BAGHOUSE FINES IN ASPHALT MIXES

This research study was accomplished to establish criteria for the reintroduction of baghouse fines into Hot Mix Asphalt (HMA) mixtures. Baghouse fines were obtained from a total of 18 HMA plants in South Carolina. These samples were subjected to a particle size analysis using a Coulter LS200 particle size analyzer and then tested using the modified Rigden's void test. Based on the results of this testing, ten plants were chosen to have samples combined to form ten combined baghouse fine samples. These ten combined samples were then added to asphalt binders and subjected to various mortar tests. Five of these combined baghouse fine samples were then selected to be added to asphalt binders and aggregate and subjected to various HMA tests. Findings of this research indicate that a property derived from the modified Rigden's void test (percent bulk volume of a compacted dust) can be used to indicate the contribution of a mortar to a HMA's resistance to permanent deformation, fatigue cracking, and low temperature cracking. Based on the research, a critical value of 55% was found.

• Record URL:
  https://rosap.ntl.bts.gov/view/dot/39975
• Corporate Authors:

  National Center for Asphalt Technology

  Auburn University, 277 Technology Parkway
  Auburn, AL  United States  36830

  South Carolina Department of Transportation

  955 Park Street, P.O. Box 191
  Columbia, SC  United States  29202

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Hanson, D I
  • Cooley Jr, L A
• Publication Date: 1997-11

Language

• English

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 350 p.

Subject/Index Terms

• TRT Terms: Asphalt tests; Cracking; Deformation; Fines (Materials); Furnaces; Hot mix asphalt; Low temperature; Low temperature tests; Sieve analysis; Void ratios
• Uncontrolled Terms: Baghouse fines; Voids
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00745799
• Record Type: Publication
• Report/Paper Numbers: FHWA-SC-97-01, Final Report
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: Feb 25 1998 12:00AM