Effect of Freeze–Thaw cycles on the pavement performance of SBS modified and composite crumb rubber modified asphalt mixtures

Cui, Shichao; Guo, Naisheng; Wang, Lan; You, Zhanping; Tan, Yiqiu; Guo, Zhixiang; Luo, Xuedong; Chen, Zheng

doi:10.1016/j.conbuildmat.2022.127799

Cited by 17 publications

(4 citation statements)

References 27 publications

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“…Gan et al found that, after adding a commercial rejuvenator, the viscosity, soften point, and penetration of aged SBS modified bitumen were effectively improved, while the ductility was not significantly improved and could not meet the technical requirement of virgin SBS modified bitumen. The research conducted by Yao et al and Cui et al also obtained similar conclusions after adding commercial rejuvenators named as OP1100 and XT-1, respectively. In contrast, according to the research conducted by Bai, the low-temperature performance of aged SBS modified bitumen measured by bending beam rheometer (BBR) tests could be improved when blended with commercial rejuvenators R1 and R2, and the degree of improvement depended on the type and amount of rejuvenators.…”

Section: Only Rejuvenation Of Aged Base Bitumen In Modified Bitumensupporting

confidence: 56%

“…In order to clarify the specific rejuvenation mechanism of commercial rejuvenators, with the help of atomic force microscopy (AFM), Cui et al observed that the addition of commercial rejuvenators named as XT-1 could decrease the DMT modulus of aged SBS modified bitumen and increase its adhesion at the nanoscale. Besides, based on the infrared spectra captured by Fourier-transform infrared spectroscopy (FT-IR), it could be deduced that no chemical reaction between aged SBS modified bitumen and commercial rejuvenators occurred . Moreover, Li et al observed that the carbonyl content produced by aging decreased significantly after adding commercial rejuvenators named as CYCLOGEN L. In parallel, the asphaltene content decreased, while the maltene content increased.…”

Section: Only Rejuvenation Of Aged Base Bitumen In Modified Bitumenmentioning

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: Only Rejuvenation Of Aged Base Bitumen In Modified Bitumensupporting

confidence: 56%

Section: Only Rejuvenation Of Aged Base Bitumen In Modified Bitumenmentioning

confidence: 99%

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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“…This is because the addition of 0.3% asphalt increases the asphalt content in the asphalt mixture and also promotes the integration of the new asphalt with the old asphalt, which ultimately increases the bonding between the asphalt mixtures [49,51,52]. On the other hand, the high elasticity of CCRMA leads to its ability to withstand greater damage loads [53]. At the same time, CCRMA can delay the extension of cracks, resulting in a significant increase in both peak force load and fracture energy of CRMA, which ultimately improves the low-temperature crack resistance of the RAM [54,55].…”

Section: Materials Reliability Intervals Reliability (%)mentioning

confidence: 99%

Effect of Fractionation Process and Addition of Composite Crumb Rubber-Modified Asphalt on Road Performance Variability of Recycled Asphalt Mixtures with High Reclaimed Asphalt Pavement (RAP) Content

Wei,

Ji,

Song

et al. 2023

Buildings

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The application of reclaimed asphalt pavement (RAP) can help reduce resource waste and environmental pollution in road construction. However, so far, only a small percentage of RAP materials can be used in road construction. The key obstacles to the application of a recycled asphalt mixture (RAM) with high RAP content are the variability of RAP materials and the difficulty of fully rejuvenating aged asphalt. However, there is still a lack of research on the effect of the variability of RAP materials and recycled asphalt on the quality control of a RAM. Therefore, this study investigates the effects of sieve pretreatment of RAP material using 4.75 mm sieve mesh and the use of composite crumb rubber-modified asphalt (CCRMA) to reclaim aged asphalt on the road performance and frame variability of reclaimed asphalt mixtures. Therefore, this study investigates the effects of the fractionation process of RAP material using 4.75 mm sieve mesh and the use of CCRMA to reclaim aged asphalt on the road performance of a RAM. The results show that the fractionation process can effectively reduce the mitigation of RAP agglomeration and reduce the variability of gradation, which in turn reduces the variability of road performance. The incorporation of CCRMA can effectively improve the high-temperature stability performance and low-temperature cracking resistance. The dynamic stability and the fracture energy of the CRAM (RAM prepared using CCRMA) were four and one and a half times as large as that of the NAM (RAM prepared using base asphalt), respectively. The fractionation process of RAP material and the utilization of CCRMA could help reduce the variability of the RAM while improving the road performance of the RAM.

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“…Asphalt rubber mixtures have been used successfully in various applications, and mechanical resistance improvements concerning permanent deformation, fatigue, and reflective and thermal cracking are described in the literature [ 24 , 25 , 26 , 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Contribution of Asphalt Rubber Mixtures to Sustainable Pavements by Reducing Pavement Thickness

et al. 2022

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Asphalt rubber mixtures have been used as pavement surface layers due to their ability to prevent early degradation, and are considered a sustainable option. This study performed analysis comparing the fatigue resistance of asphalt rubber mixtures of different combinations of asphalt bases, crumb rubber, and gradation, in order to estimate the performance of asphalt rubber mixtures as pavement surface layers. The methodology was developed in a laboratory and involved asphalt rubber production by continuous and terminal blend systems with different crumb rubbers and asphalt base types. Asphalt rubber mixtures with varying gradations and an unmodified asphalt mixture as a reference were produced. The mechanical behavior as a dynamic modulus and with respect to fatigue resistance was evaluated using a four-point bending test. In order to verify each of the asphalt rubber mixtures’ contribution as a surface layer, pavement structures were designed and their lifespans were compared. The findings showed that all asphalt rubber mixtures presented higher fatigue resistance than the reference. For pavement design, in comparison with the reference mixture, the thickness of the surface layer could be reduced by at least 50% while achieving the same life, proving its successful performance. This study demonstrated the effective contribution of crumb rubber from scrap tires as an asphalt modifier for producing sustainable mixtures with adequate fatigue performance.

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Effect of Freeze–Thaw cycles on the pavement performance of SBS modified and composite crumb rubber modified asphalt mixtures

Cited by 17 publications

References 27 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 Fractionation Process and Addition of Composite Crumb Rubber-Modified Asphalt on Road Performance Variability of Recycled Asphalt Mixtures with High Reclaimed Asphalt Pavement (RAP) Content

Contribution of Asphalt Rubber Mixtures to Sustainable Pavements by Reducing Pavement Thickness

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