Microscopic action and rheological properties of reinforced modified asphalt with varying fiber content

Chen, Keke; Zhang, Haitao; Gu, Yongcai; Zhao, Song

doi:10.1016/j.cscm.2023.e01824

Cited by 6 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to its inexpensive price, large yield, degradability, and renewability, many scholars have tried to use corn stalk fiber-modified asphalt to improve the asphalt mixture's performance [24,25]. Chen et al [26] pointed out that compared with polyester fiber, corn stalk fiber leads to a more considerable improvement in the asphalt mortar's performance at low temperatures. Li et al [27] proposed the best preparation process of corn stalk fiber for road use and found that corn stalk fiber had a stronger impact on improving the asphalt mixture's road performance than lignin fiber.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Performance of Modified Corn Stalk Fiber AC-13 Asphalt Mixture

Wang,

Qu,

Tang

et al. 2024

Coatings

View full text Add to dashboard Cite

As an agricultural waste, a large amount of corn stalk will cause environmental pollution. In order to realize the resource utilization of waste and meet the strict requirements of modern traffic on pavement strength and durability, it was modified and applied to an AC-13 asphalt mixture to study its influence on the road performance of asphalt mixture and its mechanism. The road performances of modified corn stalk fiber, lignin fiber, and ordinary asphalt mixtures were evaluated via the wheel tracking test, low-temperature bending test, water immersion Marshall test, freeze–thaw splitting test, and fatigue test. Based on the results of three-point bending fatigue test, the viscoelastic parameters and indexes of the fiber asphalt mixture were obtained by fitting the loading specimen and deflection data with the Burgers constitutive model, and the creep strain response was analyzed by applying dynamic load, so as to explore the relationship between the viscoelastic characteristics and creep behavior of modified corn stalk fiber and AC-13 mixture. The long-term high-temperature performance test of the asphalt mixture with the best fiber content was carried out by using the long-term pavement intelligent monitoring equipment independently developed by the group of investigators. According to the findings, the ideal fiber contents for modified corn and lignin in asphalt mixture are 0.2% and 0.3%, respectively. Among them, the modified corn stalk fiber with a 0.2% content has the best effect on road performance, viscoelastic performance, and the asphalt mixture’s creep behavior under dynamic load. Compared with the 0.3% lignin fiber asphalt mixture, its dynamic stability, bending stiffness modulus, immersion residual stability, freeze–thaw splitting strength ratio, and loading times at failure increased by 19.9%, 18.28%, 4.19%, 8.6%, and 9.15%, respectively. Compared with ordinary asphalt mixture, it increased by 47.0%, 28.72%, 7.65%, 15%, and 75.81%, respectively. Moreover, when modified corn stalk fiber is added at 0.2%, the viscoelastic delay time of asphalt mixture is the longest, the strain peak value and rut depth are at a minimum, and the viscoelastic properties, creep properties, and long-term high-temperature properties are the best.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigation on the Performance of Modified Corn Stalk Fiber AC-13 Asphalt Mixture

Wang,

Qu,

Tang

et al. 2024

Coatings

View full text Add to dashboard Cite

show abstract

“…The types of fibers currently used in roadways are diverse, and the modification effect of different fiber types on asphalt mixtures is shown in different performance areas. Chen et al found that adding polyester and straw fibers improved the performance of asphalt because they were compatible with asphalt and that straw fibers were not as effective as polyester fibers in modifying asphalt at high temperatures, while straw fibers were more effective at low temperatures [6]. Yang et al used three different fibers (i.e., carbon fibers, steel fibers, and steel wool) as microwave-absorbing materials to create self-healing asphalt mixtures that improved the mechanical properties and healing ability of the mixtures [7].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Performance of Asphalt Mastic with Natural Fiber Reinforcement: Basalt and Bamboo Fibers

