Rheological model for sol-gel phase transition of thermo-aged heavy oil fractions
Ingenieria e Investigacion, ISSN: 0120-5609, Vol: 30, Issue: 1, Page: 28-34
2010
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Metrics Details
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Article Description
A power-law rheological model is proposed in this paper: G'' (ω) ∼ ω and G' (ω) ∼ ω. It represents the increased connectivity between thermo-aged asphalt molecules in a rheo-reactor as one of the applications of systematic rheology. The results confirmed a sol-gel phase transition tendency for aged asphalt in the experimental frequency window at temperatures below 40°C. Such pattern could have been related to the structuring effect arising from the thermo-oxidative asphalt aging process during continuous agitation which has been suitably described by the micellar model of asphalt.
Bibliographic Details
Universidad Nacional de Colombia
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