracking
• Publication/ Report Number:
  08-1P
• Resource Type:
  Tech Report
• Geographical Coverage:
  Louisiana
• Edition:
  Research project capsule; Dec. 2008.
• Corporate Publisher:
  Louisiana Transportation Research Center
• Abstract:
  Reflection cracks are caused by discontinuities (cracks or joints) in underlying layers, which
  
  propagate through a hot-mix asphalt (HMA) overlay due to continuous movement at the crack
  
  prompted by thermal and traffic loading. If the new overlay is bonded to the distressed layer,
  
  cracks in the existing pavement usually propagate to the surface within one to five years and
  
  even as early as few months have been reported. Excessive seasonal temperature variations
  
  and movements of a cement-treated base layer may also result in shrinkage cracking, which
  
  extends to the pavement surface to cause reflection block cracks. Reflection cracking leads to
  
  premature failure of overlays by allowing water infiltration through the cracks, which cause
  
  stripping in HMA layers and weakening and deterioration of the base and/or subgrade.
  
  Since the early 1930s, considerable resources and efforts have been spent to find new and
  
  relatively inexpensive techniques to delay reflection cracking. Different methods, including the
  
  use of interlayer systems (e.g., glassgrid, stress absorbing membranes, paving fabrics, etc.)
  
  and rubblization, have been suggested for enhancing pavement resistance to reflective
  
  cracking. Experimental investigations of these crack control treatments indicate that their
  
  performances have been mixed and cannot be considered conclusive.
  
  Louisiana has experience with various techniques and treatments to control reflection
  
  cracking since the 1970s; however, the cost-effectiveness and performance of these methods
  
  have not been reliably evaluated. In addition, scientific evaluation and testing of these
  
  treatment methods was not performed on many projects. To ensure successful control of this
  
  distress and effective allocation of maintenance funds, there is a critical need to assess the
  
  performance of pavement sections across the state built with various treatment methods and
  
  to determine the most cost-effective techniques to delay or to prevent reflection cracking in
  
  composite pavements.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:bd2daf1b2b472a8837ad484cbe69c4271c12559a2019d64f909ffe416d862e9b
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17100/dot_17100_DS1.pdf
• File Type:
  [PDF - 186.09 KB ]