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Rheological properties of aged bitumen rejuvenated by polymer modified bio-derived rejuvenator
https://orcid.org/0000-0001-8407-8427
Highlights A polymer modified bio-derived rejuvenator (PMBR) was prepared. PMBR has satisfactory ability to rejuvenate the anti-cracking and anti-fatigue performance of aged bitumen. PMBR contains no severe side-effects on the high temperature performance of rejuvenated bitumen. PMBR renders better elastic response to aged bitumen. The polymer and crosslinking agent replenished by PMBR can react with the initially destroyed SBS segment in aged SBS modified bitumen. Then the network structure can be restored.
Abstract In this paper, a polymer modified bio-derived rejuvenator (PMBR) consisting of bio-oil, polymer modifier, and other additives (plasticizer, cross-linking agent) was investigated. The regeneration performance of PMBR on aged base and SBS modified bitumen was compared with that of commercial rejuvenator (CR) and bio-based rejuvenator (BR). The anti-cracking, anti-fatigue, anti-rutting and anti-moisture performance of aged base and SBS modified bitumen rejuvenated by CR, BR, as well as PMBR were evaluated via Dynamic Shear Rheometer (DSR) tests. The morphology, as well as the change of molecular functional groups of aged base and SBS modified bitumen rejuvenated by PMBR were studied by Fluorescence Microscopy (FM) and Fourier Transform Infrared Spectrum (FTIR). Glover-Rowe diagram results manifest that PMBR could restore the anti-cracking performance of aged bitumen to the level of virgin binder. Black diagram results show that PMBR rendered satisfactory elastic performance. Moreover, it is obtained from Linear Amplitude Sweep (LAS) results that PMBR performed better than conventional rejuvenators in reducing the damage rate and increasing the of aged bitumen. Additionally, Multiple Stress Creep Recovery (MSCR) results reveal that PMBR contained no severe side-effects on the high temperature performance, and rendered better elastic recovery to aged bitumen. The Shear Test results show that PMBR rejuvenated bitumen contained better anti-moisture ability as well as better network structure strength among all rejuvenated bitumen. Finally, the reaction between PMBR and aged SBS modified bitumen and the restoration of network structure was revealed via analyzing the morphology studied by the FM test, and characterizing the the C─S stretching vibrations and ─CH═CH─ vibrations in polybutadiene block obtained from the FTIR test. It is verified that the polymer and crosslinking agent replenished by PMBR reacted with the originally destroyed SBS segment in aged SBS modified bitumen. Then the network structure was restored, which could explain the rheological properties of aged bitumen rejuvenated by PMBR.
Rheological properties of aged bitumen rejuvenated by polymer modified bio-derived rejuvenator
https://orcid.org/0000-0001-8407-8427
Highlights A polymer modified bio-derived rejuvenator (PMBR) was prepared. PMBR has satisfactory ability to rejuvenate the anti-cracking and anti-fatigue performance of aged bitumen. PMBR contains no severe side-effects on the high temperature performance of rejuvenated bitumen. PMBR renders better elastic response to aged bitumen. The polymer and crosslinking agent replenished by PMBR can react with the initially destroyed SBS segment in aged SBS modified bitumen. Then the network structure can be restored.
