Research on highly dissolved rubber asphalt prepared using a composite waste engine oil addition and microwave desulfurization method

Xu, Pei; Gao, Jiangping; Pei, Jianzhong; Chen, Zhen; Zhang, Jiupeng; Li, Rui

doi:10.1016/j.conbuildmat.2021.122641

Cited by 35 publications

(15 citation statements)

References 33 publications

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“…Zhou et al adopted virgin asphalt type 90 penetration grade for heavy traffic pavement in domestic use [82]. Some researchers [83] have used two types of neat binder penetration grades: 60/70 (PG and 85/100 (PG [56,70,84]. Xingyu et al selected PG 82-16 [85].…”

Section: Applicable Waste Materials On Rejuvenated Asphaltmentioning

confidence: 99%

“…Many researchers [54,76,84,87,97,98] prefer the radial grinding reducing treatment of WTR, in which mechanical forces are used to break down waste tire rubber at an ambient temperature. In the asphalt-rubberoil-rejuvenated binder, the WTR used was a 40-crumb rubber mesh, i.e., its size ranged from 0.0075 mm to 4.75 mm [56,62,65,68,75,76,78,79,87,99]. Lei et al used a particle size of 100 WTR crumb mesh [81,84].…”

Section: Waste Tire Rubber (Wtr)mentioning

confidence: 99%

“…Several researchers have examined the effect of using WCO with aged or nonaged asphalt [35,36] on its rheological and chemical properties [33,[37][38][39][40][41][42][43][44] and physical properties [41,[43][44][45]. WTR has also been investigated in several studies [46][47][48][49][50][51][52][53][54][55][56][57][58]. Moreover, various researchers have reviewed the effects of waste cooking oil on asphalt rejuvenation.…”

Section: Introductionmentioning

confidence: 99%

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Sustainable Asphalt Rejuvenation by Using Waste Tire Rubber Mixed with Waste Oils

Dong

2022

Sustainability

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Waste materials such as waste tire rubber (WTR), waste cooking oil (WCO), bio-oils, waste engine oil (WEO), and other waste oils have been the subject of various scientific studies in the sustainable and waste research field. The current environmental concerns have been identified to protect natural resources and reuse waste materials. Accordingly, this work reviews the use of recycled waste tire rubber mixed with waste oils (waste cooking oil, waste engine oil) and bio-oils that can be extracted from waste oils to rejuvenate asphalt in reclaimed pavements. This new solution may reduce the massive amounts of WTR and waste oils and produce a more environmentally sustainable material. Reclaimed, aged asphalt has been rejuvenated to achieve various penetration capabilities and properties by blending asphalt with one or more waste materials to evaluate the binder using standard tests. Many solutions with promising results in improving the properties of asphalt mixtures have been selected for further characterization. This review highlights that the addition of WTR and waste materials to rejuvenated asphalt binders improves stability, enhances the viscoelastic properties, provides better fatigue and crack resistance performance, and enhances the compatibility of the rejuvenated rubber oil asphalt. Moreover, the flashing point, softening point, ductility, and penetration of aged asphalt and Poly(styrene-butadiene-styrene)-rubber-rejuvenated and waste-rubber-oil-rejuvenated asphalt were enhanced after applying the rejuvenator compound. On the other hand, adding waste oil to WTR and asphalt reduces the viscosity and enhances the storage stability compared to the asphalt rubber binder.

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Section: Applicable Waste Materials On Rejuvenated Asphaltmentioning

confidence: 99%

Section: Waste Tire Rubber (Wtr)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sustainable Asphalt Rejuvenation by Using Waste Tire Rubber Mixed with Waste Oils

Dong

2022

Sustainability

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“…Rath et al investigated the effects of a chemically engineered dry-process ground tire rubber modification in bitumen and mixtures, and the cracking and rutting performance of all the field sections was good-to-excellent [ 20 , 21 ]. However, for wet-process modified rubber asphalt, because the crumb rubber powder used in ordinary crumb rubber modified asphalt was treated by a vulcanization process, it had a relatively solid three-dimensional network structure and low activity, which makes the crumb rubber powder difficult to be compatible in asphalt and often accompanied by a large number of crumb rubber particles [ 22 , 23 , 24 ]. The ordinary crumb rubber modified asphalt prepared from vulcanized crumb rubber powder has a series of shortcomings, such as poor high temperature storage stability, easy segregation, high viscosity, and difficult construction, which limits its development and application [ 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

“…The desulfurized crumb rubber modified asphalt has been proved to have good storage stability, low-temperature performance, and workability. In addition, the harmful gas emission of desulfurized crumb rubber modified asphalt is lower, thus it is more environmentally friendly [ 24 , 28 ]. Therefore, it is necessary to desulfurize and activate the vulcanized crumb rubber powder to improve the stability of crumb rubber modified asphalt.…”

Section: Introductionmentioning

confidence: 99%

Effect of Desulfurization Process Variables on the Properties of Crumb Rubber Modified Asphalt

Zhang

Zhang²,

Chen³

et al. 2022

Polymers

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A large number of waste tires are in urgent need of effective treatment, and breaking waste tires into crumb rubber powder for modifying asphalt has been proved as a good idea to solve waste tires. Crumb rubber modified asphalt not only has good high and low temperature performance, durability, and aging resistance but can also reduce pavement noise and diseases, which has wide application prospects. In this study, crumb rubber powder was desulfurized by mechanochemical method to prepare desulfurized crumb rubber modified asphalt. During the desulfurization process of crumb rubber, the effects of desulfurization process variables including desulfurizer type, desulfurizer content, and desulfurization mixing temperature and time were considered, and then the physical properties of modified asphalt were tested. The test results showed that after mixing crumb rubber powder with desulfurizer, the viscosity of crumb rubber powder modified asphalt can be reduced. Moreover, the storage stability of crumb rubber powder modified asphalt could also be improved by mixing crumb rubber with desulfurizer. Based on the physical properties of crumb rubber powder modified asphalt, the desulfurization process of selected organic disulfide (OD) desulfurizer was optimized as follows: the OD desulfurizer content was 3%, the desulfurization mixing temperature was 160 °C, and the mixing time was 30 min. In addition, Fourier infrared spectroscopy analysis was carried out to explore the modification mechanism of desulfurized crumb rubber powder modified asphalt. There is no fracture and formation of chemical bonds, and the modification of asphalt by crumb rubber powder is mainly physical modification.

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Recycling waste engine oil as a viscosity reducer for asphalt rubber: an insight from molecular dynamics simulations and laboratory tests

Zhao

Feng

et al. 2023

Environ Sci Pollut Res

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Research on highly dissolved rubber asphalt prepared using a composite waste engine oil addition and microwave desulfurization method

Cited by 35 publications

References 33 publications

Sustainable Asphalt Rejuvenation by Using Waste Tire Rubber Mixed with Waste Oils

Sustainable Asphalt Rejuvenation by Using Waste Tire Rubber Mixed with Waste Oils

Effect of Desulfurization Process Variables on the Properties of Crumb Rubber Modified Asphalt

Recycling waste engine oil as a viscosity reducer for asphalt rubber: an insight from molecular dynamics simulations and laboratory tests

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