PROPERTIES OF BITUMINOUS MIXTURES CONTAINING DIFFERENT FILLERS

This paper is aimed at characterizing the role of fillers in bituminous mixtures. Emphasis is mainly given to the low temperature properties of bituminous mixes. Four types of filler (limestone, quartz, fly ash, and kaolin) with different physical properties were evaluated. The characteristics of the fillers were determined using several different physical tests. It was found that the dry compacted filler test method is a good test method for filler characterization. Some modifications in the test procedure were made in order to produce more repeatable results. The four fillers were combined with one type of bitumen at different filler levels and routine bitumen tests were carried out. The temperature susceptibility of the various filler-bitumen mixes were determined using the penetration index values. The results of the viscosity testing showed how the fillers stiffened the filler-bitumen mixes. The filler-bitumen ratios used in the study were evaluated in a typical dense-graded asphaltic concrete mix. Marshall testing was performed at different temperatures ranging from 30 to 70 deg C and two Marshall test parameters, namely, Marshall temperature index of stability and Marshall temperature index of stiffness, were determined. Flexural testing was also carried out at a range of different low temperatures to determine the flexural properties of mixes containing different types and amounts of fillers. A toughness parameter (i.e., the area under stress-strain curve in flexural testing) was evaluated at different low temperatures. It was found that, for each mix, there is an optimum filler content corresponding to maximum toughness. For the fillers tested in this research, the maximum toughness corresponded to a region of filler/bitumen ratio between 0.25 and 0.75.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02702932
• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Kavussi, A
  • Hicks, R G
• Conference:
  • Asphalt Paving Technology 1997
  • Location: Salt Lake City, Utah
  • Date: 1997-3-17 to 1997-3-19
• Publication Date: 1997

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 153-186
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Volume: 66
  • Publisher: Association of Asphalt Paving Technologists (AAPT)
  • ISSN: 0270-2932
  • Serial URL: https://www.asphalttechnology.org/site_page.cfm?pk_association_webpage_menu=9169&pk_association_webpage=19109

Subject/Index Terms

• TRT Terms: Asphalt concrete; Bitumen; Bituminous mixtures; Fillers (Materials); Flexural strength; Fly ash; Kaolin; Limestone; Low temperature; Marshall test; Materials tests; Properties of materials; Quartz; Toughness; Viscosity
• Old TRIS Terms: Bitumen tests; Fillers; Viscosity test
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00752117
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Aug 7 1998 12:00AM