Characterization of Bitumen Modified with Pyrolytic Carbon Black from Scrap Tires

Wang, Haopeng; Lü, Gongxuan; Feng, Shuyin; Wen, Xianfei; Yang, Jun

doi:10.3390/su11061631

Cited by 37 publications

(16 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A separation index to characterize the storage stability can be formulated in two forms: firstly, in a ratio form (ratio of a rheological property of the top to bottom segment of cigar tube test, the first column of Table 1) and secondly in a maximum-average difference form (abbreviated as 'max-avg', the second column of Table 1). In some studies, the separation index has been reported in the ratio form [39,40], whereas others have used the max-avg form [44][45][46]. Comparison based on the form of the index would be helpful to understand if the method of formulation of a separation index affects the ranking of binders concerning their storage stability.…”

Section: Separation Indicesmentioning

confidence: 99%

Characterization of thermal storage stability of waste plastic pyrolytic char modified asphalt binders with sulfur

2021

View full text Add to dashboard Cite

Pyrolysis has gained a strong interest in recent times for sustainable treatment and recovery of energy-rich products from different wastes including plastic. Waste plastic pyrolytic char (PPC) generated as a carbonaceous by-product in the pyrolysis process, is gaining attention as an asphalt binder modifier. Adequate thermal storage stability is an essential requirement for a modified asphalt binder to ensure that the composite offers integrity and homogeneous properties during its storage, handling and transportation in the field. The objective of this study was to evaluate and characterize the thermal storage stability properties of PPC modified binders. PPC modified asphalt binders were fabricated and evaluated at multiple dosages of sulfur as a cross-linking agent. In addition to the conventionally used softening point difference (SPD), characterization of thermal storage stability was attempted using rheology-based separation indices (SIs) derived through temperature sweep, frequency sweep, and multiple stress creep and recovery (MSCR) tests. These rheological SIs were based on complex modulus (G*), Superpave rutting parameter (G*/sin δ), Shenoy rutting parameter (SRP), zero shear viscosity (ZSV), and MSCR Jnr (at three stress levels 0.1, 3.2 and 10 kPa). Two formulations of each rheology-based separation index were studied: (1) ratio, and (2) maximum-average difference formulations. The temperature and frequency dependencies of rheological SIs were also evaluated. Further, the Fourier transform infrared spectroscopy (FTIR) was used to characterize storage stability by comparing the chemical functionalities of the PPC modified binders. A 0.3% dosage of sulfur was found to produce the best results considering all SPD, rheology-based SIs and FTIR. Principal component analysis showed that the ratio and maximum-average formulations had similar contributions to the first principal component accounting for more than 99% of the variability.

show abstract

Section: Separation Indicesmentioning

confidence: 99%

Characterization of thermal storage stability of waste plastic pyrolytic char modified asphalt binders with sulfur

2021

View full text Add to dashboard Cite

show abstract

“…Carbon black possesses many unique properties that distinguish it from other conventional modified: it has a large specific surface area, irregular shapes and various functional groups. Related research has proved that carbon black had good compatibility and a reinforcement effect on asphalt binders, and decreased the resistivity of asphalt [26]. In this paper, carbon black was obtained from Jiangxi black cat carbon black Co, Ltd. (Jiangxi, China).…”

Section: Asphalt Sample Preparationmentioning

confidence: 99%

Laboratory Assessment of Deteriorating Performance of Nano Hydrophobic Silane Silica Modified Asphalt in Spring-Thaw Season

Guo

Chen

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

In the seasonal frozen regions, freeze-thaw (F-T) damage is the main pavement damage, causing a variety of poor conditions in bitumen pavement, such as cracks, pits, potholes, and slush. In previous studies, we evaluated the effect of nano hydrophobic silane silica (NHSS) on the degradation of asphalt mixture under F-T cycles, and established the damage model of NHSS modified asphalt mixture in spring-thawing season. To gain more understanding of the influence of NHSS on asphalt in spring-thawing season, NHSS modified asphalt was systematically analyzed under F-T aging process in this study. The main research objective of this paper was to investigate the deteriorating properties of NHSS modified asphalt under Freeze-thaw aging process. Within this article, the physicochemical characteristics of NHSS modified asphalt were determined by using various laboratory tests, which included basic property test, dynamic shear rheometer test (DSR), Fourier transform infrared spectroscopy test (FTIR) and thermogravimetric analysis (TGA). The results showed that the incorporation of NHSS could inhibit the F-T aging process of asphalt. Moreover, the chemical composition and thermal stability of asphalt under F-T aging process was analyzed through FITR and TGA test parameters. The results illustrated that the sulfoxide functional groups content index was more suitable for evaluating the aging degree of asphalt in the spring-thawing season and the F-T aging process had a great impact on the thermal property of NHSS modified asphalt.

show abstract

“…To make the polymer modification method more economically viable, it is possible to use waste polymers [24,25], or carbon-based by-products such as carbon black (CB) that is obtained from the incomplete combustion of heavy petroleum products [26]. CB not only is a good candidate for improving the rutting resistance, but also it imparts anti-aging properties to asphalt binder [27][28][29] and improves the physical and rheological behavior of asphalt binder [30,31].…”

Section: Introductionmentioning

confidence: 99%

Investigating the high-temperature performance and activation energy of carbon black-modified asphalt binder

et al. 2020

View full text Add to dashboard Cite

This study set out to evaluate the influence of carbon black (CB) on the rheological properties and activation energy of asphalt binder at high service temperatures. The rheological performance of virgin and modified asphalt binders are investigated using three evaluation approaches: (1) Superpave specification parameter (G*/sinδ), (2) multiple stress creep recovery (MSCR) test, and (3) interaction model for computing zero shear viscosity (ZSV). Moreover, the Arrhenius model was used to quantify the activation energy (E f ) of virgin and CB-modified asphalt binders. The result of this study reveals that modifying asphalt binder with up to 10% of CB, by weight of the total asphalt binder, enhances the elastic behavior (R%) and decreases the non-recoverable creep compliance (J nr ) of asphalt binder at high temperatures. Moreover, according to this study, the ZSV index can describe successfully rutting resistance of asphalt binder when compared with MSCR and Superpave rutting specification parameter. Besides, it was indicated that CB-modified asphalt binder has a high fluid resistance as more thermal energy was required for overcoming intermolecular force between molecules.

show abstract

Characterization of Bitumen Modified with Pyrolytic Carbon Black from Scrap Tires

Cited by 37 publications

References 23 publications

Characterization of thermal storage stability of waste plastic pyrolytic char modified asphalt binders with sulfur

Characterization of thermal storage stability of waste plastic pyrolytic char modified asphalt binders with sulfur

Laboratory Assessment of Deteriorating Performance of Nano Hydrophobic Silane Silica Modified Asphalt in Spring-Thaw Season

Investigating the high-temperature performance and activation energy of carbon black-modified asphalt binder

Contact Info

Product

Resources

About