Investigation of the ultraviolet aging resistance of organic layered double hydroxides modified bitumen

Xu, Song; Li, Lian; Yu, Jianying; Zhang, Canlin; Zhou, Ji Ping; Sun, Yu

doi:10.1016/j.conbuildmat.2015.08.019

Cited by 28 publications

(10 citation statements)

References 32 publications

(32 reference statements)

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“…He concluded that the penetration results of CAP 50/70 showed that doses below 5 Gy inhibited the influence of gamma radiation in the bitumen mechanical properties. The results of MR tests agree with White oak, leading to conclusion that the gamma radiation causes aging in Bitumen and Asphaltic mixes [9].…”

Section: Introductionsupporting

confidence: 67%

Degradative Effect of I.R Radiations on the Constituents of Bitumen

Niran

Mathew

Oluwamayowa

2019

AJACR

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Sample of natural bitumen were taken from bitumen well in Agbabu town in Odigbo Local Government of Ondo State. These samples were separately irradiated with infrared radiations for a period of seven hours. Part of the sample was withdrawn at interval of One, Three and Seven hours. The withdrawn sample was later separated into maltene and asphaltene fractions. The maltene fraction was further separated into saturated, aromatic and polar fraction. The saturated and aromatic fractions were subjected to gas chromatography analysis. The Saturated and aromatic profiles of the bitumen were found to vary with the period of irradiation. The Chemical composition of both the saturated and aromatic compounds in the bitumen decreased with the period of irradiation. Thus, decrease in the chemical composition of bitumen as a result of irradiation cause aging of bitumen. Therefore, I.R radiations were found to have a degradative effect on the composition of bitumen.

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Section: Introductionsupporting

confidence: 67%

Degradative Effect of I.R Radiations on the Constituents of Bitumen

Niran

Mathew

Oluwamayowa

2019

AJACR

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“…Bitumen aging generally consists of short-term thermal oxidation aging, long-term thermal aging and UV aging [ 12 , 13 ]. Although UV aging only occurs on superficial layers [ 14 ], the effect of UV aging on the properties of bitumen and pavement cannot be ignored [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Ultraviolet Radiation on Bitumen Aging Depth

Liu

et al. 2018

Materials

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The aging effect of ultraviolet (UV) radiation on bitumen has gained increasing attention from researchers, resulting in the emergence of a new method to simulate the UV aging that occurs during the service life of bitumen. However, the UV aging degree is closely related to bitumen thickness and the effect of UV radiation on aging depth is not clear. The relationship between ultraviolet (UV) radiation and bitumen UV aging depth was investigated in this paper. Three groups of samples were UV aged using different aging procedures to investigate the bitumen aging mechanism of UV radiation. The results from the first group showed that UV aging depth increased along with aging time. After aging for five hours, the complex modulus of the second and third layers increased. The second group’s results indicated that the aging effect of ozone was small and that the increase in aging depth was uncorrelated with ozone. The results from the third group showed that the transmittance of bitumen increased after UV aging and that the real reason why aging depth increased was permeation.

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“…The Rolling Thin Film Oven Test (RTFOT, ASTM D2872) is used to replicate the short-term aging that occurs during the mixing operation, while the Pressure Aging Vessel (PAV, ASTM D6521) is adopted to reproduce the longterm aging. The RTFOT and PAV tests mainly simulate the thermal-oxidative aging that is caused by heat and oxygen, but the photo-oxidative aging which is caused by the ultraviolet (UV) radiation and oxygen is often ignored, and there is no standardized test that allows quantitative evaluation of the photo-oxidative degradation of bitumen (Mouillet et al, 2008, Xiao et al, 2015, Kuang et al, 2014, Xu et al, 2015, Lopes et al, 2014, Araújo et al, 2013. Mouillet et al (2014) emphasize the relevant effect of UV radiation on asphalt aging and cited that the UV exposure may affect the bitumen's properties of pavement upper layers more strongly than the PAV simulation in laboratory (without UV action) does.…”

Section: Introductionmentioning

confidence: 99%

“…Several anti-aging additives have been studied to produce modified asphalt binders to mitigate the effects of detrimental agents such as solar radiation, temperature and oxygen (Araújo et al, 2013). Carbon black could block the UV rays, but the addition of carbon black has a negative effect on the lowtemperature performance of bitumen (Yamaguchi et al, 2005, Cong et al, 2014. Other anti-aging agents used in asphalt are styrene-butadiene rubber (Zhang and Hu, 2013), styrenebutadiene-styrene (Cong et al, 2014, Cortizo et al, 2004, polyphosphoric acid and sulfur (Zhang and Hu, 2013), lignin (Pan, 2012), and graphite (Pan et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance

Banja¹,

Araújo

Castro

et al. 2018

REM, Int. Eng. J.

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The effect of short-term oxidation, evaluated by using a Rolling Thin Film Oven Test, and the effect of weathering aging on the oxidation process of hydrated lime modified asphalts were studied. Hydrated lime (HL) has been known as an additive for asphalt mixtures and is now considered as a binder additive that increases asphalt mixture durability. HL was added to the binder in contents of 5, 10, 20, and 30 wt.%. The HL modified binders were aged by using the Rolling Thin Film Oven Test and weathering tests with xenon radiation. A storage stability test by measuring the softening points of HL modified binders was performed. The Thin Layer Chromatography with Flame Ionization Detection (TLC-FID) analysis was used to determine the fractions of resins, aromatics, asphaltenes and saturates of the binders. The aging of HL modified binders was evaluated by using Fourier transform infrared spectroscopy. According to the stability test, a hydrated lime concentration value close to 20 wt.% is the critical point at which there is a risk of segregation of the asphalt binder and hydrated lime during transportation and storage. For the sample weathering aged for 250 hours, a decrease of saturated and aromatic fractions, furthermore an increase in asphaltenes were observed for all samples. Results have shown that additions of 10 wt.% of hydrated lime in asphalt binders resulted in a higher photodegradation resistance among the other asphalt mixtures considering the carbonyl index, stability test and colloidal instability test results.

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Investigation of the ultraviolet aging resistance of organic layered double hydroxides modified bitumen

Cited by 28 publications

References 32 publications

Degradative Effect of I.R Radiations on the Constituents of Bitumen

Degradative Effect of I.R Radiations on the Constituents of Bitumen

The Effect of Ultraviolet Radiation on Bitumen Aging Depth

Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance

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