A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Study on Aging Resistance of Bitumen Rejuvenated with Various Rejuvenators for Hot Recycling
In this study, oxidized bitumen blend was rejuvenated with five rejuvenators, namely Tall oils, two fatty acids (FA 1 and FA 2), two paraffinic oil (PO 1 and PO 2). A relationship was developed between the viscosity of aged bitumen and target rejuvenator content for all the rejuvenator types considered in the study. The aging of bitumen was simulated by conditioning the VG40 bitumen in Rolling Thin Film Oven (RTFO) and Pressure Aging Vessel (PAV) for different conditioning periods. The relationship between viscosity of artificially aged bitumen and the target rejuvenator content was verified using recovered bitumen from Reclaimed Asphalt Pavement (RAP) material from two different sources. An error percent of 1–13% was observed in achieving target viscosity. To study the effectiveness of the rejuvenator w.r.t to the aging of rejuvenated bitumen blends, target rejuvenator content derived from the developed relationships was added to RAP bitumen blend, and the resulting bitumen blends were subjected to short term and long term aging. The aging indices were then calculated as the ratio of complex modulus at aged state to unaged complex modulus, which indicates the aging susceptibility of rejuvenated blends. The aged bitumen blended with Paraffin Oils category rejuvenator showed the least resistance to aging.
Study on Aging Resistance of Bitumen Rejuvenated with Various Rejuvenators for Hot Recycling
In this study, oxidized bitumen blend was rejuvenated with five rejuvenators, namely Tall oils, two fatty acids (FA 1 and FA 2), two paraffinic oil (PO 1 and PO 2). A relationship was developed between the viscosity of aged bitumen and target rejuvenator content for all the rejuvenator types considered in the study. The aging of bitumen was simulated by conditioning the VG40 bitumen in Rolling Thin Film Oven (RTFO) and Pressure Aging Vessel (PAV) for different conditioning periods. The relationship between viscosity of artificially aged bitumen and the target rejuvenator content was verified using recovered bitumen from Reclaimed Asphalt Pavement (RAP) material from two different sources. An error percent of 1–13% was observed in achieving target viscosity. To study the effectiveness of the rejuvenator w.r.t to the aging of rejuvenated bitumen blends, target rejuvenator content derived from the developed relationships was added to RAP bitumen blend, and the resulting bitumen blends were subjected to short term and long term aging. The aging indices were then calculated as the ratio of complex modulus at aged state to unaged complex modulus, which indicates the aging susceptibility of rejuvenated blends. The aged bitumen blended with Paraffin Oils category rejuvenator showed the least resistance to aging.
Study on Aging Resistance of Bitumen Rejuvenated with Various Rejuvenators for Hot Recycling
RILEM Bookseries
Di Benedetto, Hervé (editor) / Baaj, Hassan (editor) / Chailleux, Emmanuel (editor) / Tebaldi, Gabriele (editor) / Sauzéat, Cédric (editor) / Mangiafico, Salvatore (editor) / Kumara, Chetan (author) / Guduru, Gurunath (author) / Gottumukkala, Bharath (author) / Kuna, Kranthi (author)
RILEM International Symposium on Bituminous Materials ; 2020 ; Lyon, France
Proceedings of the RILEM International Symposium on Bituminous Materials ; Chapter: 215 ; 1697-1704
RILEM Bookseries ; 27
2021-09-26
8 pages
Article/Chapter (Book)
Electronic Resource
English
Impact of rejuvenators on aging properties of bitumen
| British Library Online Contents | 2015
Impact of rejuvenators on aging properties of bitumen
| Online Contents | 2015
Impact of rejuvenators on aging properties of bitumen
| Elsevier | 2015