Publicación: OPTIMISED SUNFLOWER OIL CONTENT FOR ENCAPSULATION BY VIBRATING TECHNOLOGY AS A REJUVENATING SOLUTION FOR ASPHALT SELF-HEALING
Fecha
2023
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Editor
Polymers
Resumen
THIS STUDY AIMED TO DETERMINE AN OPTIMAL DOSAGE OF SUNFLOWER OIL (I.E., VIRGIN COOKING
OIL, VCO) AS A REJUVENATOR FOR ASPHALT SELF-HEALING PURPOSES, EVALUATING ITS EFFECT ON THE CHEMICAL
(CARBONYL, AND SULFOXIDE FUNCTIONAL GROUPS), PHYSICAL (PENETRATION, SOFTENING POINT, AND VISCOSITY), AND RHEOLOGICAL (DYNAMIC SHEAR MODULUS, AND PHASE ANGLE) PROPERTIES OF LONG-TERM AGED (LTA)
BITUMEN. FIVE CONCENTRATIONS OF SUNFLOWER OIL (VCO) WERE USED: 1%, 2%, 3%, 4%, AND 5% VOL. OF LTA
BITUMEN. VCO WAS ENCAPSULATED IN ALGINATE BIOPOLYMER UNDER VIBRATING JET TECHNOLOGY USING THREE
BIOPOLYMER:OIL (B:O) MASS RATIOS: 1:1, 1:5, AND 1:9. THE PHYSICAL, THERMAL, AND MECHANICAL PROPERTIES OF
THE CAPSULES WERE STUDIED, AS WELL AS THEIR EFFECT ON THE PHYSICAL PROPERTIES OF DENSE ASPHALT MIXTURES.
THE MAIN RESULTS SHOWED THAT AN OPTIMAL VCO CONTENT OF 4% VOL. RESTORED THE CHEMICAL, PHYSICAL,
AND RHEOLOGICAL PROPERTIES OF LTA BITUMEN TO A SHORT-TERM AGEING (STA) LEVEL. VCO CAPSULES WITH
B:O RATIOS OF 1:5 PRESENTED GOOD THERMAL AND MECHANICAL STABILITY, WITH HIGH ENCAPSULATION EFFICIENCY.
DEPENDING ON THE B:O RATIO, THE VCO CAPSULE DOSAGE TO REJUVENATE LTA BITUMEN AND ASPHALT MIXTURES
VARIED BETWEEN 5.03?15.3% WT. AND 0.24?0.74% WT., RESPECTIVELY. FINALLY, THE CAPSULE MORPHOLOGY
SIGNIFICANTLY INFLUENCED THE BULK DENSITY OF THE ASPHALT MIXTURES.
Descripción
Palabras clave
sunflower oil, rheology, capsule dosage, bitumen rejuvenation, asphalt self-healing
