Identification of asphalt aging characterization by spectrophotometry technique

Hou, Xiangdao; Xiao, Feipeng; Wang, Jingang; Amirkhanian, Serji

doi:10.1016/j.fuel.2018.04.030

Cited by 168 publications

(33 citation statements)

References 14 publications

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“…FTIR is a quantitative and qualitative technique for analyzing the contents of organic components based on the changes of functional groups, which has been demonstrated to be an effective tool to describe the aging characterization of asphalt binders [17,24,25]. The principle of FTIR is that the molecules vibrate when organic compounds absorb infrared light at the corresponding wavelength, and the molecular vibration can be divided into stretching vibration and bending vibration (see Figure 2).…”

Section: Methodsmentioning

confidence: 99%

Impact of Ultraviolet Radiation on the Aging Properties of SBS-Modified Asphalt Binders

et al. 2019

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Styrene Butadiene Styrene (SBS) polymer-modified asphalt binders have become widely used in asphalt pavement because of their advantages in high- and low-temperature performance and fatigue resistance. Asphalt pavement is inevitably exposed to sunlight and ultraviolet (UV) radiation during its construction and service life. However, consideration of the aging effect of UV radiation is still limited in current pavement design and evaluation systems. In order to evaluate the impact of UV radiation on the aging properties of SBS-modified asphalt binders, UV aging tests were performed on Rolling Thin Film Oven Test (RTFOT)-aged samples with different UV radiation intensities and aging times. Sixteen different groups of tests were conducted to compare the rheological properties and functional group characteristics of SBS-modified asphalt binders. Dynamic Shear Rheometer (DSR), Bending Beam Rheometer (BBR), FTIR, and SEM tests were conducted to evaluate the aging mechanisms in various UV aging conditions. The results found that UV radiation seriously destroys the network structure formed by the cross-linking effect in SBS-modified asphalt binders, which aggravates the degradation of SBS and results in a great change of rheological properties after UV aging. The nature of SBS-modified asphalt binder aging resulted from the degradation of SBS and the changes of asphalt binder base composition, which lead to the transformation of colloidal structure and the deterioration of asphalt binder performance. The tests also found that continuous UV radiation can increase shrinkage stress in the asphalt binder surface and leads to surface cracking of the asphalt binder.

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Section: Methodsmentioning

confidence: 99%

Impact of Ultraviolet Radiation on the Aging Properties of SBS-Modified Asphalt Binders

et al. 2019

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“…Thermal-oxidative aging of bitumen is principally associated with the oxidative reaction between bitumen and oxygen and the volatilization of light components [ 12 ]. Due to the oxidation and the volatilization, the morphological, physical, and rheological properties of bitumen varied [ 13 , 14 , 15 , 16 , 17 ]. These changes in bitumen performance would result in distresses or deteriorations on asphalt pavement.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Thermal-Oxidative Aging and Salt Solution Aging on Bitumen Performance

Zhang

Hoff

2021

Materials

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The aging of bitumen is detrimental to the durability and service life of asphalt pavement. Previous studies found that bitumen was suspected to be aged by not only thermal oxidation but also solution immersion. This research aims to compare the effect of thermal-oxidative aging and salt solution aging on bitumen performance. For this purpose, a thin film oven test (TFOT) and pressure aging vessel aging (PAV) were selected as thermal-oxidative aging, and 10% NaCl aging and 10% CaCl2 aging were selected as salt solution aging. The morphology, oxygen content, physical properties, low-temperature properties, and high-temperature properties of bitumen were analysed by employing scanning electron microscopy with an energy dispersive spectrometer (SEM-EDS), physical tests, a bending beam rheometer (BBR), and a dynamic shear rheometer (DSR). Test results show that both thermal-oxidative aging and salt solution aging had similar influencing trends in the oxygen content, physical, low-temperature, and high-temperature properties of bitumen but had different changes in morphology. The aging degrees caused by four kinds of aging methods were obtained based on the summed values of the absolute aging factor of all parameters: PAV > 10% NaCl > TFOT > 10% CaCl2. The conclusions could provide a theoretical basis to establish a standard for the solution aging of bitumen.

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“…Moreover, the asphalt aging conditions selected above are relatively simple, but the actual environment of asphalt is relatively complex. For example, water is a medium that accelerates the aging of asphalt under the combined effects of time, heat, oxygen and sunlight [ 23 , 24 , 25 ]. Traxler [ 26 ] listed 15 factors that cause asphalt aging and found that water accelerates asphalt aging under the combined effects of time and sunlight.…”

Section: Introductionmentioning

confidence: 99%

Influence of Different Aging Environments on Rheological Behavior and Structural Properties of Rubber Asphalt

2020

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Research on asphalt aging properties mainly focuses on temperature and ultraviolet (UV) radiation, while water, acid and salt media in natural environment are often ignored. According to the aging simulation of self-made UV environment chamber, the influence of the coupling effect of different media and UV radiation on rubber asphalt properties was analyzed through physical properties, rheological properties and micro characteristics, and the structural properties of asphalt were revealed. The results indicated that different media can accelerate the aging of rubber asphalt. The penetration, creep rate and non-recoverable creep compliance of asphalt decreased, while the softening point, rutting factor, recoverable rate, fatigue factor and stiffness modulus increased. The coupling effect between acid and UV radiation had the most impact on asphalt rutting and fatigue cracking. The rubber asphalt performed better at high-temperature after aging, and it was more prone to fatigue damage and performed worse at low-temperature. Through the oxygen absorption reaction causing asphalt aging, the intensity of the absorption peaks of the carbonyl and sulfoxide groups increased and the light components of the asphalt transitioned to heavy components under UV radiation. These media intensified this process, which resulted in the gradual transformation of the asphalt colloid structure into a gel type. The carbon black contained in the waste rubber powder made the rubber asphalt exhibit better anti-aging properties.

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Identification of asphalt aging characterization by spectrophotometry technique

Cited by 168 publications

References 14 publications

Impact of Ultraviolet Radiation on the Aging Properties of SBS-Modified Asphalt Binders

Impact of Ultraviolet Radiation on the Aging Properties of SBS-Modified Asphalt Binders

Comparative Study of Thermal-Oxidative Aging and Salt Solution Aging on Bitumen Performance

Influence of Different Aging Environments on Rheological Behavior and Structural Properties of Rubber Asphalt

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