ASPHALT CONCRETE MIXTURE PRODUCTION PROBLEMS RELATED TO LIGHT CONSTITUENTS IN ASPHALTS (WITH DISCUSSION)

The Florida Department of Transportation anticipated that asphalts with excessive light ends (high volatile fractions) would eventually become available for use on state paving projects. Their concern over the potential problems that could evolve from the use of these asphalts resulted in the development of a research project involving the cooperation of numerous participants. The research encompassed the use of ordinary and high volatile content asphalts in the production of hot mix from batch and drum mix plants with and without preprocessing by steam distillation of the asphalt cement to provide eight test sections of pavement. The initial results of the testing program are presented in this paper. The primary objective of the investigation was to determine if asphalts containing high percentages of light fractions could be related to any changes in mix properties and pavement performance when compared to paving mixtures with a typical light fraction asphalt cement. Specific objectives included evaluation and comparison of the differences in asphalt characteristics, mixture properties and performance between (1) batch plant and drum mix plant, (2) typical and high light fraction asphalt cements, (3) preprocessed steam distilled typical and high light fraction asphalt cements, and (4) each combination of the variables listed in items 1, 2, and 3.

• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Page, G
  • Murphy, K H
  • Ruth, B E
• Conference:
  • Association of Asphalt Paving Technologists Proc
• Publication Date: 1986

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 277-313
• Serial:
  • Volume: 55

Subject/Index Terms

• TRT Terms: Asphalt cement; Asphalt plants; Distillation; Drums (Containers); Hot mix asphalt; Mixers; Mixing plants; Pavement performance; Properties of materials; Steam; Test sections
• Old TRIS Terms: High volatile content; Steam distillation
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00739648
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 5 1997 12:00AM