Modification mechanism of C9 petroleum resin and its influence on SBS modified asphalt

Zhang, Wengang; Qiu, Ling Yu; Liu, Jianping; Hu, Kui; Zou, Ling; Yu, Claire; Yang, Chengxu; Wang, Fang; Zang, Jinhao

doi:10.1016/j.conbuildmat.2021.124740

Cited by 23 publications

(5 citation statements)

References 21 publications

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“…Therefore, fluorescence electron microscopy can be used to observe the actual structure of the polymer phase in asphalt, including the particle size, morphology, distribution characteristics, and the degree of continuity between the asphalt phase and the polymer phase. The phase structure of modified asphalt greatly affects its storage stability, etc., in high-temperature environments [ 36 ]. The results of the observations are shown in Figure 13 .…”

Section: Resultsmentioning

confidence: 99%

Study on Properties and Micro-Mechanism of RHB-SBS Composite-Modified Asphalt

Chen

Shi

et al. 2023

Polymers

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Rice husk biochar (RHB) is a renewable agricultural waste, and its fixation on pavements helps develop environmentally friendly, economical, and sustainable asphalt pavements. This paper used RHB to replace part of styrene-butadiene-styrene (SBS) for the composite modification study of matrix asphalt. The high- and low-temperature properties and microscopic mechanisms of the composite-modified asphalt were studied through a series of tests. The results showed that, compared with SBS-modified asphalt, the softening point, viscosity, complex shear modulus, stiffness modulus, and rutting factors of RHB-SBS composite-modified asphalt were improved. In contrast, the ductility and creep rate were slightly decreased, indicating an improvement in the high-temperature performance of composite-modified asphalt, but a slight decrease in its low-temperature performance. The process of RHB and SBS composite modification was mainly physical blending, with only a small number of chemical reactions, and no new functional groups were generated. The porous structure of RHB enables it to adhere better to the network crosslinked continuous phase system formed by SBS and matrix asphalt. This results in composite-modified asphalt with good high-temperature storage stability and rheological properties. Therefore, RHB-SBS composite-modified asphalt can be applied to high-temperature areas and rice-producing areas, and the optimal content of RHB is suggested to be 15%.

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Section: Resultsmentioning

confidence: 99%

Study on Properties and Micro-Mechanism of RHB-SBS Composite-Modified Asphalt

Chen

Shi

et al. 2023

Polymers

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“…Petroleum resin materials exhibit good compatibility with asphalt, and their blending results in excellent thickening effects. After the addition of C9 petroleum resin, the shear process promotes the bonding of double bonds through oxygen, ultimately forming an intertwined network structure of conjugated pi bonds with the SBS modifier and base asphalt [ 31 ]. This dense network structure reduces the flowability of the asphalt, leading to a significant increase in the viscosity and softening point of PR/SBSMA, while the penetration index continues to decrease.…”

Section: Results and Analysismentioning

confidence: 99%

Study on Adhesion Performance and Aging Strength Degradation Mechanism of SBS Modified Asphalt with Different Anti-Aging Additive

Zhuang

Guo

et al. 2023

Materials

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After aging, the adhesiveness of asphalt deteriorates, leading to a reduction in the durability of asphalt mixtures and affecting the service life of asphalt pavements. To enhance the anti-aging performance of asphalt, this study employed the method of melt blending to prepare three types of modified asphalt: graphene/SBS modified asphalt (G/SBSMA), crumb rubber/SBS modified asphalt (CR/SBSMA), and petroleum resin/SBS modified asphalt (PR/SBSMA). Different dosages of the three types of modified asphalt were tested for changes in conventional performance indicators. The optimal dosages of graphene, crumb rubber, and C9 petroleum resin were determined to be 2%, 15%, and 5%, respectively. Based on the theory of surface free energy, the effects of anti-aging agents on the microscopic properties of SBS modified asphalt before and after aging were analyzed using the three-liquid method. The mechanisms of strength attenuation at the asphalt–aggregate interface under water exposure and aging were revealed. The results showed that with the increase of aging gradient, the asphalt-aggregate biphasic system became more active. The cohesive energy and peel energy of SBS modified asphalt increased continuously, while the adhesive energy decreased continuously, leading to a decrease in the energy ratio parameter. Resin-based anti-aging agents exhibited the most significant improvement in asphalt adhesion performance, while graphene demonstrated a more stable enhancement in asphalt’s water stability during the aging stage.

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“…This characteristic makes C 9 PR an ideal modifier for improving the road performance of styrene-butadiene-styrene (SBS) modified asphalt. SBS is a commonly used highperformance polymer modifier that can significantly improve the elasticity and durability of asphalt [13,14]. However, the cost of SBS modified asphalt is relatively high, and there is still room for improvement in certain performance aspects.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Effect of C9 Petroleum Resin on Rheological Behavior, Microstructure, and Chemical Properties of Styrene–Butadiene–Styrene Modified Asphalt

Yan,

Zhang,

et al. 2024

Buildings

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Understanding the modification mechanism of C9 petroleum resin (C9PR) on styrene–butadiene–styrene (SBS) polymer modified asphalt properties is of significant importance. In this paper, dynamic shear rheometer (DSR), storage stability, fluorescence morphology (FM), scanning electron microscope (SEM), Fourier transform-infrared (FTIR) spectrometer, and molecular dynamic (MD) simulation were adopted to evaluate the rheological, chemical, and microstructure molecular motion state of C9PR and SBS composite modified asphalt at different aging states. The DSR storage results indicate that the addition of C9PR could improve the high-temperature property, storage stability, and temperature susceptibility. FM and SEM results indicate that the network microstructure was enhanced and the roughness between polymer resins and virgin asphalt was improved at the microscopic scale. The MD results indicate that the heterogeneity between C9PR and SBS modified asphalt was demonstrated, and the bonding energies were enhanced with the addition of C9PR. Moreover, the FTIR results indicate that new function groups were generated in addition to C9PR. In general, the addition of C9PR is a good approach to promote high-quality polymer modified asphalt (PMA) for pavement engineering.

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Modification mechanism of C9 petroleum resin and its influence on SBS modified asphalt

Cited by 23 publications

References 21 publications

Study on Properties and Micro-Mechanism of RHB-SBS Composite-Modified Asphalt

Study on Properties and Micro-Mechanism of RHB-SBS Composite-Modified Asphalt

Study on Adhesion Performance and Aging Strength Degradation Mechanism of SBS Modified Asphalt with Different Anti-Aging Additive

Evaluation of the Effect of C9 Petroleum Resin on Rheological Behavior, Microstructure, and Chemical Properties of Styrene–Butadiene–Styrene Modified Asphalt

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