Design and analysis procedures for asphalt mixtures containing high RAP contents and/or RAS : [research project capsule].

Details

• Creators:
  Mohammad, Louay
• Corporate Creators:
  Louisiana Transportation Research Center
• Subject/TRT Terms:
  • Asphalt pavements
  • Asphalt mixtures
  • Recycled materials
  • Reclaimed asphalt pavements
  • Durability
  • Fatigue cracking
  • Warm mix paving mixtures
  • Hot mix paving mixtures
  • Pavement performance
• Publication/ Report Number:
  14-5PF
• Resource Type:
  Brief
• Geographical Coverage:
  Louisiana
• Corporate Publisher:
  Louisiana Transportation Research Center
• Abstract:
  Asphalt recycling has become an important instrument used to minimize production ; costs of new pavements as well as to mitigate its impacts of the environment. Some of ; the benefi ts of utilizing recycled materials include the conservation of nonrenewable ; natural resources, such as virgin aggregates and asphalt binder; reduction in the amount ; of construction debris disposed of in landfi lls; decrease of the variability in material ; expenditures; and potential reduction of the overall life-cycle costs. Recycling also ; helps to cut greenhouse gas emissions by reducing the energy spent on the extraction ; and processing of petroleum products and aggregates. Moreover, the increasing price ; of asphalt binder along with more restrictive environmental legislation has forced ; the highway agencies and contractors to search for novel materials and construction ; techniques. Such eff orts are aimed at fulfi lling the current sustainability needs without ; compromising the pavement quality and performance. There is currently considerable ; emphasis on the use of reclaimed asphalt pavement (RAP) as preferred recycled ; material for highway construction due to its abundance and successful prior experiences. ; Recycled asphalt shingles (RAS) have also become another promising recycling ; candidate due to their potential use in asphalt mixtures. However, to ensure successful ; use of RAP and/or RAS, many concerns relating to the chemical and physical interactions ; among virgin and recycled materials as well as the durability of the produced mixture ; must be addressed.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29198/dot_29198_DS1.pdf
• File Type:
  [PDF - 145.68 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:9ccedf2b1567231dbeb720ac25209c553c62b7869852bec6e662475b5c7baafb