et al. 2023

View full text Add to dashboard Cite

Incorporating fibers into asphalt mixtures as additives and stabilizers can significantly enhance the performance of asphalt pavements. This study aimed to analyze the impact of using basalt and bamboo fibers as modifiers on the properties of asphalt mastics. The effects of different types of fibers on rutting resistance, fatigue resistance, elastic recovery, and low-temperature cracking performance were tested using frequency scanning, linear amplitude scanning (LAS), multiple stress creep and recovery (MSCR), elastic recovery, and bending beam rheometer (BBR) experiments. The study results suggest that adding fibers into asphalt mastics can effectively improve their stiffness, and the higher the fiber content, the better the stiffness enhancement. Moreover, the characteristic flow index of asphalt mastics grows gradually with the rise in temperature, indicating that these materials exhibit near-Newtonian fluid behavior at elevated temperatures. Furthermore, incorporating fibers significantly enhances the high-temperature rutting resistance of asphalt mastics. However, the addition of fibers did not demonstrate any appreciable benefits in terms of fatigue resistance. The elasticity of asphalt mastics cannot be significantly changed by fiber content without compromising their elastic recovery. Surprisingly, the study’s findings showed that adding basalt fibers to asphalt mastics did not improve their resistance to low-temperature cracks. On the other hand, it was discovered that the ability of asphalt mastics to resist cracking at low temperatures could be made up for by the use of bamboo fibers as a modifier together with a raised temperature. Overall, it was discovered that bamboo fibers performed better than basalt fibers at improving the performance of modified asphalt mastics.

show abstract

“…Bonifiber PET has been utilized in the engineering of roads and bridges through reinforced overlayer treatment, resulting in evident enhancements in the performance and service life of these structures [18]. After conducting basic performance tests, high-and low-temperature performance tests, and molecular dynamics simulation, Chen [19] found that the addition of PET to asphalt can improve its high-and low-temperature performance. Ma [20] compared and analyzed four different types of fiber-modified asphalt and found that PET-modified asphalt has superior mid-temperature heat resistance.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Recycled Polyester Fiber and Performance Evaluation of Its Asphalt Mastic and Mixture

Xia,

Cao,

Zhang

et al. 2023

Sustainability

View full text Add to dashboard Cite

The use of recycled polyester fiber (Re-PET) partially addresses the scarcity of non-renewable polyester (PET), but its thermal resistance in asphalt mixtures is relatively low. To enhance the reutilization and thermal resistance of Re-PET, it was modified through in situ growth grafting with tetrahedral nanoSiO2. A novel nanoSiO2 hybrid material (SiO2/Re-PET) was successfully prepared, and the effects of the surface modification on the morphology and thermal resistance of the Re-PET were investigated with the examination of its mechanism of modification. The results demonstrated an increase in the surface roughness and specific surface area of SiO2/Re-PET, as well as a higher melting point and structural stability compared to Re-PET. Subsequently, Re-PET and SiO2/Re-PET asphalt mastics under a filler–asphalt ratio of 1.0 were prepared, and their classical and rheological properties were investigated and compared. The results indicated an increase in the softening point and shear strength of SiO2/Re-PET asphalt mastic, as well as a significant improvement in its high-temperature performance. Furthermore, subsequent pavement performance tests revealed a significant improvement in the performance of SiO2/Re-PET asphalt mixtures compared to Re-PET asphalt mixtures. Consequently, the findings of this research promote the recycling of Re-PET, ultimately advocating for the sustainability of pavement construction.

show abstract

Microscopic action and rheological properties of reinforced modified asphalt with varying fiber content

Cited by 6 publications

References 36 publications

Investigation on the Performance of Modified Corn Stalk Fiber AC-13 Asphalt Mixture

Investigation on the Performance of Modified Corn Stalk Fiber AC-13 Asphalt Mixture

Enhancing the Performance of Asphalt Mastic with Natural Fiber Reinforcement: Basalt and Bamboo Fibers

Surface Modification of Recycled Polyester Fiber and Performance Evaluation of Its Asphalt Mastic and Mixture

Contact Info

Product

Resources

About