Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Laboratory evaluation of rejuvenation effect of reactive rejuvenator on aged SBS modified bitumen
https://orcid.org/0000-0002-8557-055X
Abstract A reactive rejuvenator (RR) containing epoxy functional groups and a conventional rejuvenator (CR) were used to regenerate the aged SBS modified bitumen (SBSMB). Effects of two kinds of rejuvenators on physical properties, rheological properties, chemical structure and phase morphology of the aged SBSMB were investigated. Compared with CR, RR performs better in recovering the physical and rheological properties of aged SBSMB, especially for ductility, 9 wt% RR could recover the ductility of aged SBSMB to a level which is close to virgin SBSMB, and the RR shows more effective regeneration effect in the repeated aging and regeneration. FTIR and phase morphology analysis indicates that epoxy functional groups in RR could react with carboxylic groups formed in the degradation of SBS and generate carboxylic ester group, which could bond those oxygenated chain fragments of SBS, enhance the interaction among the SBS chains and partially offset the degradation of SBS chains and the swelling and dilution effects of oily compositions on SBS, resulting in good restoration of the network structure of SBS and the ductility of SBSMB.
Laboratory evaluation of rejuvenation effect of reactive rejuvenator on aged SBS modified bitumen
https://orcid.org/0000-0002-8557-055X
Abstract A reactive rejuvenator (RR) containing epoxy functional groups and a conventional rejuvenator (CR) were used to regenerate the aged SBS modified bitumen (SBSMB). Effects of two kinds of rejuvenators on physical properties, rheological properties, chemical structure and phase morphology of the aged SBSMB were investigated. Compared with CR, RR performs better in recovering the physical and rheological properties of aged SBSMB, especially for ductility, 9 wt% RR could recover the ductility of aged SBSMB to a level which is close to virgin SBSMB, and the RR shows more effective regeneration effect in the repeated aging and regeneration. FTIR and phase morphology analysis indicates that epoxy functional groups in RR could react with carboxylic groups formed in the degradation of SBS and generate carboxylic ester group, which could bond those oxygenated chain fragments of SBS, enhance the interaction among the SBS chains and partially offset the degradation of SBS chains and the swelling and dilution effects of oily compositions on SBS, resulting in good restoration of the network structure of SBS and the ductility of SBSMB.
Laboratory evaluation of rejuvenation effect of reactive rejuvenator on aged SBS modified bitumen
https://orcid.org/0000-0002-8557-055X
Abstract A reactive rejuvenator (RR) containing epoxy functional groups and a conventional rejuvenator (CR) were used to regenerate the aged SBS modified bitumen (SBSMB). Effects of two kinds of rejuvenators on physical properties, rheological properties, chemical structure and phase morphology of the aged SBSMB were investigated. Compared with CR, RR performs better in recovering the physical and rheological properties of aged SBSMB, especially for ductility, 9 wt% RR could recover the ductility of aged SBSMB to a level which is close to virgin SBSMB, and the RR shows more effective regeneration effect in the repeated aging and regeneration. FTIR and phase morphology analysis indicates that epoxy functional groups in RR could react with carboxylic groups formed in the degradation of SBS and generate carboxylic ester group, which could bond those oxygenated chain fragments of SBS, enhance the interaction among the SBS chains and partially offset the degradation of SBS chains and the swelling and dilution effects of oily compositions on SBS, resulting in good restoration of the network structure of SBS and the ductility of SBSMB.
Laboratory evaluation of rejuvenation effect of reactive rejuvenator on aged SBS modified bitumen
Xu, Song (Autor:in) / Yu, Jianying (Autor:in) / Hu, Changbin (Autor:in) / Qin, Defeng (Autor:in) / Xue, Lihui (Autor:in)
2017
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Laboratory evaluation of rejuvenation effect of reactive rejuvenator on aged SBS modified bitumen
| Springer Verlag | 2017
Laboratory evaluation of rejuvenation effect of reactive rejuvenator on aged SBS modified bitumen
| Springer Verlag | 2017
Laboratory evaluation of rejuvenation effect of reactive rejuvenator on aged SBS modified bitumen
| Online Contents | 2017
On the rejuvenator dosage optimization for aged SBS modified bitumen
| Elsevier | 2020