Effect of Carbon Black on Rutting and Fatigue Performance of Asphalt

Zhong, Kunzhi; Li, Zhi; Fan, Jianwei; Xu, Guangji; Huang, Xiaoming

doi:10.3390/ma14092383

Cited by 12 publications

(4 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Aging retardation by crumb rubber is due to the release of rubber components such as carbon black and silica; 116 carbon black absorbs the light components in asphalt and prevents the light components' volatilization throughout the aging process and reduce oxygen diffusion. 117,118 In addition, the light fractions of asphalt (maltenes) can be absorbed by crumb rubber to protect it from aging. 119,120 Silica's significant steric hindrance effect on asphaltene weakens the asphalt binder's intermolecular interaction and disrupts asphaltene agglomeration, and its release into asphalt prevents asphalt from longterm aging.…”

Section: Aging and Rejuvenation Of Rubberized Asphaltmentioning

confidence: 99%

“…Crumb rubber improves the rheology of asphalt binder and retards its aging. Aging retardation by crumb rubber is due to the release of rubber components such as carbon black and silica; carbon black absorbs the light components in asphalt and prevents the light components’ volatilization throughout the aging process and reduce oxygen diffusion. , In addition, the light fractions of asphalt (maltenes) can be absorbed by crumb rubber to protect it from aging. , Silica’s significant steric hindrance effect on asphaltene weakens the asphalt binder’s intermolecular interaction and disrupts asphaltene agglomeration, and its release into asphalt prevents asphalt from long-term aging. − Moreover, stronger interactions between crumb rubber and asphalt are associated with improved rubberized asphalt aging resistance. , This improvement is due to delays in the volatilization and transformation of asphalt’s lightweight components and the hindrance the rubber network places to the intrusion of oxygen molecules, delaying the oxidation of polar groups in asphalt modified by crumb rubber. , Figure shows the influence of crumb rubber on two long-term aging metrics of asphalt; carbonyl and sulfoxide indexes . The optimum aging resistance, as evidenced by the lowest carbonyl and sulfoxide indices, is associated with 15 wt.…”

Section: Aging and Rejuvenation Of Rubberized Asphaltmentioning

confidence: 99%

See 1 more Smart Citation

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

Kazemi,

Parikhah Zarmehr,

Yazdani

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

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.

show abstract

Section: Aging and Rejuvenation Of Rubberized Asphaltmentioning

confidence: 99%

Section: Aging and Rejuvenation Of Rubberized Asphaltmentioning

confidence: 99%

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

Kazemi,

Parikhah Zarmehr,

Yazdani

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…The main methods for solving the segregation phenomenon are adding compatibilizers and pretreatment of the plastic modifiers. The choices of compatibilizers include furfural oil, 15 maleic anhydride graft copolymer, 16 silicone oil, 17 carbon black, 18 and so forth. However, some of the compatibilizers have negative effects on the performances of asphalt.…”

Section: Introductionmentioning

confidence: 99%

Reutilization of crystalline waste plastics for modified asphalt using twin‐screw extrusion: Polyethylene and polypropylene as typical subjects

Jia

Yang

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

The key technologies for waste plastic modified asphalt were storage stability and low temperature performance. In order to reutilize waste plastics for modified asphalt, a simple strategy, which based on recrystallization of the waste plastics, was proposed in this article. It was found that the pretreated waste plastics had higher crystallinity and smaller crystal size. Moreover, the deformation resistance and stability of the modified asphalt were improved. In addition, a rational mechanism called “polymer crystals confinement effect” was proposed to reveal the intrinsic correlation between the properties of crystalline waste plastics and modified asphalt.

show abstract

“…This addition increases bitumen stiffness, durability against cracking, and resistance to rut formation at varying temperatures. Previous studies have indicated that incorporating 5-15% carbon black into asphalt concrete can boost wear resistance by up to 30%, particularly at higher temperatures [25,26].…”

mentioning

confidence: 99%

Recycling of Low-Quality Carbon Black Produced by Tire Pyrolysis

Rikmann,

Mäeorg,

Liiv

2024

Applied Sciences

View full text Add to dashboard Cite

Pyrolysis is a promising way to reuse of waste tires. However, the carbon black generated in the process is often contaminated with various pyrolysis products. This study aims to recycle low-quality recycled carbon black (rCB) from waste tire pyrolysis, addressing the challenges posed by organic residues (up to 5 wt% bituminous substances, 112.2 mg/kg PAH). This causes the agglomeration of particles and decreases the active specific surface area. Cavitational vortex milling (both wet and dry) emerges as a promising method to valorize contaminated rCB, allowing for a significant reduction in the concentration of contaminants. This novel method allows for the generation of hydrophilic and hydrophobic black pigments. In parallel experiments, low-quality rCB is incorporated into solid biofuel to enhance its calorific value. The addition of 10 wt% rCB) to peat residues significantly elevates the calorific value from 14.5 MJ/kg to 21.0 MJ/kg. However, this improvement is accompanied by notable increases in CO2 and SO2 emissions. This dual effect underscores the necessity of considering environmental consequences when utilizing recycled carbon black as a supplement to solid biofuels. The findings provide valuable insights into the potential of cavitational vortex milling for carbon black valorization and highlight the trade-offs associated with enhancing biofuel properties through the addition of rCB.

show abstract

Effect of Carbon Black on Rutting and Fatigue Performance of Asphalt

Cited by 12 publications

References 35 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

Reutilization of crystalline waste plastics for modified asphalt using twin‐screw extrusion: Polyethylene and polypropylene as typical subjects

Recycling of Low-Quality Carbon Black Produced by Tire Pyrolysis

Contact Info

Product

Resources

About