PHOSPHATE WASTE IN MIXTURES TO IMPROVE THEIR DEFORMATION

The objective of this research is to investigate the deformation behavior of asphalt concrete mixtures containing four phosphate waste fillers (12.7-mm reject, 4.5-mm reject, slime, and phosphogypsum) as compared with the behavior of a standard mixture containing limestone filler. The Marshall test results revealed that, generally, there was improved Marshall characteristics for the mixtures containing these wastes when compared with the standard mixture. The immersion wheel tracking machine results revealed that the 12.7-mm and 4.5-mm reject fillers increased resistance to deformation by 2.2 and 1.5 times, respectively, as compared with the standard mixture. As measured by the immersion wheel tracking machine, the effect of water on the slime and phosphogypsum indicated poor behavior of the mixtures containing both fillers. It is recommended that the slime and phosphogypsum fillers should not be used in wearing course mixtures. It was further concluded that the Marshall test method provided misleading conclusions with respect to the effects of water on the mixtures containing slime and phosphogypsum fillers and in terms of ranking mixtures in the order of their ability to resist deformation.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8674831
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Katamine, N M
• Publication Date: 2000-9

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 382-389
• Serial:
  • Journal of Transportation Engineering
  • Volume: 126
  • Issue Number: 5
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-947X
  • Serial URL: https://ascelibrary.org/journal/jtepbs

Subject/Index Terms

• TRT Terms: Aggregate gradation; Asphalt concrete pavements; Binder content; Deformation; Fillers (Materials); Limestone fillers; Marshall test; Mix design; Phosphates; Wastes; Water; Wearing course (Pavements)
• Uncontrolled Terms: Immersion wheel tracking machine
• Geographic Terms: Jordan
• Subject Areas: Design; Environment; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00798440
• Record Type: Publication
• Contract Numbers: DTFH61-93-X-00017, NSC-87-2211-E-08-011, HKUST719/96E
• Files: TRIS
• Created Date: Sep 17 2000 12:00AM