Basic performance and asphalt smoke absorption effect of environment-friendly asphalt to improve pavement construction environment

Wang, Chaohui; Wang, Menghao; Chen, Qian; Zhang, Lian

doi:10.1016/j.jclepro.2021.130142

Cited by 48 publications

(15 citation statements)

References 37 publications

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“…Asphalt binder is a viscous liquid or semi-solid material after petroleum under reduced pressure distillation which is widely used as the adhesive material for asphalt pavement [1]. Asphalt binder is neither a uniform nor unidirectional system but contains a microstructure of a few to a tenth of micrometers, containing about 105~106 different chemicals, which is a material with complex structure and composition [2].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Surface Micro-Mechanical Properties of Various Asphalt Binders Using AFM

et al. 2022

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The microstructure of asphalt affects the micro-mechanical properties. In this study, atomic force microscopy (AFM) was used to investigate the surface elastic modulus and nanohardness of asphalt binder. Relevant mechanical indexes were quantitatively evaluated by contact mechanical model. Five types of asphalts, including different grades, oil sources, and before and after modification, were selected as test objects, and the effects of asphalt binder type, aging, water, and anti-stripping agent on the asphalt micromechanics were explored. The results showed that the micromechanical properties of asphalt binder are affected by grade, oil source, and modification. The aging resistance of modified asphalt binder is better than that of unmodified asphalt binder. Water immersion reduces the surface micromechanical properties of the asphalt binder. The effect of the anti-stripping agent on the modified asphalt binder is greater than that of the unmodified asphalt binder.

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Section: Introductionmentioning

confidence: 99%

Investigation of Surface Micro-Mechanical Properties of Various Asphalt Binders Using AFM

et al. 2022

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“…During the long-term service period, the coupling e ect of various factors such as ultraviolet radiation, temperature, and water on the asphalt material will cause irreversible aging, and the road performance will be signi cantly deteriorated, which will lead to premature cracks, potholes, and spalling of the asphalt pavement and other adverse diseases [4][5][6]. Among them, ultraviolet radiation can induce the transformation of chemical components in asphalt, destroy the stability of asphalt colloid structure, and accelerate the performance degradation of asphalt pavement, which was one of the important factors leading to long-term aging of asphalt.…”

Section: Introductionmentioning

confidence: 99%

Effects of UV Aging on Physical Properties and Physicochemical Properties of ASA Polymer-Modified Asphalt

Sun

Peng

Zhu³

et al. 2022

Advances in Materials Science and Engineering

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The purpose of this study was to characterize and evaluate the effects of UV radiation on the rheological and physicochemical properties of ASA polymer-modified asphalt. The conventional properties (penetration, softening point, ductility, and Brookfield viscosity) of ASA polymer-modified asphalt were tested. Based on rheology, the effect of different UV irradiation times on the high-temperature performance of ASA polymer-modified asphalt was systematically characterized, the thermogravimetric analyzer (TGA) was used to analyze thermogravimetric properties of ASA polymer-modified asphalt, and the micromorphological characteristics of ASA-modified asphalt under different UV irradiation times were characterized by scanning electron microscope (FIB-SEM). The results show that the ASA polymer has a significant effect on the basic properties of asphalt. Compared with the base asphalt, the high-temperature stability of the modified asphalt was decreased, and the low-temperature ductility performance was improved. ASA polymer can effectively reduce the aging effect of ultraviolet radiation on the base asphalt and inhibit the generation of microcracks. ASA polymers improve the thermal stability of asphalt binders. During the aging process, the formation of carbonyl and sulfoxide groups was inhibited, indicating that ASA polymer can effectively delay the UV aging of asphalt.

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“…According to the latest statistical bulletin of the Ministry of Transport of China, the total mileage of roadways in China has occupied first place globally, reaching 5.198 million kilometers. Asphalt pavement provides outstanding performance and ride comfort, accounting for more than 90% of the highways [ 1 , 2 ]. Nevertheless, as the mileage of asphalt pavements that must be maintained grows, the disease and disposal issues of asphalt pavement have drawn people’s attention.…”

Section: Introductionmentioning

confidence: 99%

Bionic Synthesis of Mussel-like Adhesive L-DMA and Its Effects on Asphalt Properties

Liu

2022

Materials

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Cracks are inevitable during the service life of asphalt pavement and the water at the fracture surfaces tends to cause the grouting materials to fail. Studies have shown that the catechol groups in adhesion proteins secreted by mussels can produce strong adhesion performance in the water. In this paper, the mussel-like adhesive L-Dopa Methacrylic anhydride (L-DMA) was prepared based on the concept of bionic design and used to improve the properties of asphalt. By using Fourier-transform infrared spectroscopy (FTIR) and Thermogravimetric analysis (TGA), the thermal stability and structural composition of L-DMA were investigated. Then, the rheological and low-temperature properties of L-DMA-modified asphalt were investigated using the dynamic shear rheological (DSR) test and bending beam rheological (BBR) test. Moreover, the modification mechanism was explored by FTIR. It was found that L-DMA can be effectively synthesized and has good thermal stability. The incorporation of L-DMA increases the composite modulus, viscosity, creep recovery rate and rutting factor of asphalt binder, resulting in an enhancement of its high-temperature performance. At a high L-DMA content of 10%, the low-temperature performance of the modified asphalt was enhanced. The modification of L-DMA to asphalt is mainly a physical process. Hydrogen bonds and conjugated systems generated by the introduction of catechol groups enhance the adhesion properties of asphalt. In general, L-DMA improves the properties of asphalt and theoretically can improve the water resistance of asphalt, which will be explored in future research.

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Basic performance and asphalt smoke absorption effect of environment-friendly asphalt to improve pavement construction environment

Cited by 48 publications

References 37 publications

Investigation of Surface Micro-Mechanical Properties of Various Asphalt Binders Using AFM

Investigation of Surface Micro-Mechanical Properties of Various Asphalt Binders Using AFM

Effects of UV Aging on Physical Properties and Physicochemical Properties of ASA Polymer-Modified Asphalt

Bionic Synthesis of Mussel-like Adhesive L-DMA and Its Effects on Asphalt Properties

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