Modelo reológico para la transición de fase sol-gel de fracciones pesadas del petróleo termoenvejecidas

a power-law rheological model is proposed in this paper: g′′ (w) ~ wn and g′ (w) ~ wn. 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.