The effect of oil sands de-oiled asphalt on rheological properties, compatibility and stability of asphalt binder

Pei, Xiaoguang; Fan, Weiyu; Liu, Yanjun; Qian, Chengduo; Wang, Yanfa; Jiang, Youshan; Chen, Song; Wang, Zhichao; Han, Ling

doi:10.1016/j.conbuildmat.2020.120594

Cited by 12 publications

(6 citation statements)

References 56 publications

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“…The Han curve, designed to forecast the compatibility of mixtures with distinct chemical structures and phases, uses viscoelastic parameters from oscillatory shearing flow states. , A Han curve positioned toward the lower right of the reference line suggests a predominant viscous component . The following abbreviation is used here: “RA” followed by the name of a rejuvenator indicates the rejuvenated asphalt binder produced by mixing P20 with the named rejuvenator.…”

Section: Resultsmentioning

confidence: 99%

Investigating Asphalt Rejuvenators from Biowastes Based on Their Wetting, Diffusion, and Compatibility

Zhou,

Liu,

Fini

et al. 2024

ACS Sustainable Chem. Eng.

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Achieving NetZero carbon emissions necessitates innovative solutions for revitalization and recycling of asphalt pavements. This study focuses on the efficacy of biobased rejuvenators in enhancing the properties of aged asphalt binder, emphasizing their diffusion, wetting, and compatibility. We discovered that low-viscosity rejuvenators, specifically palm oil and waste cooking oil, significantly improve wetting, with rates of 79.2 and 317.2 mm/s, respectively. The diffusion rate was found to correlate with chemical composition and viscosity, with palm oil leading, followed by soybean and castor oils. Compatibility assessment, based on the thermodynamic free energy of mixing, Han curve analysis, and Cole−Cole plots, revealed that palm oil effectively restored the molecular and colloidal structures of aged asphalt. These findings underscore the significance of rejuvenator compatibility for optimal performance and sustainability, contributing to the advancement of NetZero carbon road infrastructure.

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Section: Resultsmentioning

confidence: 99%

Investigating Asphalt Rejuvenators from Biowastes Based on Their Wetting, Diffusion, and Compatibility

Zhou,

Liu,

Fini

et al. 2024

ACS Sustainable Chem. Eng.

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“…In view of the accuracy, the rheological method has a unique advantage in determining compatibility because it is sensitive to the differences between polymers and asphalt binder. At present, rheological methods such as master curves, black curves, Ham diagrams, and Cole–Cole diagrams are employed to characterize the compatibility of modified binders [ 54 , 55 , 58 , 59 ]. Among the above approaches, the Cole–Cole diagrams have proven to be the most effective method for determining compatibility.…”

Section: Resultsmentioning

confidence: 99%

Effects of Amorphous Poly Alpha Olefin (APAO) and Polyphosphoric Acid (PPA) on the Rheological Properties, Compatibility and Stability of Asphalt Binder

Pei

Fan

2021

Materials

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High production costs and poor storage stability have become important constraints in the manufacture of modified asphalt binder. To simplify the production process and reduce the production cost, amorphous poly alpha olefin (APAO) and polyphosphoric acid (PPA) were applied to prepare highly stable modified asphalt binder. The influence of APAO/PPA on the temperature sensitivity, rheological property, storage stability, compatibility and microstructure of neat binder were studied by rotational viscosity (RV), dynamic shear rheometer (DSR), bending beam rheometer (BBR) and Fourier transform infrared (FTIR) spectroscopy. The results show that the incorporation of APAO/PPA reduced the temperature sensitivity of neat binder. The combined effect of APAO/PPA contributed to the improvement in deformation resistance, which was evidenced by the increase in failure temperature and percent recovery. However, the compound modification of APAO/PPA decreased the binder’s low-temperature performance. APAO strengthened the fatigue resistance of the binder, while PPA reduced the anti-fatigue performance. Composite modified asphalt binder with superior storage stability could be prepared, which was confirmed by the desired Cole–Cole plots and fluorescence imaging. Furthermore, chemical and physical reactions occurred during the APAO/PPA modification process. Overall, 2 wt.% (weight percentage) APAO and 1.5 wt.% PPA are recommended for the production of modified asphalt binder with remarkable rheological performance and storage stability.

