Using the Primary Control Sieve Index to Define Gradation Type and as a Factor Related to Asphalt Mixture Properties

Gradation is one of the most influential aggregate characteristics affecting asphalt mixture properties and performance. The aggregate size distribution influences almost every important property of asphalt mixes. In this study, the Primary Control Sieve Index (PCSI) is defined as the difference in percentage passing between the given gradation and the point on the maximum density line at the primary control sieve and represents the relative coarseness or fineness of the gradation. PCSI was used as a variable that correlated with other asphalt mixture properties and found to be a potential surrogate for surface texture. The result of this study is the development of a simple way to quantify how fine or coarse a gradation is. The PCSI clearly shows the effect of varying gradations away from the maximum density line on the voids in mineral aggregates (VMA). The PCSI has demonstrated to be a factor related to several other characteristics and properties of hot mix asphalt, such as compactability, permeability and pavement surface texture.

• Record URL:
  • http://eng.auburn.edu/research/centers/ncat/files/technical-reports/rep21-01.pdf
• 
• Corporate Authors:

  National Center for Asphalt Technology

  Auburn University
  277 Technology Parkway
  Auburn, AL  United States  36830

  Puerto Rico Highway and Transportation Authority

  , Puerto Rico  United States 
• Authors:
  • Leiva, Fabricio
  • West, Randy
• Publication Date: 2021-1

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: 20p

Subject/Index Terms

• TRT Terms: Aggregate gradation; Air voids; Asphalt mixtures; Compactibility; Hot mix asphalt; Permeability; Sieve analysis; Texture
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01770648
• Record Type: Publication
• Report/Paper Numbers: NCAT Report 21-01
• Files: TRIS
• Created Date: Apr 28 2021 9:28AM