Research on the Viscosity-Temperature Properties and Thermal Stability of Stabilized Rubber Powder Modified Asphalt

Ma, Qiang; Guo, Zhongyin; Ping, Guo; Yang, Fayong; Li, Haibin

doi:10.3390/su132413536

Cited by 6 publications

(3 citation statements)

References 14 publications

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“…This approach can use up to 30 wt. % rubber without compromising the performance of the asphalt . Low-temperature devulcanized crumb rubber also reduces the moisture susceptibility of hot-mix asphalt and enhances its resistance to rutting, cracking, and fatigue, showing promise to rival styrene–butadiene–styrene as the most common polymer for asphalt modification …”

Section: Rubber Treatment Technologiesmentioning

confidence: 99%

Review and Perspectives of End-of-Life Tires Applications for Fuel and Products

Kazemi,

Parikhah Zarmehr,

Yazdani

et al. 2023

Energy Fuels

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Applications of end-of-life tires (ELT) for energy recovery and new products can contribute to a circular economy. This paper reviews the environmental, health, and economic aspects of various applications of ELT, focusing specifically on the use of ELT in fuel, energy, and construction. Impediments to a more widespread application of repurposed ELT include a lack of streamlined handling and recycling processes; a poor understanding of the long-term ecological, human health, and safety consequences; and very few application-specific techno-economic assessments and life-cycle analyses. The prospects for rubberized asphalt as an economical and environmentally benign application of ELT are reviewed in four areas: (1) rubber pretreatmentthe most effective techniques are chemical or microwave radiation, and the most sustainable technique is microbial devulcanization; (2) aging behaviorrubber particles delay aging in asphalt through several mechanisms; (3) techno-economic benefitsrubberized asphalt improves the cost-efficiency and energy-efficiency of asphalt; and (4) environmental emissions and leakage concernsthe risk of heavy metals and hazardous pollutants such as polycyclic aromatic hydrocarbons and volatile organic compounds contaminating the ecosystem or causing occupational diseases in workers. There are four priority directions for future research on rubberized asphalt: (1) determine the critical aging point; (2) describe the self-rejuvenating behavior; (3) quantify the long-term leachate under extensive weathering; and (4) compare the ecological aspects of pretreatment techniques in terms of potential greenhouse gas emissions and human health.

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Section: Rubber Treatment Technologiesmentioning

confidence: 99%

Review and Perspectives of End-of-Life Tires Applications for Fuel and Products

Kazemi,

Parikhah Zarmehr,

Yazdani

et al. 2023

Energy Fuels

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“…e SBS powder and desulfurized rubber powder were also determined to be crosslinked after aging, which further improved ductility and aging resistance. Ma et al [25] developed modified asphalt with stable rubber powder and found that its storage stability was effectively improved, and after that, the modification mechanism was analyzed.…”

Section: Introductionmentioning

confidence: 99%

Research on Rheological Properties by Desulfurized Rubber Powder/SBS Composite-Modified Asphalt and Road Performance of Its Mixture

Ping

et al. 2022

Advances in Materials Science and Engineering

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Desulfurized rubber powder and SBS were used as asphalt modifiers to study the rheological properties and performance of desulfurized rubber powder/SBS composite-modified asphalt (DR/SBSCMA). First, the basic performance indicators such as penetration, ductility, softening point, and viscosity were studied. Second, the high-temperature and low-temperature rheological properties of asphalt were evaluated by using a dynamic shear rheometer (DSR) and bending beam rheometer (BBR). Finally, their high-temperature stability, low-temperature crack resistance, and water stability under the gradation of AC-13 and SMA-13 were evaluated. The results show that DR/SBSCMA had great advantages in terms of ductility and softening point, especially the softening point, which reached 90°C. It also demonstrated excellent high-temperature performance and tensile strength, and penetration was slightly lower than that of SBS-modified asphalt. Moreover, after compound modification, high-temperature and low-temperature rheological properties were effectively improved, and DR/SBSCMA adequately met the requirements of PG82-34. In addition, DR/SBSCMA maintained excellent high-temperature stability in both AC-13 and SMA-13 mixtures, coupled with obvious improvements in rutting deformation. Meanwhile, its low-temperature cracking resistance is slightly lower than that of SBS-modified asphalt, but both adequately meet the specification requirements. Ultimately, the water stability of DR/SBSCMA is comparable to that of SBS-modified asphalt, with both reaching more than 90%, proving its excellent water stability.

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“…Relevant students have done a great deal of analysis to explore more practical analysis strategies of asphalt performance at high and coldness. For example, Ma (2019) analyzed the rheological properties of styrene ethylene butylene styrene (SEBS/)rubber powder composite changed asphalt by dynamic shear rheological take a look at in frequency and temperature scanning mode and studied its high temperature performance through multi-stress creep recovery take a look at. Dou (2014) administered temperature and frequency scanning tests on the high-viscosity modified asphalt with totally different indefinite quantity through dynamic shear rheometer.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis on rheological characteristics of different modified asphalt based on DSR and BBR evaluation

Sun

2021

JEDT

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Purpose In order to evaluate the rheological properties of asphalt more comprehensively and effectively, and to explore and discuss the practicability of relevant models in the evaluation of the rheological properties of asphalt. Design/methodology/approach Based on the rheological and viscoelastic theories, temperature scanning, frequency scanning and multiple stress creep recovery (MSCR) tests of different modified asphalt were carried out by dynamic shear rheometer (DSR) to obtain relevant viscoelastic parameters and evaluate the high temperature properties of different modified asphalt. Based on the time-temperature equivalence principle, the main curve was constructed to study the viscoelastic properties of asphalt in a wider frequency domain. The main curve was fitted with the CAM model, and the rheological properties of different modified asphalt were evaluated through the analysis of model parameters. The creep stiffness and creep velocity of different modified asphalt were obtained through the rheological test of bending beam (BBR), and the low-temperature performance of different modified asphalt was analyzed by using Burgers model to fit the creep compliance. Findings The results show that the high temperature rheological properties of several modified asphalt studied in the test are ranked from best to worst as follows: PE modified asphalt > SBS modified asphalt > SBR modified asphalt. Short-term aging can improve the high temperature performance of asphalt, and different types of modifiers can promote or inhibit this improvement effect. Based on BBR test and Burgers model fitting analysis, SBR modified asphalt has the best low temperature performance, followed by SBS modified asphalt, while PE modified asphalt has poor low temperature performance, so it is not suitable to be used as road material in low temperature area. Originality/value Combined with effective evaluation methods, the rheological properties of asphalt at different temperatures and angles were systematically evaluated, and the evolution of rheological properties of asphalt characterized by model parameters was further analyzed by advanced model simulation.

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Research on the Viscosity-Temperature Properties and Thermal Stability of Stabilized Rubber Powder Modified Asphalt

Cited by 6 publications

References 14 publications

Review and Perspectives of End-of-Life Tires Applications for Fuel and Products

Review and Perspectives of End-of-Life Tires Applications for Fuel and Products

Research on Rheological Properties by Desulfurized Rubber Powder/SBS Composite-Modified Asphalt and Road Performance of Its Mixture

Comparative analysis on rheological characteristics of different modified asphalt based on DSR and BBR evaluation

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