Recycling of Highway Gulley Waste in Cold Mix Asphalt

Highway gulley waste is formed by dirt and detritus from the road surface collecting in road side gulley pots. These need periodic cleaning to ensure that effects of rain fall can be adequately maintained. The resulting waste is typically sent to landfill. It is regarded as fine non-inert material with potential to pollute and so attracts higher landfill tax in the United Kingdom. Research at the University of Ulster has been considering the suitability of this material as a secondary aggregate source to replace the fine aggregate content of bituminous mixes. This has shown that encapsulation by bitumen to form hot mix asphalt results in materials with properties that may out perform those containing virgin aggregates. However, gully waste can contain up to 45% moisture and must be dried prior to addition to a hot mix. This paper reports on a current investigation to determine whether this problem of drying can be reduced by using the gulley waste as part of a cold mix asphalt. This would have considerable savings in terms of energy use. The addition of gulley waste on the properties of Foamix has been evaluated using a range of standard and non-standard laboratory testing. The results of a testing program that investigated optimizing the amount that may be added, the effect of bitumen content, short and long-term aging, fatigue and permanent deformation are given. The research has shown that gulley waste can be added to cold mix asphalt without detrimental effect on mix properties. At present the findings are being used to design a full-scale road trial for spring 2005.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/18079458
• Corporate Authors:

  Universidade Presbiteriana Mackenzie

  Rua da Consolacao, 930
  , Sao Paulo  Brazil 
• Authors:
  • Woodward, D
  • Woodside, A
  • Jellie, J
  • Allan, D
• Conference:
  • 2005 International Symposium on Pavement Recycling
  • Location: Sao Paulo , Brazil
  • Date: 2005-31-4 to 2005-31-6
• Publication Date: 2005

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; Tables;
• Pagination: 10p
• Monograph Title: 2005 International Symposium on Pavement Recycling
• Serial:
  • 2005 International Symposium on Pavement Recycling
  • ISSN: 1807-9458

Subject/Index Terms

• TRT Terms: Aggregates; Asphalt mixtures; Bitumen; Cold mix paving mixtures; Foamed asphalt; Foamed materials; Gullies; Hot mix asphalt; Pavement distress; Wastes
• Subject Areas: Environment; Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01083223
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 31 2007 7:37AM