Proposing a new infrared index quantifying the aging extent of SBS-modified asphalt

Yan, Chuanqi; Huang, Weidong; Xiao, Feipeng; Wang, Lianfang; Li, Yanwei

doi:10.1080/14680629.2017.1318082

Cited by 59 publications

(25 citation statements)

References 32 publications

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“…The increase in vinyl content significantly increases the intensity of the bands at 910 and 966 cm −1 due to =C–H vibrations in the polybutadiene (PB) segment [ 38 , 39 ]. The increased vinyl content can facilitate increased interaction between the polymer and the binder molecules due to the decreased steric hindrance to the C=C bond [ 37 , 38 , 39 , 40 , 41 ]. The assignment of the basic bands in the FT-IR spectrum is presented in Table 2 .…”

Section: Test Materialsmentioning

confidence: 99%

Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders

et al. 2021

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The requirements imposed on road pavements are ever increasing nowadays, necessitating the improvement of the properties of paving materials. The most commonly used paving materials include bituminous mixtures that are composed of aggregate grains bound by a bituminous binder. The properties of bitumens can be improved by modification with polymers. Among the copolymers used for modifying bitumens, styrene–butadiene–styrene, a thermoplastic elastomer, is the most commonly used. This article presents the results of tests conducted on bitumens modified with two types of styrene–butadiene–styrene copolymer (linear and radial). Two bitumen types of different penetration grades (35/50 and 160/220) were used in the experiments. The content of styrene–butadiene–styrene added to the bitumen varied between 1% and 6%. The results of the force ductility test showed that cohesion energy can be used for qualitative evaluation of the efficiency of modification of bitumen with styrene–butadiene–styrene copolymer. The determined values of the cohesion energy were subjected to the original analysis taking into account the three characteristic elongation zones of the tested binders. The performed analyses made it possible to find a parameter whose values correlate significantly with the content of styrene–butadiene–styrene copolymer in the modified bitumen. With smaller amounts of added modifier (approximately 2%), slightly better effects were obtained in the case of linear copolymer styrene–butadiene–styrene and for larger amounts of modifier (5–6%) radial copolymer styrene–butadiene–styrene was found to be more effective. This is confirmed by the changes in the binder structure, as indicated by the penetration index (PI).

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Section: Test Materialsmentioning

confidence: 99%

Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders

et al. 2021

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“…PS is relatively stable and exhibited much smaller change after ageing. Thus, the newly proposed IB/S was employed to evaluate the damage level of SBS in PMA, which is not influenced by the SBS concentration and the scanning depth (Yan, Huang, and Tang 2017;Yan et al 2018).…”

Section: Fourier Transform Infrared (Ft-ir) Spectroscopymentioning

confidence: 99%

Laboratory Evaluation of the Effects of Long-Term Aging on High-Content Polymer-Modified Asphalt Binder

Lin

Huang

Liu

et al. 2020

J. Mater. Civ. Eng.

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The most common polymer-based modifier for asphalt binders is the styrene-butadiene-styrene (SBS), which owns superior mechanical characteristics to asphalt, such as increased toughness and resistance against permanent deformation. These properties improved further when higher amounts of SBS are incorporated in asphalt. Although this type of asphalt binders, named high content polymer modified asphalt (HCPMA) binders are used mainly for porous pavements, limited research on their ageing performance has been conducted. In this paper, Gel Permeation Chromatography (GPC), Fourier Transform Infrared (FTIR) and Dynamic shear rheology (DSR) were used to explore the evolution of chemical and rheological properties of HCPMA along with the ageing process and to comprehend factors affecting ageing. Firstly, this study identified that the ageing of HCPMA was a combination of oxidation of base asphalt and degradation of SBS polymer leading to an increase and a decrease of elasticity, respectively. The degradation of SBS happened mostly at the beginning and slowed down after ageing in Pressure Ageing Vessel (PAV)for 20 hours, which resulted in worst rutting resistance for HCPMA. The second finding is that, when SBS content was higher than 7.5%, more than half of SBS polymer remained even after 80 hours of PAV ageing. Although the molecular weight of SBS decreased from 230,000 to 70,000 due to the degradation, its modification effect was still significant. Thirdly, highly modification of SBS can retard the oxidation and hardening of base asphalt, especially from origin to first PAV aging state. Finally, Principal Component Analysis showed ten parameters used in this study could be explained by two principals: SBS content and asphalt ageing level. Based on PCA results, the complex modulus (G*) or phase angle (δ) of HCPMA can be well fitted (R 2 >0.7) by the exponential function of SBS content and ageing index.

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“…In order to further compare and analyze changes in the characteristic functional groups of asphalt before and after aging, the carbonyl index (CI C�O ), SBS modifier's damage index (I B/S ) [31], and sulfoxide index (SI S�O ) were used, and OMINIC infrared spectroscopy software analyzed the related areas.…”

Section: Fourier Transform Infrared (Ftir) Characterizationmentioning

confidence: 99%

Synergetic Effect of Nano‐ZnO and Trinidad Lake Asphalt for Antiaging Properties of SBS‐Modified Asphalt

Zhan

Xie

et al. 2020

Advances in Civil Engineering

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In order to address the influence of aging on the performance degradation of SBS-modified asphalt, a composite modification of SBS-modified asphalt by nano-zinc oxide (nano-ZnO) and Trinidad Lake asphalt (TLA) was proposed. Several tests were conducted after adding nano-ZnO and TLA to SBS-modified asphalt, including a rotary film oven test (RTFOT), ultraviolet aging (UV), and the pressure aging vessel test (PAV). The conventional physical index, rheological index, and four-component content of SBS-modified asphalt before and after three aging modes were tested, and the characteristic functional groups in SBS-modified asphalt were tracked and analyzed by Fourier transform infrared spectroscopy (FTIR). The results show that the effects of aging on the rheological properties of SBS-modified asphalt are clearly reduced by adding different proportions of nano-ZnO and TLA in the process of thermal oxygen aging and the ultraviolet aging test, and the antiaging ability of SBS-modified asphalt is clearly improved. To improve the conventional performance and rheological properties of SBS-modified asphalt, an incorporation ratio of 3% nano-ZnO + 25% TLA was proposed. At the same time, the increased rate of heavy components and the change index of the colloidal instability index in the SBS-modified asphalt under the blending ratio were significantly lower than the blank SBS-modified asphalt samples in the same aging mode. FTIR spectra also showed that SBS-modified asphalt performance deterioration were mainly caused by long-term aging and ultraviolet aging. The addition of nano-ZnO and TLA effectively reduced the increase of carbonyl groups and the breakage of the C=C double bond in butadiene and synergistically improved the comprehensive aging resistance of SBS-modified asphalt. Therefore, the use of this modification is an effective method to solve the aging problem of SBS-modified asphalt.

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Proposing a new infrared index quantifying the aging extent of SBS-modified asphalt

Cited by 59 publications

References 32 publications

Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders

Experimental Study of Tensile Properties of Styrene–Butadiene–Styrene Modified Asphalt Binders

Laboratory Evaluation of the Effects of Long-Term Aging on High-Content Polymer-Modified Asphalt Binder

Synergetic Effect of Nano‐ZnO and Trinidad Lake Asphalt for Antiaging Properties of SBS‐Modified Asphalt

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