Rheological changes in the bitumen caused by heating and interaction with rubber during asphalt–rubber production

Peralta, J.; Hilliou, L.; Silva, Hugo Manuel Ribeiro Dias da; Machado, A. V.; Williams, R. Christopher

doi:10.1007/s00397-013-0748-9

Cited by 9 publications

(4 citation statements)

References 34 publications

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“…The main goal of this part of the work is to clarify asphalt cognitive features in aspects of chemistry. To accomplish this objective, three specific parameters, including economic variables, traffic flow, and asphalt mixture, should be taken into account by developers [1]. The chemical composition in the mixed asphalt has its characteristics.…”

Section: Introductionmentioning

confidence: 99%

Impact of Chemical Properties Crumb Rubber with Different Waste Tire in Hot Mix Asphalt Design

et al. 2023

IJFMR

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The purpose of this research is to assess the impact of chemical properties of rubber crumbs for various types of waste tires mixed in design asphalt. This paper gives a scientific contribution of the chemical properties in relationship with the mix design asphalt. Many tires are replaced and dumped as waste in many parts of the world every year. This has created severe environmental problems such as pollution which governments of many nations spend a lot of budgets to manage every year. However, incorporating rubber crumbs as part of asphalt construction would help solve the environmental pollution problem in the world. The analysis is important because chemical properties such as Zn, Carbon, and Mg, have different characteristics that must be considered in making the best asphalt mix design. This would help to achieve alternate solutions. Furthermore, Utilizing XRD, FTIR, and TGA, the granules of several kinds of waste tire were examined. To achieve the best mix design for the asphalt, the results had many viewpoints. The TGA result demonstrated that all waste tires decomposed at the temperature of 500°C. However, the truck tire waste had the highest maximum thermal decomposition temperature of 587°C. The FTIR result showed that all the tire waste has similar chemical functional groups of polystyrene. The result of XRF showed that truck tire waste possesses the highest Zn content which is considered as dangerous element to the environment.

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Section: Introductionmentioning

confidence: 99%

Impact of Chemical Properties Crumb Rubber with Different Waste Tire in Hot Mix Asphalt Design

et al. 2023

IJFMR

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“…Rheological variations were determined to be related to bitumen aging due to the diffusion of bitumen molecules into rubber particles and the release of fillers from rubber into bitumen [ 11 ]. A comparison of the characteristic relaxation times showed that aging can’t fully explain rheological variations in the production of rubber bitumen binders.…”

Section: Introductionmentioning

confidence: 99%

Aging Process Effects on the Characteristics of Vacuum Residue Oxidation Products with the Addition of Crumb Rubber

et al. 2022

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This paper considers the effect of aging processes on viscoelastic characteristics of vacuum residue oxidation products modified with crumb rubber. Viscoelastic properties were compared to original bitumen raw material-vacuum residue and vacuum residue oxidation products during short-term and long-term aging. The complex shear modulus of the vacuum residue and its oxidation products decreased with an increase in temperature. Short-term aging resulted in increased shear modulus for all samples.The vacuum residue oxidation product modified with crumb rubber had the maximum values of the rutting parameter and fatigue parameter. There was an expansion of the temperature range of plasticity: for the vacuum residue oxidation product with crumb rubber, its value was 67.2 °C. The curves of the black diagram of the modified vacuum residue oxidation product are shifted towards smaller phase angles with the increase in the shear modulus, which indicates the increase in the stiffness and elasticity of the rubber bitumen binders. The vacuum residue oxidation product modified with crumb rubber corresponded to the rubber bitumen binder of the grade RBB 60/90, according to its physical and mechanical indicators.

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“…In addition, the carbon black in CR has an antioxidant effect that further improves the aging resistance of CR modified binder (6,7). Furthermore, CR particles may continue absorbing aromatic parts of the bitumen and swell during short-term aging conditions, which leads to improved elastic behavior of the modified binders (8). These mechanisms show the enhanced properties of CR modified binders during aging.…”

mentioning

confidence: 99%

Evaluating Aging Properties of Crumb Rubber and Styrene–Butadiene–Styrene Modified Binders

Naderi

Asgharzadeh

Tabatabaee

et al. 2014

Transportation Research Record: Journal of the Transportation R

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In recent years, one of the questions about modified binders has been the durability of their improved performance throughout their service life. Aging properties of modified binders in various frequency and temperature ranges depend on the class and concentration of the modifiers as well as the binder type. The aging characteristics have been evaluated in several ways, but the use of master curve models for modified binders has received little attention because of the lack of appropriate models with an easily manageable number of parameters. A recently developed mathematical model, Double Logistic (DL), can be used to characterize the master curves of modified binders. For the investigation of the rheological properties of aged and unaged modified binders, two modifiers, styrene–butadiene–styrene and ground tire rubber, were selected. Two binder types were selected to evaluate the binder dependency of the results. All modified binders were subjected to short- and long-term aging conditions in the laboratory. Then the rheological master curves of the complex modulus and phase angle of all the binders in various aging conditions were generated and fitted by the DL model. The model correctly predicted the phase angle plateau values and other irregularities for many polymer-modified binders in several aging conditions in this research. In addition, the DL model captured aging behaviors, such as hardening or softening, more elastic or viscous response, and lower or higher temperature susceptibility of the neat and polymer modified binders at various temperature and frequency ranges.

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Rheological changes in the bitumen caused by heating and interaction with rubber during asphalt–rubber production

Cited by 9 publications

References 34 publications

Impact of Chemical Properties Crumb Rubber with Different Waste Tire in Hot Mix Asphalt Design

Impact of Chemical Properties Crumb Rubber with Different Waste Tire in Hot Mix Asphalt Design

Aging Process Effects on the Characteristics of Vacuum Residue Oxidation Products with the Addition of Crumb Rubber

Evaluating Aging Properties of Crumb Rubber and Styrene–Butadiene–Styrene Modified Binders

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