Analysis of OMMT strengthened UV aging-resistance of Sasobit/SBS modified asphalt: Its preparation, characterization and mechanism

UV radiation is a main factor to reduce the service life of asphalt pavement due to the UV aging of asphalt binder. To obtain enhanced UV aging resistance, an organic UV absorber called 2-hydroxy-4-n-octoxy-benzophenone (HNOB) had been intercalated into an inorganic UV absorber called Zn/Al layered double hydroxide (LDH) to play a combined anti-UV role in asphalt binder. Fourier transform infrared spectroscopy revealed that HNOB anions have been intercalated into the interlayer galleries of Zn/Al-LDH containing HNOB anions (Zn/Al-HNOB−-LDH). X-ray diffraction results of Zn/Al-LDH containingCO32−anions (Zn/Al-CO32--LDH) andZn/Al-CO32--LDH/styrene-butadiene-styrene (SBS) modified asphalt disclosed that asphalt molecules entered into LDH interlayer galleries to form an expanded phase structure. UV-Vis absorbance patterns showed that Zn/Al-HNOB−-LDH has a better capacity of blocking UV light due to the synergetic effect of HNOB and Zn/Al-LDH. The chemical fractions analysis, conventional physical tests, and rheological tests of SBS modified asphalt,Zn/Al-CO32--LDH/SBSmodified asphalt, and Zn/Al-HNOB−-LDH/SBS modified asphalt before and after UV aging testified that Zn/Al-HNOB−-LDH can improve the UV aging resistance of SBS modified asphalt more significantly.

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Fabrication of IPDI-LDHs/SBS modified asphalt with enhanced thermal aging and UV aging resistance

Construction and Building Materials ◽

10.1016/j.conbuildmat.2021.124131 ◽

2021 ◽

Vol 302 ◽

pp. 124131

Author(s):

Jing Li ◽

Jing Yang ◽

Yu Liu ◽

Zhenxia Zhao ◽

Xiaoying Tang ◽

...

Keyword(s):

Thermal Aging ◽

Uv Aging ◽

Modified Asphalt ◽

Aging Resistance ◽

Sbs Modified Asphalt

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Study on Ultraviolet Aging Mechanism of Carbon Nanotubes/SBS Composite-Modified Asphalt in Two-Dimensional Infrared Correlation Spectroscopy

Materials ◽

10.3390/ma14195672 ◽

2021 ◽

Vol 14 (19) ◽

pp. 5672

Author(s):

Xuewen Zheng ◽

Wenyuan Xu ◽

Shuangrui Xie

Keyword(s):

Carbon Nanotubes ◽

Functional Groups ◽

Asphalt Binder ◽

Correlation Spectroscopy ◽

Two Dimensional ◽

Uv Aging ◽

Modified Asphalt ◽

Correlation Spectrum ◽

Modified Asphalt Binder ◽

Sbs Modified Asphalt

In order to explore the influence mechanism of carbon nanotubes on the ultraviolet (UV) aging properties of the SBS-modified asphalt binder, the changes of functional groups in the one-dimensional infrared spectrum and two-dimensional infrared correlation spectrum are studied in this paper. The results show that the UV aging process of the SBS-modified asphalt binder is the process of alkane chain cleavage and reorganization, the formation of oxygen-containing functional groups and decomposition of SBS. The incorporation of carbon nanotubes can reduce the mutual conversion of methyl and methylene functional groups, inhibit the decomposition of butadiene and the destruction of C = C double bonds in SBS. The degradation of SBS during the process of UV aging leads to the change of many functional groups and acceleration of the aging of the SBS-modified asphalt binder. The addition of carbon nanotubes can effectively alleviate the degradation of SBS and the formation of oxygen-containing functional groups at the early stage of UV aging, and reduce the influence of these two changes on other functional groups; thus, improving the anti-aging performance of the SBS-modified asphalt binder.

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Improving the aging resistance of SBS modified asphalt with the addition of highly reclaimed rubber

Construction and Building Materials ◽

10.1016/j.conbuildmat.2017.03.242 ◽

2017 ◽

Vol 145 ◽

pp. 126-134 ◽

Cited By ~ 25

Author(s):

Raqiqa tur Rasool ◽

Shifeng Wang ◽

Yong Zhang ◽

Yue Li ◽

Guangtai Zhang

Keyword(s):

Modified Asphalt ◽

Aging Resistance ◽

Sbs Modified Asphalt

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

Polymers ◽

10.3390/polym11071111 ◽

2019 ◽

Vol 11 (7) ◽

pp. 1111 ◽

Cited By ~ 23

Author(s):

Huanan Yu ◽

Xianping Bai ◽

Guoping Qian ◽

Hui Wei ◽

Xiangbing Gong ◽

...

