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(Automatic translation)

Evaluation of a polymeric additive synthesized from glycerol for the production of warm mix asphalt in Colombia

Diana A. ROJAS AVELLANEDA
Grupo de Investigación en Polímeros GIP, Escuela de Ingeniería Química, Universidad Industrial de Santander (UIS) (680002 Bucaramanga, Colombia)

Luz S. QUINTERO RANGEL
Grupo de Investigación en Materiales, Asfaltos y Mezclas Asfálticas para Pavimentos Flexibles, Corasfaltos (Piedecuesta, Colombia)

Gustavo E. RAMÍREZ CABALLERO
Grupo de Investigación en Polímeros GIP, Escuela de Ingeniería Química, Universidad Industrial de Santander (UIS) (680002 Bucaramanga, Colombia)

Luis E. SANABRIA
Grupo de Investigación en Materiales, Asfaltos y Mezclas Asfálticas para Pavimentos Flexibles, Corasfaltos (Piedecuesta, Colombia)

ABSTRACT

In the present investigation, it was developed a polymeric additive from glycerol, a co-product of biodiesel industry, with the aim of produce Warm Mix Asphalt (WMA). The developed material was used as additive in 60/70 asphalt. The asphalt with the additive was characterized using differential scanning calorimetry M-DSC, chemical characterization by infrared spectroscopy FTIR, and morphological characterization by scanning electron microscopy (SEM). Additionally, it performance was evaluated through dynamic shear rheometer (DSR). From the thermal analysis, it was found that the binder heat capacity allows mixing temperatures with less heat input saving energy costs. From morphological characterization, it was possible to observe the asphalt colloidal structure. This result shows an increased stability of the colloidal structure in the asphalt with the developed additive making asphalt more resistant to thermos-oxidative aging.

KEYWORDS:

Bitumen, Binder, Asphalt mix, Glycerol, Additive, Warm mixture, Low-temperature mix, Aging, Bee structure.

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