Effect of the fiber surface treatment on the mechanical performance of bamboo fiber modified asphalt binder

Cui, Shian; Sheng, Yanping; Wang, Zhibin; Jia, Haichuan; Qiu, Wenli; Temitope, Ahmed Abdulakeem; Zhong, Xu

doi:10.1016/j.conbuildmat.2022.128453

Cited by 27 publications

(11 citation statements)

References 34 publications

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“…However, plant fibers also have the following limitations [ 96 ]: The mechanical properties of plant fibers are lower compared with those of conventional fibers; In an alkaline environment, plant fibers precipitate some carbohydrates, such as cellulose, hemicellulose, and lignin, which will inhibit the strength development of the gelling material; The high water absorption and variability of plant fibers lead to poor adhesion of geopolymer-based gelling materials; Plant fibers are easily degraded in alkaline matrices, which affects the long-term performance of the composites. …”

Section: Types Of Fibers For Geopolymer Concrete Performance Enhancementmentioning

confidence: 99%

The Influence of Fiber on the Mechanical Properties of Geopolymer Concrete: A Review

et al. 2023

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Geopolymer is widely used as a supplement to cementitious composites because of its advantages of low carbon and environmental protection, and geopolymer concrete is also broadly used in practical engineering. In recent years, geopolymer concrete has attracted increasing interest owing to its superior mechanical properties, and a series of research results have been obtained. In this paper, from the preparation of geopolymer concrete, based on the characteristics that geopolymer concrete is brittle and easy to crack, the types and basic properties of fibers to enhance the toughness of concrete are analyzed, the advantages and disadvantages of different fibers used as a material to enhance the toughness of concrete are summarized, and we review the effects of type, shape, volume rate, aspect ratio, and hybrid fiber combinations on the static mechanical properties. The results indicate that fibers have significant potential to enhance the compressive strength, splitting tensile strength, flexural strength, and fracture toughness of geopolymer concrete, and the optimal fiber volume rate seems to be related to the fiber type. Whereas the effect of aspect ratio and hybrid fiber combinations on the properties of geopolymer concrete seems to be obvious. This paper reviews the influence of fiber on the basic mechanical properties of geopolymer concrete, which provides a solid foundation to promote the further development and application of the research on the toughness of fiber-reinforced geopolymer concrete and provides recommendations for future research.

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Section: Types Of Fibers For Geopolymer Concrete Performance Enhancementmentioning

confidence: 99%

The Influence of Fiber on the Mechanical Properties of Geopolymer Concrete: A Review

et al. 2023

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“…Te diameters of the three fbers shown in Figure 11, from large to small, are ranked as follows: lignin fber < cotton straw fber < corn straw fber. Te smaller the diameter of the fber, the smaller the length-to-diameter ratio, which results in a larger contact area between the fber and asphalt as well as higher absorption asphalt by the fber [24,25]. Te NaOH solution removed hemicellulose, pectin, waxy, and other unstable components; consequently, the adhesion stress in the fber bundle decreased, the single fbers were dispersed, and the surface roughness of the straw fber increased.…”

Section: Efect Of Fiber Morphology On Asphaltmentioning

confidence: 99%

Road Performance and Microscopic Mechanism Analysis of Modified Straw Fiber Asphalt Binder

Wang

et al. 2023

Advances in Materials Science and Engineering

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In this study, the correlation between the microstructure of straw fibers and the macroscopic properties of asphalt binders is investigated. Penetration, softening point, bending beam rheometer, and toughness tests are performed to investigate the relationship between the pavement properties of fiber asphalt binders and each of the fiber types and contents. Subsequently, a four-component test, SEM, Fourier transform infrared microscopy, and fluorescence microscope tests are performed to analyze the microstructure of the straw fiber and its effect on asphalt properties. The results show that the high-temperature performance and shear resistance of the asphalt binder were enhanced with an increase in the modified straw fiber content. The low-temperature performance and toughness of the asphalt binder were reduced because of excessive fiber, and the recommended fiber content is 1.5%–2.0%. The adsorption capacity of the modified straw fiber for the light components of asphalt increased by 5.4% on average, and the low-temperature creep capacity of asphalt decreased by 9.6%. The surface roughness of the straw fiber increased via modification, and the shear resistance, high-temperature deformation resistance, and stress relaxation ability of the asphalt increased by 23.1%, 6.5%, and 5.7%, respectively. The comprehensive properties of the asphalt binder with modified straw fiber are similar to those of lignin fiber.

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“…Therefore, it is of great importance to find ways to strengthen the performance of HMA. Many researchers and agencies strive to develop new mineral gradations [6] to improve the performance of raw materials, including aggregates, asphalt binders, and additives [7][8][9]. In recent years, fibers have been employed to enhance the performance of HMA in heavy-duty road pavement [10].…”

Section: Introductionmentioning

confidence: 99%

A Study of the Bond Strength and Mechanism between Basalt Fibers and Asphalt Binders

Sun,

Kou,

et al. 2024

Applied Sciences

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The bond strength between basalt fibers and asphalt binders is an important parameter that can be used to evaluate the influence of basalt fibers on the mechanical properties of asphalt binders and asphalt mixtures. To date, however, there remains a lack of methods that can be used to assess the bond strength between basalt fibers and asphalt binders. This study employed a fiber-asphalt pull-out tester (POT). Significant upward, peak, and downward stages were observed from the relationship curves between the pull-out force (POF) and displacement, corresponding to the holding stage and reaching the maximum POF stage and the sliding or failure stage between fibers and asphalt binders. Maximum POF is recommended to calculate the bond strength between basalt fibers and asphalt binders. The types of asphalt binders suitable for basalt fibers and the appropriate fiber embedding depths for different types of asphalt binders guiding the selection of fiber length are recommended based on the influence of fiber embedding depth and asphalt binders on the fiber–asphalt bond strength. In addition, surface energy was used to calculate the bond strength as well. Surface energy was determined from contact angle measurements using the sessile drop method. Furthermore, a scanning electron microscope (SEM) was employed to examine the bond mechanism between asphalt binders and basalt fibers. These experiments showed how basalt fibers serve to reinforce asphalt mixtures by bonding with asphalt binders.

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Effect of the fiber surface treatment on the mechanical performance of bamboo fiber modified asphalt binder

Cited by 27 publications

References 34 publications

The Influence of Fiber on the Mechanical Properties of Geopolymer Concrete: A Review

The Influence of Fiber on the Mechanical Properties of Geopolymer Concrete: A Review

Road Performance and Microscopic Mechanism Analysis of Modified Straw Fiber Asphalt Binder

A Study of the Bond Strength and Mechanism between Basalt Fibers and Asphalt Binders

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