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“…The addition of OSDOA enhances both the G′ and G″, and the increment of G′ is greater than that of G″ with the increasing OSDOA content. The result suggests that OSDOA is beneficial to the enhancement of rheological properties, especially for the elastic behavior [ 38 ]. Moreover, the viscoelastic properties of OSDOA/SBS-modified asphalts are further strengthened by PPA.…”

Section: Resultsmentioning

confidence: 99%

“…The neat asphalt, K0 and K5 are too flexible to be detected at −6 °C. It is clear that as the OSDOA content increases, the stiffness value rises sharply and the m-value declines rapidly [ 38 ]. The results reveal that OSDOA has a detrimental effect on the low-temperature properties.…”

Section: Resultsmentioning

confidence: 99%

“…As observed, after SBS is added, the creep stiffness of neat asphalt decreases and the m-value increases, figuring that SBS makes the asphalt more flexible at low temperatures. The neat asphalt, K0 and K5 are too flexible to be detected at −6 • C. It is clear that as the OSDOA content increases, the stiffness value rises sharply and the m-value declines rapidly [38]. The results reveal that OSDOA has a detrimental effect on the low-temperature properties.…”

Section: Low-temperature Creep Behaviormentioning

confidence: 91%

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Influence of Compound Modification of Oil Sands De-Oiled Asphalt and Polyphosphoric Acid on High- and Low-Temperature Performance of Styrene-Butadiene-Styrene-Modified Asphalt

Pei

Fan

2021

Materials

Self Cite

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Oil sands de-oiled asphalt (OSDOA) has become a bottleneck for refineries due to its enormous production and huge landfill costs. Applying OSDOA as a modifier is an effective way to reduce environmental pollution and disposal cost. In this study, the influences of OSDOA and polyphosphoric acid (PPA) compound modification on styrene-butadiene-styrene (SBS)-modified binder were investigated. The high-temperature rutting resistance, low-temperature anti-crack performance and fatigue resistance were obtained by dynamic shear rheometer (DSR) and bending beam rheometer (BBR) test. Storage stability and microstructure were also investigated by storage test and Fourier-transform infrared (FTIR) spectroscopy. The results demonstrated that the compound modification of OSDOA/PPA dramatically enhanced the deformation resistance of SBS-modified binder and reduced its low-temperature cracking resistance. The anti-fatigue performance was also decreased. Moreover, the combined effect of OSDOA and PPA could produce composite modified asphalt with excellent storage stability, which was verified by desirable fluorescence images. Furthermore, both physical and chemical interactions coexisted during the OSDOA/PPA compound modification process. Consequently, the optimal doses of OSDOA and PPA were determined to be 10 wt% and 1.0 wt%, considering of the balance between high- and low-temperature characteristics and storage stability of composite modified asphalt.

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The effect of oil sands de-oiled asphalt on rheological properties, compatibility and stability of asphalt binder

Cited by 12 publications

References 56 publications

Investigating Asphalt Rejuvenators from Biowastes Based on Their Wetting, Diffusion, and Compatibility

Investigating Asphalt Rejuvenators from Biowastes Based on Their Wetting, Diffusion, and Compatibility

Effects of Amorphous Poly Alpha Olefin (APAO) and Polyphosphoric Acid (PPA) on the Rheological Properties, Compatibility and Stability of Asphalt Binder

Influence of Compound Modification of Oil Sands De-Oiled Asphalt and Polyphosphoric Acid on High- and Low-Temperature Performance of Styrene-Butadiene-Styrene-Modified Asphalt

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