A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modern two-component modifiers inhibiting the aging process of road bitumen
https://orcid.org/0000-0002-9437-9757
Graphical abstract Display Omitted
Highlights The polymer composite chemical structure affects the aging inhibition efficiency. The presence of NH2 groups is crucial in inhibiting the bitumen aging process. Chitosan-based composites reduce the oxidation reaction of bitumen components.
Abstract The bitumen physicochemical properties of are constantly changing during both the production of asphalt mixtures and the service of road pavements. These changes involve bitumen hardening which consequently cause formation of defects and cracks in road pavements. Therefore, in recent years, prolonging road pavement life by inhibiting the bitumen aging process is a key trend in road engineering, bringing many economic, environmental and social benefits. In line with these trends, the main objective of this research was inhibition of short-term bitumen aging by two-component chitosan-based polymer composites containing ligands with different chemical structures, i.e. polyaniline, methacrylamide and 2-acrylamido-2-methylpropanesulfonic acid. This paper presents their effect on the TFOT aging process, as well as physicochemical and structural changes. Studies show that the strongest anti-aging properties are demonstrated by the chitosan:polyaniline composite. Its use at 2 % w/w allows it to maintain 90 % of the primary penetration value, increase the softening point by only 2°C and increase dynamic viscosity by 17% in comparison to non-aged modified bitumen. In addition, the use of the composite makes it possible to reduce the degree of bitumen components oxidation, which is seen from the reduction of carbonyl and sulfoxide indices by more than 33 % and 47 %, respectively.
Modern two-component modifiers inhibiting the aging process of road bitumen
https://orcid.org/0000-0002-9437-9757
Graphical abstract Display Omitted
Highlights The polymer composite chemical structure affects the aging inhibition efficiency. The presence of NH2 groups is crucial in inhibiting the bitumen aging process. Chitosan-based composites reduce the oxidation reaction of bitumen components.
Abstract The bitumen physicochemical properties of are constantly changing during both the production of asphalt mixtures and the service of road pavements. These changes involve bitumen hardening which consequently cause formation of defects and cracks in road pavements. Therefore, in recent years, prolonging road pavement life by inhibiting the bitumen aging process is a key trend in road engineering, bringing many economic, environmental and social benefits. In line with these trends, the main objective of this research was inhibition of short-term bitumen aging by two-component chitosan-based polymer composites containing ligands with different chemical structures, i.e. polyaniline, methacrylamide and 2-acrylamido-2-methylpropanesulfonic acid. This paper presents their effect on the TFOT aging process, as well as physicochemical and structural changes. Studies show that the strongest anti-aging properties are demonstrated by the chitosan:polyaniline composite. Its use at 2 % w/w allows it to maintain 90 % of the primary penetration value, increase the softening point by only 2°C and increase dynamic viscosity by 17% in comparison to non-aged modified bitumen. In addition, the use of the composite makes it possible to reduce the degree of bitumen components oxidation, which is seen from the reduction of carbonyl and sulfoxide indices by more than 33 % and 47 %, respectively.
Modern two-component modifiers inhibiting the aging process of road bitumen
https://orcid.org/0000-0002-9437-9757
Graphical abstract Display Omitted
Highlights The polymer composite chemical structure affects the aging inhibition efficiency. The presence of NH2 groups is crucial in inhibiting the bitumen aging process. Chitosan-based composites reduce the oxidation reaction of bitumen components.
Abstract The bitumen physicochemical properties of are constantly changing during both the production of asphalt mixtures and the service of road pavements. These changes involve bitumen hardening which consequently cause formation of defects and cracks in road pavements. Therefore, in recent years, prolonging road pavement life by inhibiting the bitumen aging process is a key trend in road engineering, bringing many economic, environmental and social benefits. In line with these trends, the main objective of this research was inhibition of short-term bitumen aging by two-component chitosan-based polymer composites containing ligands with different chemical structures, i.e. polyaniline, methacrylamide and 2-acrylamido-2-methylpropanesulfonic acid. This paper presents their effect on the TFOT aging process, as well as physicochemical and structural changes. Studies show that the strongest anti-aging properties are demonstrated by the chitosan:polyaniline composite. Its use at 2 % w/w allows it to maintain 90 % of the primary penetration value, increase the softening point by only 2°C and increase dynamic viscosity by 17% in comparison to non-aged modified bitumen. In addition, the use of the composite makes it possible to reduce the degree of bitumen components oxidation, which is seen from the reduction of carbonyl and sulfoxide indices by more than 33 % and 47 %, respectively.
Modern two-component modifiers inhibiting the aging process of road bitumen
Malinowski, Szymon (author) / Woszuk, Agnieszka (author) / Franus, Wojciech (author)
2023-10-15
Article (Journal)
Electronic Resource
English
short-term bitumen aging , polymer composite , FTIR , VAI , SPI , PRR , NMR , AFM
The properties of bitumen with different modifiers after a short-term aging process
| DOAJ | 2014
Recycled Polymers for Use as Bitumen Modifiers
| Online Contents | 2001
Recycled Polymers for Use as Bitumen Modifiers
| British Library Online Contents | 2001
High Strength Bitumen Modifiers for Indian Highways
| British Library Conference Proceedings | 2000