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 Mixtures Asphalt Pavements Durability Fatigue Cracking Hot Mix Paving Mixtures Pavement Performance Reclaimed Asphalt Pavements Recycled Materials Warm Mix Paving Mixtures
• 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.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:9ccedf2b1567231dbeb720ac25209c553c62b7869852bec6e662475b5c7baafb
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29198/dot_29198_DS1.pdf
• File Type:
  [PDF - 145.68 KB ]