Laboratory investigation of graphene modified asphalt efficacy to pavement performance

Polaczyk, Pawel; Weaver, Sam C.; Ma, Yuetan; Zhang, Miaomiao; Jiang, Xi; Huang, Baoshan

doi:10.1080/14680629.2023.2181013

Cited by 7 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where m x is the theoretical dosage of fiber in the asphalt mixture, g; γ f is the asphalt mixture gross volume relative density, g/cm 3 ; and V f is the theoretical volume of the asphalt mixture, calculated from the dimensions, cm 3 .…”

Section: Test Of Effective Fiber Oil Absorption Ratementioning

confidence: 99%

“…With the rapid development of the economy, there are higher requirements for the functionality of asphalt pavement. The incorporation of fiber materials could improve the road performance of the asphalt mixture [1][2][3][4][5][6][7][8]. Stone Mastic Asphalt (SMA) is a typical gap-graded asphalt mixture, which is widely used because of its excellent high-temperature stability, lowtemperature crack resistance and water stability [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Research on Basalt Fiber Oil/Asphalt Absorption Performance and Test Methods Suitable for Asphalt Mixture with Different Structures

Shi,

Wang,

Sun

et al. 2024

Coatings

View full text Add to dashboard Cite

A basalt fiber asphalt mixture could improve the road performance of pavements and prolong the service life. The oil/asphalt absorption capacity of basalt fiber affects the road performance of asphalt mixtures to a certain extent. However, using kerosene as the medium to measure the oil absorption rate of bundle fibers by the vibration method, as the Chinese specifications recommends, is unreasonable. Therefore, the aim of this paper is to study the effect of the basalt fiber morphology on the oil absorption rate and the oil/asphalt absorption test methods suitable for asphalt mixtures with different structures (dense-graded and gap-graded), and to also explore the appropriate method to determine the oil/asphalt absorption rate of fiber to kerosene and asphalt. The results showed that the filamentous basalt fiber (FBF) was easier to disperse uniformly in asphalt than the bundled basalt fiber (BBF), and the oil absorption capacity of the FBF could more accurately characterize the actual working state of the fiber in the asphalt mixture. For the gap-graded asphalt mixture, the appropriate method to measure the fiber oil absorption rate is the combination of the vibration and centrifugation methods, while the fiber asphalt absorption rate is measured by the vibration method. For the dense-graded asphalt mixture, the combination of the extrusion and centrifugation methods are more reasonable to determine the fiber oil absorption rate, while the extrusion method is suitable for determining the fiber asphalt absorption rate. The concept of an effective fiber oil absorption rate is proposed to characterize the ability of fiber to adsorb kerosene in asphalt mixtures with different structures. A temperature of 160 °C is recommended as the test temperature to determine the fiber asphalt absorption rate. Kerosene as the asphalt absorption test medium could not directly reflect the ability of fiber to adsorb asphalt.

show abstract

Section: Test Of Effective Fiber Oil Absorption Ratementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Basalt Fiber Oil/Asphalt Absorption Performance and Test Methods Suitable for Asphalt Mixture with Different Structures

Shi,

Wang,

Sun

et al. 2024

Coatings

View full text Add to dashboard Cite

show abstract

“…At present, modified asphalt technologies, such as SBS modification, rubber powder modification, graphene modification, and composite modification have been rapidly developed. Modified asphalt technology can improve the water damage resistance, as well as the high and low temperature performances of asphalt [6][7][8]; however, there are still issues regarding temperature stability and durability [9,10]. Epoxy asphalt has the characteristics Polymers 2023, 15, 2327 2 of 18 of a thermosetting material, with excellent strength, stiffness, durability, and temperature stability, but there are limitations in terms of its high price, harsh construction conditions, and insufficient toughness [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Preparation Scheme Optimization of Thermosetting Polyurethane Modified Asphalt

Sun

Jing

Weng³

et al. 2023

Polymers

View full text Add to dashboard Cite

To solve the issue of the poor temperature stability of conventional modified asphalt, polyurethane (PU) was used as a modifier with its corresponding curing agent (CA) to prepare thermosetting PU asphalt. First, the modifying effects of the different types of PU modifiers were evaluated, and the optimal PU modifier was then selected. Second, a three-factor and three-level L9 (33) orthogonal experiment table was designed based on the preparation technology, PU dosage, and CA dosage to prepare the thermosetting PU asphalt and asphalt mixture. Further, the effect of PU dosage, CA dosage, and preparation technology on the 3d, 5d, and 7d splitting tensile strength, freeze-thaw splitting strength, and tensile strength ratio (TSR) of the PU asphalt mixture was analyzed, and a PU-modified asphalt preparation plan was recommended. Finally, a tension test was conducted on the PU-modified asphalt and a split tensile test was performed on the PU asphalt mixture to analyze their mechanical properties. The results show that the content of PU has a significant effect on the splitting tensile strength of PU asphalt mixtures. When the content of the PU modifier is 56.64% and the content of CA is 3.58%, the performance of the PU-modified asphalt and mixture is better when prepared by the prefabricated method. The PU-modified asphalt and mixture have high strength and plastic deformation ability. The modified asphalt mixture has excellent tensile performance, low-temperature performance, and water stability, which meets the requirements of epoxy asphalt and the mixture standards.

show abstract