Laboratory evaluation of the properties of high-cured crumb rubber modified asphalt containing sulfur and polymer after the oxidative aging procedure

Wang, Sheng; Huang, Weidong; Kang, Aihong

doi:10.1016/j.conbuildmat.2021.124611

Cited by 17 publications

(21 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the reconstruction of HCRA's cross‐linked networks through dynamic vulcanization becomes more significant. The δ of HCRA is less than 53°, showing that HCRA has an excellent elasticity 18,19 …”

Section: Resultsmentioning

confidence: 99%

“…Carbonyl growth is an evaluation indicator of the oxidative aging of rubber asphalt 15 . However, it was found that sulfur can retard the growth of carbonyl groups of rubber asphalt in another study 19 …”

Section: Introductionmentioning

confidence: 94%

“…The addition of sulfur in rubber asphalt has been reported to ensure uniform dispersion of rubber in asphalt with acceptable high‐temperature properties 15–19 . Morrison et al 17 first used in situ vulcanization grafting in rubber asphalt to improve the high‐temperature properties and low‐temperature fracture toughness of rubber asphalt.…”

Section: Introductionmentioning

confidence: 99%

“…The addition of sulfur in rubber asphalt has been reported to ensure uniform dispersion of rubber in asphalt with acceptable high-temperature properties. [15][16][17][18][19] Morrison et al 17 first used in situ vulcanization grafting in rubber asphalt to improve the high-temperature properties and low-temperature fracture toughness of rubber asphalt. They suggested that the increase in molecular weight of rubber during vulcanization leads to the improvement of low-temperature toughness.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of dynamic vulcanization on the performance of high content rubber modified asphalt

Zhang

Yang

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

High content rubber modified asphalt (HCRA) is usually prepared with devulcanized rubber (DR) in asphalt with good workability. However, the high‐temperature properties of HCRA deteriorate simultaneously. In this study, dynamic vulcanization approach was adopted to improve the high‐temperature properties of HCRA without mitigating the workability and low‐temperature performance of modified binder blends. The dynamic vulcanization process and mechanism were investigated based on the gel content, related chemical reactions, morphology, rheological behavior, and tensile properties of HCRA. The occurrence of dynamic vulcanization was confirmed by the increase in gel content. Fourier transform infrared spectroscopy reflected that CC bonds in trans‐olefins participated in dynamic vulcanization, followed by the reaction of those in conjugated olefins. Optical microscopy tests showed that dynamic vulcanization also improved the compatibility between the DR and asphalt. It was found that dynamic vulcanization of HCRA is the gradual stabilization process to form local cross‐linked networks in asphalt. With the addition of sulfur, degradation, aging, and dynamic vulcanization took place simultaneously in HCRA. Dynamic vulcanization increased the high‐temperature properties, fracture toughness, as well as storage stability of HCRA. Furthermore, dynamic vulcanization restricted rubber degradation and improved the aging behavior of HCRA.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of dynamic vulcanization on the performance of high content rubber modified asphalt

Zhang

Yang

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…[ 1 , 2 , 3 ]. The cracks on the pavement could induce the stress concentration phenomenon in the asphalt mixtures [ 4 , 5 , 6 ], which could accelerate the destruction of the pavement structure, and impose a severe impact on the driving experience [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Fiber Diameter on Crack Resistance of Asphalt Mixtures Reinforced by Basalt Fibers Based on Digital Image Correlation Technology

et al. 2021

View full text Add to dashboard Cite

It is now more popular to use basalt fibers in the engineering programs to reinforce the crack resistance of asphalt mixtures. However, research concerning the impact of the basalt fiber diameter on the macro performance of AC-13 mixtures is very limited. Therefore, in this paper, basalt fibers with three diameters, including 7, 13 and 25 μm, were selected to research the influences of fiber diameter on the crack resistance of asphalt mixtures. Different types of crack tests, such as the low temperature trabecular bending test (LTTB), the indirect tensile asphalt cracking test (IDEAL-CT), and the semi-circular bend test (SCB), were conducted to reveal the crack resistance of AC-13 mixtures. The entire cracking process was recorded through the digital image correlation (DIC) technique, and the displacement cloud pictures, strain, average crack propagation rate (V) and fracture toughness (FT) indicators were used to evaluate the crack inhibition action of the fiber diameter on the mixture. The results showed that the incorporation of basalt fiber substantially improved the crack resistance, slowed down the increase of the displacement, and delayed the fracture time. Basalt fiber with a diameter of 7 μm presented the best enhancement capability on the crack resistance of the AC-13 mixture. The flexibility index (FI) of the SCB test showed a good correlation with V and FT values of DIC test results, respectively. These findings provide theoretical advice for the popularization and engineering application of basalt fibers in asphalt pavement.

show abstract

Aging properties of poly(vinyl chloride)-based blends, interpenetrating polymer networks, and gels

Karakuş,

Özeroğlu,

Kahyaoğlu

et al. 2024

Poly(vinyl Chloride)-Based Blends, IPNs, and Gels

View full text Add to dashboard Cite

Laboratory evaluation of the properties of high-cured crumb rubber modified asphalt containing sulfur and polymer after the oxidative aging procedure

Cited by 17 publications

References 24 publications

Effect of dynamic vulcanization on the performance of high content rubber modified asphalt

Effect of dynamic vulcanization on the performance of high content rubber modified asphalt

Effects of Fiber Diameter on Crack Resistance of Asphalt Mixtures Reinforced by Basalt Fibers Based on Digital Image Correlation Technology

Aging properties of poly(vinyl chloride)-based blends, interpenetrating polymer networks, and gels

Contact Info

Product

Resources

About