EVALUATION OF SEVERAL MINERAL FILLERS FOR USE IN ITEM 340 HOT-MIX ASPHALTIC CONCRETE

The characteristics of mineral filler materials have been investigated to determine their potential in upgrading the performance of asphaltic concrete, especially by increasing hot-mix stability and durability to alleviate problems with rutting and shoving. Three phases of testing were conducted. These included (1) testing of mineral fillers alone, (2) testing asphalt cements, and (3) testing of mastics composed of mineral filler and asphalt cements. Both the testing of the fillers alone and testing of the asphalt cement-mineral filler mastics revealed significant differences among the different fillers and filler blends. These differences are believed to portend important differences among hot-mixes constructed using the different mineral filler types. Based on previous research and the limited work done in this substudy, the use of certain mineral fillers offers enhanced opportunity for increased stiffness and strength in asphalt concrete. (Author)

• Record URL:
  • https://library.ctr.utexas.edu/hostedpdfs/tti/285-3.pdf
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/85744
• Supplemental Notes:
  • Research performed in cooperation with The Federal Highway Administration, Research Study Title: Asphalt Concrete Mixture Design and Specifications.
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011

  Texas State Department of Highways & Public Transportation

  Transportation Planning Division, P.O. Box 5051
  Austin, TX  United States  78763
• Authors:
  • Benson, F C
  • Martinez, D F
• Publication Date: 1984-5

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: 83 p.

Subject/Index Terms

• TRT Terms: Asphalt concrete; Durability; Fillers; Hot mix asphalt; Mastic asphalt; Minerals; Ruts (Pavements); Stability (Mechanics); Stiffness; Strength of materials
• Uncontrolled Terms: Rut
• Old TRIS Terms: Mastics
• Subject Areas: Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00395905
• Record Type: Publication
• Report/Paper Numbers: FHWA-TX-85-1+285-3 Intrm Rpt
• Contract Numbers: Study 2-9-80-285
• Files: NTL, TRIS, STATEDOT
• Created Date: Oct 31 1985 12:00AM