Studying the Properties of SBS/Rice Husk Ash‐Modified Asphalt Binder and Mixture

Lu, Zheng; Sha, Aimin; Wang, Wentong; Gao, Junfeng

doi:10.1155/2020/4545063

Cited by 8 publications

(7 citation statements)

References 34 publications

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“…In summary, a similar analysis of biochar and other biomass carbon material has been reported by other researchers in terms of the high- and low-temperature performance. Previous studies revealed that biochar with a porous fibrous structure can enhance the high-temperature performance of asphalt [ 24 , 25 ], which would slightly impair the low-temperature performance [ 15 ].…”

Section: Resultsmentioning

confidence: 99%

“…RHA and matrix asphalt can form a stable three-dimensional network system, which is conducive to improving the high-temperature deformation resistance and bonding properties of asphalt. Lu et al [ 15 ] selected different contents of RHA and 1% SBS to prepare modified asphalt and conducted a series of macro tests on asphalt and asphalt mixture. The results showed that the high-temperature performance of the RHA and SBS composite-modified asphalt mixture was better, and the water stability and low-temperature performance were slightly lower, compared with the matrix asphalt.…”

Section: Introductionmentioning

confidence: 99%

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Study on Properties and Micro-Mechanism of RHB-SBS Composite-Modified Asphalt

Chen

Shi

et al. 2023

Polymers

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Rice husk biochar (RHB) is a renewable agricultural waste, and its fixation on pavements helps develop environmentally friendly, economical, and sustainable asphalt pavements. This paper used RHB to replace part of styrene-butadiene-styrene (SBS) for the composite modification study of matrix asphalt. The high- and low-temperature properties and microscopic mechanisms of the composite-modified asphalt were studied through a series of tests. The results showed that, compared with SBS-modified asphalt, the softening point, viscosity, complex shear modulus, stiffness modulus, and rutting factors of RHB-SBS composite-modified asphalt were improved. In contrast, the ductility and creep rate were slightly decreased, indicating an improvement in the high-temperature performance of composite-modified asphalt, but a slight decrease in its low-temperature performance. The process of RHB and SBS composite modification was mainly physical blending, with only a small number of chemical reactions, and no new functional groups were generated. The porous structure of RHB enables it to adhere better to the network crosslinked continuous phase system formed by SBS and matrix asphalt. This results in composite-modified asphalt with good high-temperature storage stability and rheological properties. Therefore, RHB-SBS composite-modified asphalt can be applied to high-temperature areas and rice-producing areas, and the optimal content of RHB is suggested to be 15%.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on Properties and Micro-Mechanism of RHB-SBS Composite-Modified Asphalt

Chen

Shi

et al. 2023

Polymers

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“…Al estudiar al ligante asfáltico con base de penetración 70 y al bioasfalto con 2, 5, 10 y 15% de ceniza de cáscara de arroz más 1% de estireno-butadieno-estireno, pues se obtuvo que el aditivo mejoró el punto de reblandecimiento de la ligante virgen de 48.2 °C, aumentando un 4.7%, 6.0%, 8.3% y 9.3% respectivamente, mejorando la capacidad a la deformación a altas temperaturas [73].…”

Section: Punto De Reblandecimientounclassified

Revisión sistemática del comportamiento convencional y reológico del biocompuesto asfalto-biomasas producidas

2023

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La ingeniería de pavimentos, busca con ahínco materiales no petrolíficos como sustituyentes/mejoradores del asfalto. La producción de bioasfalto con biomasa es la técnica más usual con beneficios económicos, sociales y medioambientales. Este documento tiene como objetivo realizar una revisión literaria del mejoramiento del asfalto con biomasa en subproductos de biocarbón o bioaceite. Se efectuó una revisión de 80 artículos científicos, los cuales estudiaron las propiedades convencionales y reológicas del asfalto con porcentajes óptimos de adición de biomodificadores, considerándolos como nuevas tecnologías en las construcciones viales. Los resultados muestran que la dosis y tipo del biomaterial influye mucho como modificador, dado que el rendimiento del bioasfalto a base de biomasa garantiza reacciones positivas con una mínina adición de 1% de aceite de palma hasta 100% de ceniza de madera como máximo. En conclusión, a mayor dosis de biomodificador a altas temperaturas mayor es la mejora en la viscosidad, estabilidad, grado de penetración, punto de reblandecimiento, resistencia a la tracción indirecta, módulo de resistencia, resistencia a la deformación, resistencia a la fatiga, resistencia al deslizamiento y resistencia a la humedad del asfalto, además de tener mejores condiciones de envejecimiento oxidativo, pues generalmente el ligante asfáltico es compatible con la mayoría de los biomateriales, siendo viable como fuente de energía renovable, sostenible y de calidad.

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“…The studies conducted so far [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] have revealed that bio-ash considerably varies as to its composition and properties, depending on the origin of the biomass, biomass handling, and the combustion technology and temperature. The wide range of compositions and properties of bio-ash requires the testing of individual sources with the purpose of determining the possibility of using bio-ash in road construction as a substitute for traditional materials.…”

Section: Introductionmentioning

confidence: 99%

Contribution to the Research on the Application of Bio-Ash as a Filler in Asphalt Mixtures

Šimun,

Dimter,

Grubješić

et al. 2023

Applied Sciences

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The intensive construction of all categories of roads and the very demanding maintenance of the pavement structures of existing roads due to ever-increasing traffic loads confronts us with a lack of resources and also an increase in cost for the constituent materials of asphalt mixtures. On the other hand, there is another problem: large amounts of waste material in the form of bio-ash, which is obtained by burning waste wood biomass in the production of thermal energy and/or electricity. In order to solve the environmental problem of bio-ash disposal, research was conducted on the use of waste bio-ash as a constituent material in asphalt pavements. As part of this study, the effect of asphalt concrete mix, with bio-ash as a filler, on the release of harmful substances into the environment was investigated. The possibility of using wood bio-ash (BA) as a filler in asphalt mixtures was then determined through physical and mechanical property tests. The properties of the asphalt sample’s sensitivity to the action of water (indirect tensile strength ratio—ITSR) and resistance to rutting were tested for asphalt concrete type AC 11 surf with 50% bio-ash in the filler. It was established that asphalt concrete does not release harmful substances into the environment and that the 50% share of bio-ash in the filler results in asphalt that has good resistance to water sensitivity and even greater resistance to rutting.

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Studying the Properties of SBS/Rice Husk Ash‐Modified Asphalt Binder and Mixture

Cited by 8 publications

References 34 publications

Study on Properties and Micro-Mechanism of RHB-SBS Composite-Modified Asphalt

Study on Properties and Micro-Mechanism of RHB-SBS Composite-Modified Asphalt

Revisión sistemática del comportamiento convencional y reológico del biocompuesto asfalto-biomasas producidas

Contribution to the Research on the Application of Bio-Ash as a Filler in Asphalt Mixtures

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