X-ray fluorescence detection of waste engine oil residue in asphalt and its effect on cracking in service
@article{Hesp2010XrayFD, title={X-ray fluorescence detection of waste engine oil residue in asphalt and its effect on cracking in service}, author={S. Hesp and H. F. Shurvell}, journal={International Journal of Pavement Engineering}, year={2010}, volume={11}, pages={541 - 553} }
This paper documents the discovery of waste engine oil residues in pavements across Ontario, Canada. We have found that recovered asphalts from a large majority of poorly performing contracts test positive for zinc through X-ray fluorescence (XRF) analysis. In contrast, neither the aggregates nor any of the well-performing asphalts showed any signs of the metal. Since zinc dialkyldithiophosphates are universal additives in engine oils, we inferred that the use of waste oil residues in asphalt… CONTINUE READING
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