Development and properties of new nanomodifiers for road pavement

Никольский, В.Г.; Dudareva, T. V.; Красоткина, И. А.; Zvereva, U. G.; Bekeshev, V. G.; Rochev, V.Ya.; Kaplan, A.M.; Chekunaev, N.I.; Vnukova, L. V.; Styrikovich, N.M.

doi:10.1134/s1990793114040071

Cited by 17 publications

(4 citation statements)

References 3 publications

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“…Rheological tests [ 15 ] also showed the efficiency of rubber particles as an effective modifier of bitumen binders for the preparation of asphalt concrete pavements designed for operation in various climatic zones under extreme loads.…”

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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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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“…High-temperature shear grinding (HTSG) of cross-linked rubbers and polymers leads to powdery particles with a fractal surface and macro-inhomogeneity of the particle shape [1]. A typical form of such powder particles is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Methodological Aspects of Evaluating the Particle Size Distribution of Powder Elastomeric Materials

Dudareva

Красоткина

Никольский

et al. 2021

KEM

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The properties of crumb rubber (CR) of unsorted end-of-life tires and of gas masks face part crushed at ambient temperature, as well as powder elastomeric materials (PEM) obtained by high-temperature shear grinding (HTSG) of CR and high-temperature shear co-grinding of CR with thermoplastic elastomer have been investigated. The methods of dry screening with vibrating sieve, wet laser diffraction, scanning electron microscopy, determination of the specific surface area by the BET method by sorption nitrogen and powder agglomeration were used. The effect of an anti-agglomerating additive on the results of determining the particle size distribution by the methods of dry vibrating sieving and wet laser diffraction has been investigated. Methodological recommendations for determining the particle size distribution of powder elastomeric materials (PEM) obtained by the HTSG have been developed.

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“…The most effective solution is to preactivate CR. Treatment methods of activate CR includes: microwave method, ultrasonic method, active gas method, biological desulfurization method and so on (Nikolskii et al, 2014;Torretta et al, 2015;Kedarisetty et al, 2016). Study found that most of the pre-treatment is not controlled or activation process is complicated (Shatanawi et al, 2009), such as: ultrasonic method will destroy the C-C bond which is a useful chemical bond inside the asphalt during the activation process.…”

Section: Introductionmentioning

confidence: 99%

Aging Properties and Mechanism of Microwave-Activated Crumb Rubber Modified Asphalt Binder

Zhou

et al. 2020

Front. Mater.

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Although crumb rubber modified asphalt (CRMA) has a better performance than matrix asphalt (MA) in road engineering, the application bottlenecks of this material lies in its high viscosity, poor workability and bad storage stability. Microwave technology is one of the solutions to the above problems. The objective of this study was to investigate the physical and chemical changes before and after aging of CRMA which was prepared by microwave activated crumb rubber, and the aging mechanism of microwave-activated crumb rubber modified asphalt (MACRMA). Through penetration, softening point, ductility, viscosity and DSR test, the high and low temperature performance and temperature sensitivity of MA, CRMA and MACRMA before and after aging were studied. These tests results revealed that microwave treatment can improve the anti-rutting ability and the anti-aging performance of rubber asphalt. According to gel permeation chromatography (GPC) test, the distribution changes of the internal molecular content of the three asphalts were determined during the aging process. Its test results showed that aging effect accelerated the conversion of small molecules to large molecules in asphalt, and the value of large molecular size (LMS) increases more after long-term aging. The microwave activation made the swelling reaction more intense, thereby delayed the conversion of LMS in the rubber asphalt. In addition, LMS has a high correlation with test indicators. The fourier transform infrared spectroscopy (FTIR) test was used to measure the functional group changes of each asphalt. The FTIR spectra indicated that microwave activation is mainly a process of physical change. The carbonyl and sulfoxide functional group indices of MACRMA were lower than those of MA and CRMA, which also confirmed that MACRMA has a better anti-aging ability.

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Development and properties of new nanomodifiers for road pavement

Cited by 17 publications

References 3 publications

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

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

Methodological Aspects of Evaluating the Particle Size Distribution of Powder Elastomeric Materials

Aging Properties and Mechanism of Microwave-Activated Crumb Rubber Modified Asphalt Binder

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