Develop Surface Aggregate Classification of Reclaimed Asphalt Pavement: Technical Report

Details

• Alternative Title:
  Develop Surface Aggregate Classification of Reclaimed Asphalt Pavement [Project Title from Cover]
• Creators:
  Hu, Sheng ; Zhou, Fujie ; Scullion, Tom ; Fernando, Emmanuel ; Souliman, Mena
• Corporate Creators:
  Texas A&M Transportation Institute ; University of Texas at Tyler
• Corporate Contributors:
  Texas Department of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Aggregates Surface Aggregate Classification (SAC) DFT MPD Reclaimed Asphalt Pavements Skid Resistance Texture
• Publication/ Report Number:
  FHWA/TX-22/0-7025-R1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas;United States
• Edition:
  July 2019–April 2022
• Corporate Publisher:
  Texas A&M Transportation Institute
• Abstract:
  Pavement skid resistance is critical for public safety in wet-weather conditions. To improve pavement skid resistance, the use of Surface Aggregate Classification A (SAC-A) aggregate has increased significantly each year to meet the friction demand of pavements. Texas Department of Transportation specifications allow for the use of reclaimed asphalt pavement (RAP) to conserve natural resources and save costs. The unknown is the contribution of RAP to skid resistance and friction of the pavement surface, especially when pavements constructed with SAC-A are reclaimed and used for production. Intuitively, the RAP must have some contribution to friction, but this contribution has not been evaluated and quantified. The researchers conducted field evaluations, RAP and raw aggregate characterization, RAP mixture design, and RAP mixture slab testing. These investigations focused on the skid resistance and texture of aggregates, mixtures, and pavement surfaces. Based on the research results and findings, the researchers determined the potential of using RAP to conserve SAC-A resources and evaluated the impact of RAP on mixtures’ skid resistance. The preliminary criteria and guidelines were developed for using RAP in surface mixes to meet skid requirements. The rationale, description, and application of the criteria and guidelines are presented in this document. Further investigation is needed to refine the criteria and guidelines when more material (aggregate, RAP, and mixture) types are available.
• Format:
  PDF
• Funding:
  0-7025
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:d4e2f8f6385eaadb8bae2de87fc51d572711ba0cf3f1b8249a075bbd14ff5b35f6e88702dc48e3e3744c5ca4fd8c589160492fecce4e48767c4ffbe343037ab5
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/64286/dot_64286_DS1.pdf
• File Type:
  [PDF - 10.09 MB ]