Exploration for UV Aging Characteristics of Asphalt Binders based on Response Surface Methodology: Insights from the UV Aging Influencing Factors and Their Interactions

Liu, Hengbin; Zhang, Zhengqi; Tian, Zhongnan; Lu, Chao

doi:10.1016/j.conbuildmat.2022.128460

Cited by 20 publications

(4 citation statements)

References 33 publications

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“…(1) three-point bending test was performed on asphalt specimens at −10 °C with a loading speed of 0.5 mm/min to test their initial flexural strength and generate cracks to heal. (2) The fractured samples were placed into the steel mold and different cycles of cyclic compression loading (0, 5000, 10,000, 15,000 and 20,000) of 2 Hz were applied on the fractured beams to simulate the vehicle tire loading on cracked beams and to force the capsules release the oil under cyclic compression pressure. The loading stress was 0.6 MPa, 1.0 MPa and 1.4 MPa, respectively.…”

Section: Self-healing Property Evaluationmentioning

confidence: 99%

“…Asphalt concrete has become the dominant surface paving material on high-grade roads due to its superior pavement performance. Nevertheless, ageing and cracking will inevitably occur on asphalt pavement due to low temperature [1], UV exposure [2], moisture weather [3] and traffic loading [4] after serving a period of time. Micro cracks will fatally deteriorate into macro cracks without proper maintenance applied on asphalt pavement, thus not only shortening the service period of pavement, but also affecting the integrity of pavement structure and the vehicle safety.…”

Section: Introductionmentioning

confidence: 99%

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Self-Healing Properties of Asphalt Concrete with Calcium Alginate Capsules Containing Different Healing Agents

Wang

Miao

et al. 2022

Materials

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Calcium alginate capsules encapsulating rejuvenator are a promising self-healing technology for asphalt pavement, but the effects of different healing agents on the self-healing performance of asphalt concrete has not been considered. In view of this, this paper aimed at exploring the effects of calcium alginate capsules containing different healing agents on the self-healing properties of asphalt concrete. Three types of capsules with sunflower oil, waste cooking oil and commercial rejuvenator were fabricated via the orifice-coagulation bath method and the interior structure, mechanical strength, thermal stability and oil content of the prepared capsules were characterized. The healing levels of asphalt mixtures with different capsules under different loading cycles and stress levels were evaluated. Furthermore, the saturates, aromatics, resins and asphaltenes (SARA) fractions and rheological property of extracted asphalt binder within test beams with different capsules after different loading conditions were assessed. The results indicated that all the three types of capsules meet the mechanical and thermal requirement of mixing and compaction of asphalt mixtures. The healing levels of test beams containing vegetable oil capsules were higher than that of waste cooking oil capsules and industrial rejuvenator capsules. The strength recovery ratio and fracture energy recovery ratio of test beams with vegetable oil capsules reached 82.8% and 96.6%, respectively, after 20,000 cycles of compressive loading at 1.4 MPa. The fracture energy recovery ratio of the waste cooking oil capsules also reached as high as 90%, indicating that waste cooking oil can be used as the healing agent of calcium alginate capsules to improve the self-healing property of asphalt mixture. This work provides a significant guide for the selection of healing agent for self-healing capsules in the future.

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Section: Self-healing Property Evaluationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Self-Healing Properties of Asphalt Concrete with Calcium Alginate Capsules Containing Different Healing Agents

Wang

Miao

et al. 2022

Materials

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“…The rutting factor ratio is the ratio of the asphalt rutting factor after aging and before aging. The formula for calculating the rutting factor ratio is shown in Equation (1).…”

Section: Rutting Factor Ratiomentioning

confidence: 99%

“…When using asphalt mixes, the process of ultraviolet radiation induced by asphalt UV aging cannot be neglected, since asphalt mixes are prone to aging under heat or natural conditions [1,2]. Since old asphalt is more susceptible to spalling, potholes, and other pavement diseases, it is imperative to find solutions to improve its performance.…”

Section: Introductionmentioning

confidence: 99%

Study on the Effect of Ultraviolet Absorber UV-531 on the Performance of SBS-Modified Asphalt

Liu

et al. 2022

Materials

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Asphalt pavements at high altitudes are susceptible to aging and disease under prolonged action of UV light. To improve their anti-ultraviolet aging performance, UV-531/SBS-modified asphalts with UV-531 dopings of 0.4%, 0.7%, and 1.0% were prepared by the high-speed shear method, and the effect of UV-531 on the conventional performance of SBS-modified asphalt before aging was studied by needle penetration, softening point and 5 °C ductility tests. The high- and low-temperature rheological properties of UV-531/SBS-modified asphalt before and after aging were also analyzed by high temperature dynamic shear rheology test and low-temperature glass transition temperature test. Finally, the effect of UV-531 on the anti-aging performance of SBS-modified asphalt was evaluated by three methods, including rutting factor ratio, viscosity aging index, and infrared spectroscopy. The results show that with the increase of UV-531 doping, the needle penetration and 5 °C ductility show an increasing trend, but the effect on the softening point is small. The high temperature stability of SBS-modified asphalt is not much affected by the addition of UV-531, and the low-temperature stability is improved, and when 0.7% UV absorber is added, SBS-modified asphalt shows better low-temperature performance. The results of all three evaluation methods show that the addition of UV-531 significantly improved the anti-UV aging performance of SBS-modified asphalt, with the amount of 0.7% providing the asphalt with the best anti-UV aging performance. The results of the study can provide an important reference for improving the anti-ultraviolet aging performance of SBS-modified asphalt.

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Bioinspired Formation of Anti‐Ultraviolet Micro‐Goose Bump PDMAEMA/PS Coatings

Zhu

Wang

Yang

et al. 2023

Chemistry An Asian Journal

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In this paper, inspired by the human‐giving goosebumps process, we demonstrated a rapid, versatile, and simple method to prepare anti‐UV microstructures polymer blend films with good morphology based on phase separation. Through the results of characterizations, it is proved that the microstructures are formed by polymer phase separation. Then the formation possibility of microstructures is proved by thermodynamic analysis. Moreover, the phase‐field model is used to simulate the formation of microstructures by the finite element method, which can illustrate the evolution process of the microstructures. Besides, the microstructures were prepared on different substrates through the simple phase separation method, which can verify the versatility of this method. In addition, the anti‐UV performance of the micro‐structure films was evaluated. This work proposed a simple and versatile route to prepare microstructures coating in different substrates, which exhibit well anti‐UV performance, and this work has the application potential for preventing material aging caused by UV radiation.

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Exploration for UV Aging Characteristics of Asphalt Binders based on Response Surface Methodology: Insights from the UV Aging Influencing Factors and Their Interactions

Cited by 20 publications

References 33 publications

Self-Healing Properties of Asphalt Concrete with Calcium Alginate Capsules Containing Different Healing Agents

Self-Healing Properties of Asphalt Concrete with Calcium Alginate Capsules Containing Different Healing Agents

Study on the Effect of Ultraviolet Absorber UV-531 on the Performance of SBS-Modified Asphalt

Bioinspired Formation of Anti‐Ultraviolet Micro‐Goose Bump PDMAEMA/PS Coatings

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