Influence of Polypropylene Length on Stability and Flow of Fiber-reinforced Asphalt Mixtures

Bayat, Ramin; Talatahari, Siamak

doi:10.28991/cej-2016-00000056

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…Tapkin et al [ 21 ] found that the addition of an appropriate amount of polypropylene fiber had a very positive effect on the properties of asphalt concrete, resulting in good rutting resistance, increased fatigue life, and reduced reflective cracking. Tests on the Marshall stability of polypropylene fiber-reinforced asphalt mixture were conducted by Ramin Bayat et al [ 22 ], which indicated an optimum fiber content for the best reinforcing effect on the performance of the asphalt mixture. Most studies indicate that the addition of fibers to asphalt materials enhances their properties.…”

Section: Introductionmentioning

confidence: 99%

Study on Viscoelastic Properties of Various Fiber-Reinforced Asphalt Binders

Li,

Xu,

Wang

et al. 2024

Materials

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This study analyzed the viscoelastic properties of asphalt binders reinforced with various fibers, such as modified asphalt binder, modified asphalt binder reinforced with lignin fibers (LFs), polyester fibers (PFs), and polypropylene fibers (PPFs), using dynamic shear rheological (DSR) testing. Then, the experiment generated data on the dynamic modulus and phase angle, which described the dynamic rheological characteristics at varying temperatures. The generalized Maxwell model was employed to select the appropriate element, and the test curve was fitted into a discrete time spectrum based on the time–temperature equivalence principle (TTSP). The master curves of the relaxation modulus and creep compliance were established to predict the relaxation and creep properties of various asphalt binders. The analysis indicated that fiber-reinforced binders offer superior resistance to high temperatures and long-term deformation, while being less sensitive to temperature and having a more significant elastic characterization. The binders reinforced with PPFs and LFs exhibited superior performance in high-temperature settings and long-term durability, respectively. On the other hand, the binder reinforced with PFs displayed exceptional high-temperature elastic properties. Additionally, based on the experimental data and corresponding discussion, it appears that the 13-element GM model is more appropriate for fitting the data.

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Section: Introductionmentioning

confidence: 99%

Study on Viscoelastic Properties of Various Fiber-Reinforced Asphalt Binders

Li,

Xu,

Wang

et al. 2024

Materials

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“…To ensure the long-term sustainability of roadways, minimize maintenance costs, and conserve resources, paving materials must be carefully chosen. The optimum design of both the pavement mixture and roadway is of great importance [1].…”

Section: Introductionmentioning

confidence: 99%

Artificial Neural Networks for Flexible Pavement

et al. 2023

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Transportation agencies are primarily responsible for building new roads and maintaining current roads. The main focuses of these agencies are to prioritize maintenance and make significant rehabilitation decisions to handle serious problems facing road authorities. Considerable efforts and an abundance of studies have been performed to determine the nature, mechanisms, test methods, and measurement of pavements for preservation and improvements of roadways. The presented study reports a state-of-the-art review on recent advances in the application of artificial intelligence in various steps of flexible pavement, including pavement construction, performance, cost, and maintenance. Herein, the challenges of gathering large amounts of data, parameter optimization, portability, and low-cost data annotating are discussed. According to the findings, it is suggested that greater attention should be paid to integrating multidisciplinary roadway engineering techniques to address existing challenges and opportunities in the future.

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“…In general, there are two main types of fibers: synthetic fibers (manmade fibers) and natural fibers (plant fibers). Synthetic fibers commonly used to improve the performance of asphalt mix include polypropylene fiber, carbon fiber, glass fiber, lignin fiber, and basalt fiber [14][15][16][17][18], but these mineral fibers or polymer fibers are relatively expensive and difficult to use in a wide range of applications. In recent years, natural fibers have received more attention in the field of asphalt improvement because of their low cost and environmental benefits.…”

Section: Introductionmentioning

confidence: 99%

The Properties of Modified Bagasse Fiber/Nano-TiO2 Composite Asphalt in a High-Temperature and High-Humidity Salt Environment

Xie,

Tang,

Tao

et al. 2023

Materials

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The southern tropical coastal areas of China are high-temperature and high-humidity salt environments, which hinder the durability and service life of ordinary asphalt pavement. To enhance the durability of asphalt pavement in these areas, modified bagasse fiber combined with nano-TiO2 was used to improve the corrosion resistance of asphalt pavement in high-temperature and high-humidity salt environments. The micro-morphology, high-temperature oil absorption, high-temperature heat resistance, and hygroscopicity of bagasse fiber modified using three silane coupling agents combined with NaOH were compared, and the best silane coupling agent/NaOH modification scheme for bagasse fiber was found. Based on conventional physical tests (penetration, softening point, ductility), rheological property tests (rotational viscosity, dynamic shear rheological test, multi-stress creep recovery test, linear amplitude scanning test), and a four-point bending fatigue test of the asphalt mixture, the properties of modified bagasse fiber asphalt binder and mixture after cyclic dry–wet erosion under pure water and salt solution (NaCl, Na2SO4) were determined, and the effects of the erosion environment and fiber ratio on the basic physical and rheological properties of the asphalt were clarified. Compared with the silane coupling agents KH550 and KH590, the bagasse fiber modified with KH570/NaOH had a better high-temperature oil absorption capacity, heat stability capacity, and matrix asphalt compatibility. The worst erosion environment was Na2SO4, but the increase in test temperature and fiber content weakened the sensitivity of the asphalt binder performance in different erosion environments. The erosion capacity order was as follows: Na2SO4 > NaCl > pure water. In the worst erosion environment, 0.5% modified bagasse fiber/Nano-TiO2 asphalt binder (Bn−570−0.5) had the best corrosion resistance in a high-temperature and high-humidity salt environment. The penetration, softening point, creep recovery rate R3.2, non-recoverable creep compliance Jnr3.2, and fatigue life after long-term aging (with 5% strain) of Bn-570-0.5 were, respectively, increased by −16.9%, 37.5%, 37.95%, −27.86%, and 38.30% compared with unblended base asphalt binder (B). In addition, the four-point flexural fatigue life of Bn-570-0.5 was 169.2% higher than that of the unblended base mixture.

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Influence of Polypropylene Length on Stability and Flow of Fiber-reinforced Asphalt Mixtures

Cited by 8 publications

References 7 publications

Study on Viscoelastic Properties of Various Fiber-Reinforced Asphalt Binders

Study on Viscoelastic Properties of Various Fiber-Reinforced Asphalt Binders

Artificial Neural Networks for Flexible Pavement

The Properties of Modified Bagasse Fiber/Nano-TiO2 Composite Asphalt in a High-Temperature and High-Humidity Salt Environment

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