Study on UV aging resistance of nano-TiO2/montmorillonite/styrene-butadiene rubber composite modified asphalt based on rheological and microscopic properties

Liao, Meijie; Liu, Zhaohui; Gao, Yingli; Liu, Li; Xiang, Shuncheng

doi:10.1016/j.conbuildmat.2021.124108

Cited by 37 publications

(16 citation statements)

References 23 publications

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“…Compared with these two light sources, LED‐UV lamps have low heat, stable radiation energy, uniform irradiation, faster accelerated aging efficiency, low energy consumption, environmental protection, and long service life 38,39 . Some studies have adopted LED‐UV lamps as the light source for UV aging 40,41 . Recent studies by Hu and Li et al have suggested that the effects of UV light on asphalt aging may be more pronounced in the wavelength range around 360 nm 42,43 .…”

Section: Materials and Experimentalmentioning

confidence: 99%

“…38,39 Some studies have adopted LED-UV lamps as the light source for UV aging. 40,41 Recent studies by Hu and Li et al have suggested that the effects of UV light on asphalt aging may be more pronounced in the wavelength range around 360 nm. 42,43 Accordingly, LED-UV lamps with 365 nm central wavelength were used as the UV light source in this research.…”

Section: Specimen Preparation and Uvbased Aging Processmentioning

confidence: 99%

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Evaluation of properties and aging resistance of epoxy asphalt composite modified by ultraviolet absorber

Wang

Min

Wong

et al. 2023

J of Applied Polymer Sci

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This research investigated the effect of ultraviolet absorber (UV‐531) on the properties of epoxy asphalt (EA) binders. EA binders were modified by adding UV‐531 absorber at contents of 0, 0.3, 0.6, 0.9, and 1.2 wt%, and composites were then subjected to ultraviolet (UV)‐based aging, including UV, oxygen, and heat treatment. Laboratory tests were conducted to assess UV absorption, viscosity, mechanical parameters, contact angle, microstructure, and chemical functional groups of absorber‐modified EA composites before and after aging. The results showed that the addition of UV‐531 resulted in enhanced UV absorption capacity, lower initial viscosity, and longer allowable application time for EA composites. The UV‐531 absorber has good compatibility with EA binders and does not weaken the performance of EA binders. From anti‐aging perspective, UV‐531 absorber effectively delayed the degradation of the physical, mechanical, and chemical structures of EA composites. The breakage of alkyl and ester groups of EA composites containing absorber was significantly reduced under aging conditions. Overall, the presence of UV‐531 retarded severe performance deterioration in EA composite. Considering aging improvement and economic cost, it is recommended to use a content of 0.9 wt% UV‐531 absorber as an anti‐aging agent for EA composites.

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Section: Materials and Experimentalmentioning

confidence: 99%

Section: Specimen Preparation and Uvbased Aging Processmentioning

confidence: 99%

Evaluation of properties and aging resistance of epoxy asphalt composite modified by ultraviolet absorber

Wang

Min

Wong

et al. 2023

J of Applied Polymer Sci

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“…However, problems have gradually emerged with the increment in repealed loads and frequency, in which it lacks permanent deformation resistance and has seriously degrading anti-aging properties. Meanwhile, its poor storage stability seriously affects the use and development of SBRMA [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Effects of Polyphosphoric Acid (PPA) on the Anti-Ultraviolet Aging Properties of SBR-Modified Asphalt

Niu

Zhu

et al. 2023

Materials

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The ultraviolet (UV) aging of asphalt is an important factor affecting the long-term performance of asphalt pavement, especially in high altitude cold regions. The current studies have reported that styrene butadiene rubber-modified asphalt (SBRMA) has a good cracking resistance at low temperatures. In addition, polyphosphoric acid (PPA) is an effective modifier that can enhance the anti-UV aging properties of asphalt. However, the understanding of the improvement mechanism of PPA on the anti-aging of SBRMA remains unclear. Therefore, this study aimed to evaluate the effect of PPA on the UV aging resistance of SBRMA. The rheological properties of PEN90 asphalt(90#A), SBRMA, and PPA/SBR modified (PPA/SBR-MA) before and after UV aging were evaluated by dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The molecular weight and chemical structure of 90#A, SBRMA, and PPA/SBR-MA were determined by Fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC), and the interaction and modification mechanism of the modifiers were analyzed. The rheological analysis shows that the high and low temperature performances of SBRMA are improved by adding PPA, and PPA also significantly reduces the sensitivity of SBRMA to UV aging. The microscopic test results show that PPA has a complex chemical reaction with SBRMA, which results in changes in its molecular structure. This condition enhances SBRMA with a more stable dispersion system, inhibits the degradation of the polymer macromolecules of the SBR modifier, and slows down the aging process of base asphalt. In general, PPA can significantly improve the anti-UV aging performance of SBRMA. The Pearson correlations between the aging indexes of the macro and micro properties are also significant. In summary, PPA/SBRMA material is more suitable for high altitude cold regions than SBRMA, which provides a reference for selecting and designing asphalt pavement materials in high altitude cold regions.

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“…Liao et al used nano-TiO 2 and montmorillonite (MMT) for composite modification of butadiene–styrene-rubber (SBR)-modified asphalt binder and concluded that the effect of nano-TiO 2 and nano-MMT can delay the process of converting light components to asphaltenes during asphalt binder aging, reducing and almost stabilizing the CMI index of SBR-modified asphalt binder at about 2, decreasing the average stiffness modulus rate from 0.27 to 0.13, and dropping the carbonyl index from 5.16 to 0.28 [ 37 ].…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Asphalt Binder “Skincare”? Aging Evaluation of an Asphalt Binder Modified by Nano-TiO2

et al. 2022

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Aging by oxidation of asphalt roadway material promotes changes in its physical, chemical, and rheological properties, affecting its hardening and accelerating the degradation of its corresponding asphalt mixture. Titanium dioxide (TiO2) has been applied in engineering investigations to promote anti-aging and photocatalytic properties. In this study, a commercial binder was modified with nano-TiO2 (using contents of 0.1, 0.25, 0.5, 1, 2, 3, and 6%). It was evaluated by physicochemical and rheological tests (penetration, softening point, mass loss, dynamic viscosity, rheology, and Fourier transform infrared spectroscopy—FTIR) before and after aging by rolling thin-film oven test (RTFOT) and pressure aging vessel (PAV). The results indicated that incorporating nano-TiO2 mitigates binder aging, pointing out 0.25% as an optimum modification content for the investigated asphalt binder.

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Study on UV aging resistance of nano-TiO2/montmorillonite/styrene-butadiene rubber composite modified asphalt based on rheological and microscopic properties

Cited by 37 publications

References 23 publications

Evaluation of properties and aging resistance of epoxy asphalt composite modified by ultraviolet absorber

Evaluation of properties and aging resistance of epoxy asphalt composite modified by ultraviolet absorber

Evaluating the Effects of Polyphosphoric Acid (PPA) on the Anti-Ultraviolet Aging Properties of SBR-Modified Asphalt

Asphalt Binder “Skincare”? Aging Evaluation of an Asphalt Binder Modified by Nano-TiO2

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