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
  • Glass fiber reinforced concrete
  • Fiber reinforced concrete
  • Pavement cracking
  • Composite pavements
  • Glass-grid
  • 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.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17100/dot_17100_DS1.pdf
• File Type:
  [PDF - 186.09 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:bd2daf1b2b472a8837ad484cbe69c4271c12559a2019d64f909ffe416d862e9b