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A platform for research: civil engineering, architecture and urbanism
Evaluation of a rejuvenator as an additive in asphalt ; Valoración de un rejuvenecedor como aditivo en el asfalto
Ecuadorian asphalt has the particularity of being prone to premature aging; therefore, the asphalt pavements have insufficient durability. The objective of this experimental work is to assess the effect that a modification with the rejuvenating agent Sylvaroad RP-1000 produces on the properties of AC 20 asphalt from the Esmeraldas Refinery, as well as evaluating its impact on the quality of a typical asphalt mix, without reclaimed asphalt pavement, prepared with modified and unmodified asphalt. The asphalt used is also classified as PG 64-22 and when mixed with 2.5% by weight of the rejuvenator, the grade changed to PG 58-28. Additional studies were carried out using the ΔTc, Glover-Rowe parameters and the corresponding transition temperatures, showing improvements in the results. At that point, a dense mix with 5.5% asphalt was designed. Stiffness modulus, cyclic compression and fatigue modulus tests were applied with the NAT equipment to the specimens. When using modified asphalt, the fatigue behavior improved remarkably. Additionally, an aging process in oven at 85 ° C was applied to both mixtures, measuring the stiffness modulus and fatigue at 8 days, which demonstrated an adequate behavior only in the mixture made with rejuvenator. ; El asfalto ecuatoriano tiene la particularidad de ser proclive al envejecimiento prematuro incidiendo en que los pavimentos asfálticos presenten una insuficiente durabilidad. El objetivo de este trabajo experimental es valorar el efecto que produce en las propiedades del asfalto AC 20, procedente de la Refinería de Esmeraldas, su modificación con el agente rejuvenecedor Sylvaroad RP-1000; así como evaluar su incidencia en la calidad de una mezcla asfáltica típica, sin material fresado, preparada con asfalto sin modificar y modificado con rejuvenecedor. El asfalto utilizado clasifica como PG 64-22 y al ser mezclado con 2.5% en peso del rejuvenecedor, su grado cambió a PG 58-28. Se realizaron estudios adicionales empleando los parámetros ΔTc, Glover-Rowe y las temperaturas de ...
Evaluation of a rejuvenator as an additive in asphalt ; Valoración de un rejuvenecedor como aditivo en el asfalto
Ecuadorian asphalt has the particularity of being prone to premature aging; therefore, the asphalt pavements have insufficient durability. The objective of this experimental work is to assess the effect that a modification with the rejuvenating agent Sylvaroad RP-1000 produces on the properties of AC 20 asphalt from the Esmeraldas Refinery, as well as evaluating its impact on the quality of a typical asphalt mix, without reclaimed asphalt pavement, prepared with modified and unmodified asphalt. The asphalt used is also classified as PG 64-22 and when mixed with 2.5% by weight of the rejuvenator, the grade changed to PG 58-28. Additional studies were carried out using the ΔTc, Glover-Rowe parameters and the corresponding transition temperatures, showing improvements in the results. At that point, a dense mix with 5.5% asphalt was designed. Stiffness modulus, cyclic compression and fatigue modulus tests were applied with the NAT equipment to the specimens. When using modified asphalt, the fatigue behavior improved remarkably. Additionally, an aging process in oven at 85 ° C was applied to both mixtures, measuring the stiffness modulus and fatigue at 8 days, which demonstrated an adequate behavior only in the mixture made with rejuvenator. ; El asfalto ecuatoriano tiene la particularidad de ser proclive al envejecimiento prematuro incidiendo en que los pavimentos asfálticos presenten una insuficiente durabilidad. El objetivo de este trabajo experimental es valorar el efecto que produce en las propiedades del asfalto AC 20, procedente de la Refinería de Esmeraldas, su modificación con el agente rejuvenecedor Sylvaroad RP-1000; así como evaluar su incidencia en la calidad de una mezcla asfáltica típica, sin material fresado, preparada con asfalto sin modificar y modificado con rejuvenecedor. El asfalto utilizado clasifica como PG 64-22 y al ser mezclado con 2.5% en peso del rejuvenecedor, su grado cambió a PG 58-28. Se realizaron estudios adicionales empleando los parámetros ΔTc, Glover-Rowe y las temperaturas de ...
Evaluation of a rejuvenator as an additive in asphalt ; Valoración de un rejuvenecedor como aditivo en el asfalto
Vila, R. (author) / Mera, W. (author) / Jaramillo, J. (author)
2021-08-31
Revista Ingeniería de Construcción; Vol. 36 No. 2 (2021); 222-232 ; Revista Ingeniería de Construcción; Vol. 36 Núm. 2 (2021); 222-232 ; 0718-5073
Article (Journal)
Electronic Resource
English , Spanish
Asphalt , asphalt mix , rejuvenating , aging , NAT , Asfalto , mezcla asfáltica , rejuvenecedores , envejecimiento
DDC:
624
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