Abstract In this paper, a polymer modified bio-derived rejuvenator (PMBR) consisting of bio-oil, polymer modifier, and other additives (plasticizer, cross-linking agent) was investigated. The regeneration performance of PMBR on aged base and SBS modified bitumen was compared with that of commercial rejuvenator (CR) and bio-based rejuvenator (BR). The anti-cracking, anti-fatigue, anti-rutting and anti-moisture performance of aged base and SBS modified bitumen rejuvenated by CR, BR, as well as PMBR were evaluated via Dynamic Shear Rheometer (DSR) tests. The morphology, as well as the change of molecular functional groups of aged base and SBS modified bitumen rejuvenated by PMBR were studied by Fluorescence Microscopy (FM) and Fourier Transform Infrared Spectrum (FTIR). Glover-Rowe diagram results manifest that PMBR could restore the anti-cracking performance of aged bitumen to the level of virgin binder. Black diagram results show that PMBR rendered satisfactory elastic performance. Moreover, it is obtained from Linear Amplitude Sweep (LAS) results that PMBR performed better than conventional rejuvenators in reducing the damage rate and increasing the of aged bitumen. Additionally, Multiple Stress Creep Recovery (MSCR) results reveal that PMBR contained no severe side-effects on the high temperature performance, and rendered better elastic recovery to aged bitumen. The Shear Test results show that PMBR rejuvenated bitumen contained better anti-moisture ability as well as better network structure strength among all rejuvenated bitumen. Finally, the reaction between PMBR and aged SBS modified bitumen and the restoration of network structure was revealed via analyzing the morphology studied by the FM test, and characterizing the the C─S stretching vibrations and ─CH═CH─ vibrations in polybutadiene block obtained from the FTIR test. It is verified that the polymer and crosslinking agent replenished by PMBR reacted with the originally destroyed SBS segment in aged SBS modified bitumen. Then the network structure was restored, which could explain the rheological properties of aged bitumen rejuvenated by PMBR.
Rheological properties of aged bitumen rejuvenated by polymer modified bio-derived rejuvenator
https://orcid.org/0000-0001-8407-8427
Highlights A polymer modified bio-derived rejuvenator (PMBR) was prepared. PMBR has satisfactory ability to rejuvenate the anti-cracking and anti-fatigue performance of aged bitumen. PMBR contains no severe side-effects on the high temperature performance of rejuvenated bitumen. PMBR renders better elastic response to aged bitumen. The polymer and crosslinking agent replenished by PMBR can react with the initially destroyed SBS segment in aged SBS modified bitumen. Then the network structure can be restored.
Abstract In this paper, a polymer modified bio-derived rejuvenator (PMBR) consisting of bio-oil, polymer modifier, and other additives (plasticizer, cross-linking agent) was investigated. The regeneration performance of PMBR on aged base and SBS modified bitumen was compared with that of commercial rejuvenator (CR) and bio-based rejuvenator (BR). The anti-cracking, anti-fatigue, anti-rutting and anti-moisture performance of aged base and SBS modified bitumen rejuvenated by CR, BR, as well as PMBR were evaluated via Dynamic Shear Rheometer (DSR) tests. The morphology, as well as the change of molecular functional groups of aged base and SBS modified bitumen rejuvenated by PMBR were studied by Fluorescence Microscopy (FM) and Fourier Transform Infrared Spectrum (FTIR). Glover-Rowe diagram results manifest that PMBR could restore the anti-cracking performance of aged bitumen to the level of virgin binder. Black diagram results show that PMBR rendered satisfactory elastic performance. Moreover, it is obtained from Linear Amplitude Sweep (LAS) results that PMBR performed better than conventional rejuvenators in reducing the damage rate and increasing the of aged bitumen. Additionally, Multiple Stress Creep Recovery (MSCR) results reveal that PMBR contained no severe side-effects on the high temperature performance, and rendered better elastic recovery to aged bitumen. The Shear Test results show that PMBR rejuvenated bitumen contained better anti-moisture ability as well as better network structure strength among all rejuvenated bitumen. Finally, the reaction between PMBR and aged SBS modified bitumen and the restoration of network structure was revealed via analyzing the morphology studied by the FM test, and characterizing the the C─S stretching vibrations and ─CH═CH─ vibrations in polybutadiene block obtained from the FTIR test. It is verified that the polymer and crosslinking agent replenished by PMBR reacted with the originally destroyed SBS segment in aged SBS modified bitumen. Then the network structure was restored, which could explain the rheological properties of aged bitumen rejuvenated by PMBR.
Rheological properties of aged bitumen rejuvenated by polymer modified bio-derived rejuvenator
Wang, Tianling (Autor:in) / Xu, Gang (Autor:in) / Shi, Chenguang (Autor:in) / Xu, Xinquan (Autor:in) / Yu, Yunhong (Autor:in) / Gong, Minghui (Autor:in) / Yang, Jun (Autor:in)
04.04.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Modelling rheological characteristics of rejuvenated aged bitumen
| Taylor & Francis Verlag | 2022