Development of novel composite rejuvenators for efficient recycling of aged SBS modified bitumen

Han, Xiaobin; Mao, Sanpeng; Xu, Shi; Cao, Zhilong; Zeng, Shangheng; Yu, Jianying

doi:10.1016/j.fuel.2022.123715

Cited by 18 publications

(4 citation statements)

References 30 publications

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“…Compared with TDI and HDI, RCERs could more efficiently recover the cross-linking network structure of degraded SBS modifiers and thus better recover the physical properties including the resistance to low-temperature cracking and high-temperature rutting because of the long flexible chains in RCERs. Furthermore, Han et al . synthesized isocyanate terminated long chain active rejuvenators (ITLCARs) including TDI/HDI and HTPB and then combined ITLCARs and aromatic hydrocarbon oil to prepare novel composite rejuvenators (NCRs) to recover the performance of aged SBS modified bitumen, as presented in Figure b.…”

Section: Rejuvenation Of Aged Sbs Modified Bitumen By Repairing Degra...mentioning

confidence: 99%

“…Molecular structures of reactive rejuvenators: (a) RCERs, reproduced with permission from ref . Copyright 2021 American Chemical Society, and (b) ITLCARs, reproduced with permission from ref . Copyright 2022 Elsevier.…”

Section: Rejuvenation Of Aged Sbs Modified Bitumen By Repairing Degra...mentioning

confidence: 99%

“…Hence, the selection of molecular structures of reactive chemicals is the key to affect the performance of rejuvenated SBS modified bitumen. Furthermore, according to the research conducted by Han et al, − the new reactive chain extension rejuvenators synthesized from small molecule reactive chemicals is one of the effective means to enhance the effectiveness of reconstruction. Similarly, the addition of reactive chemicals with multiple molecular structures can also further enhance the performance through giving play to the characteristics of different reactive chemicals.…”

Section: Challenges and Perspectivesmentioning

confidence: 99%

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Minireview on the Rejuvenation of Aged Styrene–Butadiene–Styrene (SBS) Modified Bitumen: State-of-the-Art and Outlook

et al. 2023

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Styrene−butadiene−styrene (SBS) modified bitumen are generally used as binders in bituminous pavement because of the good performance. Under the influence of traffic, environment, and other factors, SBS modified bitumen would be aged, which mainly includes the aging of base bitumen and the degradation of SBS modifiers. With the view of resource recycling, aged SBS modified bitumen is usually rejuvenated to prepare recycled bituminous mixtures. The present paper reviews the stateof-the-art research on the rejuvenation of aged SBS modified bitumen. In detail, the rejuvenation paths of aged SBS modified bitumen are comprehensively introduced and discussed. According to the rejuvenation mechanism, the current rejuvenation paths mainly consist of only rejuvenation of aged base bitumen in modified bitumen and rejuvenation of aged base bitumen and degraded modifiers. On this basis, characteristics and challenges of different rejuvenation paths are discussed, and the corresponding recommendations are further listed for future exploration.

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Section: Rejuvenation Of Aged Sbs Modified Bitumen By Repairing Degra...mentioning

confidence: 99%

Section: Rejuvenation Of Aged Sbs Modified Bitumen By Repairing Degra...mentioning

confidence: 99%

Section: Challenges and Perspectivesmentioning

confidence: 99%

See 1 more Smart Citation

Minireview on the Rejuvenation of Aged Styrene–Butadiene–Styrene (SBS) Modified Bitumen: State-of-the-Art and Outlook

et al. 2023

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“…Also, high content SBS modified asphalt is popular to be used in open-graded friction course (OGFC) to construct permeable asphalt pavement since its high viscosity can provide extra strength [2,3]. Nevertheless, a number of researches have proved that SBS modified asphalt (SBSMA) is prone to oxidative aging, with rheological response greatly changed and SBS degradation [4,5]. Even, short-term aging could cause an unneglected impact on performance [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Oils on SBS Modified Asphalt: Rheological Characteristics and Oxidation Aging

Xu¹,

Yao²,

Zhang³

et al. 2023

Journal of Renewable Materials

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This study focuses on the effect of oils on rheology and oxidation aging of Styrene-Butadiene-Styrene modified asphalt (SBSMA) in the long term, after reducing one low-temperature Performance Grade (PG) of SBSMA by incorporating oils. Two oils, including corn-based bio-oil and re-refined engine oil bottom (REOB), were selected to enhance the low-temperature performance of SBSMA. All samples were subjected to Rolling Thin Film Oven (RTFO) aging and 20-h as well as 40-h Pressure Aging Vessel (PAV20 and PAV40) aging, prior to multiple stress creep recovery (MSCR), frequency sweep and Flourier transform infrared spectroscopy (FTIR) scanning. A good high-temperature performance of oil/SBS modified asphalt blends was reflected in MSCR and PG results, meanwhile non-recoverable creep compliance (Jnr) and recovery (R) were found to share a highly correlated relationship during aging progress. In addition, Glover-Rowe (G-R) parameter and phase angle master curves suggest that the improvement of cracking property mainly came from the softening effect of oils. Adding oils into SBSMA was observed to increase oxidation kinetics, but the blends with oils still exhibited better anti-oxidation aging than the base binder, mainly due to the SBS addition. Bio-oil exhibited an effect of relieving age hardening susceptibility of SBSMA.

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Influence of novel long-chain active composite rejuvenators on interfacial adhesion between aged SBS modified asphalt and aggregate

Han

Mao

Zeng

et al. 2022

Construction and Building Materials

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Development of novel composite rejuvenators for efficient recycling of aged SBS modified bitumen

Cited by 18 publications

References 30 publications

Minireview on the Rejuvenation of Aged Styrene–Butadiene–Styrene (SBS) Modified Bitumen: State-of-the-Art and Outlook

Minireview on the Rejuvenation of Aged Styrene–Butadiene–Styrene (SBS) Modified Bitumen: State-of-the-Art and Outlook

Effect of Oils on SBS Modified Asphalt: Rheological Characteristics and Oxidation Aging

Influence of novel long-chain active composite rejuvenators on interfacial adhesion between aged SBS modified asphalt and aggregate

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