Keyword(s):

Rheological Properties ◽

Uv Radiation ◽

Asphalt Pavement ◽

Asphalt Binder ◽

Asphalt Binders ◽

Shrinkage Stress ◽

Uv Aging ◽

Modified Asphalt ◽

Aging Properties ◽

Sbs Modified Asphalt

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

Construction and Building Materials ◽

10.1016/j.conbuildmat.2021.124108 ◽

2021 ◽

Vol 301 ◽

pp. 124108

Author(s):

Meijie Liao ◽

Zhaohui Liu ◽

Yingli Gao ◽

Li Liu ◽

Shuncheng Xiang

Keyword(s):

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Nano Tio2 ◽

Uv Aging ◽

Modified Asphalt ◽

Rubber Composite ◽

Aging Resistance ◽

Styrene Butadiene

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Effect of the Amount of Mineral Powder on the Ultraviolet Aging Properties of Asphalt

Advances in Materials Science and Engineering ◽

10.1155/2016/5207391 ◽

2016 ◽

Vol 2016 ◽

pp. 1-9 ◽

Cited By ~ 8

Author(s):

Xiangbing Xie ◽

Shenjia Tong ◽

Yabi Ding ◽

Hongni Liu ◽

Linyuan Liang

Keyword(s):

Gel Permeation Chromatography ◽

Uv Aging ◽

Modified Asphalt ◽

Aging Properties ◽

The Matrix ◽

Mineral Powder ◽

Styrene Butadiene ◽

Sbs Modified Asphalt ◽

Asphalt Mortar ◽

Ultraviolet Aging

Mortar has an important influence on the viscosity and durability of a mixture. The effects of the amount of mineral powder in asphalt mortar on the ultraviolet (UV) aging properties of asphalt were investigated by a Fourier transform infrared spectrum (FTIR), gel permeation chromatography (GPC), and dynamic shear rheometer (DSR). The FTIR results show that the UV-resistant aging ability of asphalt mortar was superior to asphalt and that the carbonyl indices of the SBS- (styrene-butadiene-styrene-) asphalt mortar and matrix asphalt mortar were more significant. The GPC results show that the molecular weight distribution coefficient (Mw/Mn) of the SBS-asphalt-filler mastic is 1.0 and that of the matrix asphalt-filler mastic is 1.2, which is the largest. The macro-property is the most stable. The DSR results show that the matrix asphalt-filler mastic ranging from 1.0 to 1.2 and the SBS-modified asphalt-filler mastic ranging from 0.8 to 1.0 show the best UV aging resistance. Therefore, the effects of the amount of mineral powder cannot be ignored, suggesting that the best mass ratio of the matrix asphalt mortar is 1.2 and that of the SBS-modified asphalt mortar is 1.0 during the UV aging process.

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Evaluation of Properties and Micro-Characteristics of Waste Polyurethane/Styrene-Butadiene-Styrene Composite Modified Asphalt

Polymers ◽

10.3390/polym13142249 ◽

2021 ◽

Vol 13 (14) ◽

pp. 2249

Author(s):

Bei Chen ◽

Fuqiang Dong ◽

Xin Yu ◽

Changjiang Zheng

Keyword(s):

Low Temperature ◽

Performance Test ◽

Permanent Deformation ◽

Modified Asphalt ◽

Basic Performance ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Sbs Modified Asphalt ◽

And Storage ◽

Butadiene Styrene

In order to solve the problems caused by asphalt diseases and prolong the life cycle of asphalt pavement, many studies on the properties of modified asphalt have been conducted, especially polyurethane (PU) modified asphalt. This study is to replace part of the styrene-butadiene-styrene (SBS) modifier with waste polyurethane (WP), for preparing WP/SBS composite modified asphalt, as well as exploring its properties and microstructure. On this basis, this paper studied the basic performance of WP/SBS composite modified asphalt with a conventional performance test, to analyze the high- and low-temperature rheological properties, permanent deformation resistance and storage stability of WP/SBS composite modified asphalt by dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The microstructure of WP/SBS composite modified asphalt was also observed by fluorescence microscope (FM) and Fourier transform infrared spectroscopy (FTIR), as well as the reaction between WP and asphalt. According to the results of this study, WP can replace SBS as a modifier to prepare WP/SBS composite modified asphalt with good low-temperature resistance, whose high-temperature performance will be lower than that of SBS modified asphalt. After comprehensive consideration, 4% SBS content and 15% WPU content (4 S/15 W) are determined as the suitable types of WPU/SBS composite modified asphalt.

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