Suitability of Fiber Lengths for Hot Mix Asphalt with Different Nominal Maximum Aggregate Size: A Pilot Experimental Investigation

Lou, Keke; Kang, Aihong; Wu, Zhengguang; Lü, Peng

doi:10.3390/ma13173685

Cited by 23 publications

(9 citation statements)

References 35 publications

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“…Several measures were adopted to enhance the performance of the pavement [ 6 , 7 , 8 , 9 , 10 ]. The previous studies showed that adding fibers into the mixtures is an effective way [ 11 , 12 ]. Generally, the fibers added in the asphalt pavement could be divided into several categories such as the plant fibers (lignin fiber and bamboo fiber, etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Fatigue Performance of Asphalt Mixture Reinforced by Basalt Fiber

Lou

Zhang

2021

Materials

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Basalt fiber has been widely used in asphalt mixture due to its excellent mechanical properties and good combination with asphalt. In order to systematically evaluate the enhancement effect of basalt fiber on the fatigue performance of the mixtures, gradations of Stone Mastic Asphalt and Superpave with different nominal maximum aggregate sizes, namely SMA-13, SUP-20 and SUP-25, were prepared, and a four-point bending beam fatigue test was adopted under the strain control mode. The fatigue damage mode was assessed based on the phenomenology theory, energy dissipation theory and change rate of dissipated energy. The results showed that basalt fiber could well increase the fatigue life of the mixtures. Basalt fiber could also increase the cumulative dissipated energy of the mixtures, and it was linearly correlated with the fatigue life in double logarithmic coordinates. In the meantime, adding basalt fiber could increase the change rate of dissipated energy of the mixtures. Furthermore, it is not appropriate to take the stiffness modulus declined to 50% of the original as the fatigue failure criterion of the mixture; this paper suggested that it is reasonable when the stiffness modulus was 15–25% that of the initial. These findings provide a theoretical basis for exploring the fatigue failure of asphalt pavements.

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Section: Introductionmentioning

confidence: 99%

Investigation on Fatigue Performance of Asphalt Mixture Reinforced by Basalt Fiber

Lou

Zhang

2021

Materials

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“…Preliminary research carried out by our research group and actual engineering experience [ 33 ] suggested the length and weight content of basalt fiber as 6 mm and 0.3%, respectively. Through the Marshall test, the optimal asphalt content (OAC) is decided in the research.…”

Section: Materials and Test Methodsmentioning

confidence: 99%

Effects of Fiber Diameter on Crack Resistance of Asphalt Mixtures Reinforced by Basalt Fibers Based on Digital Image Correlation Technology

et al. 2021

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It is now more popular to use basalt fibers in the engineering programs to reinforce the crack resistance of asphalt mixtures. However, research concerning the impact of the basalt fiber diameter on the macro performance of AC-13 mixtures is very limited. Therefore, in this paper, basalt fibers with three diameters, including 7, 13 and 25 μm, were selected to research the influences of fiber diameter on the crack resistance of asphalt mixtures. Different types of crack tests, such as the low temperature trabecular bending test (LTTB), the indirect tensile asphalt cracking test (IDEAL-CT), and the semi-circular bend test (SCB), were conducted to reveal the crack resistance of AC-13 mixtures. The entire cracking process was recorded through the digital image correlation (DIC) technique, and the displacement cloud pictures, strain, average crack propagation rate (V) and fracture toughness (FT) indicators were used to evaluate the crack inhibition action of the fiber diameter on the mixture. The results showed that the incorporation of basalt fiber substantially improved the crack resistance, slowed down the increase of the displacement, and delayed the fracture time. Basalt fiber with a diameter of 7 μm presented the best enhancement capability on the crack resistance of the AC-13 mixture. The flexibility index (FI) of the SCB test showed a good correlation with V and FT values of DIC test results, respectively. These findings provide theoretical advice for the popularization and engineering application of basalt fibers in asphalt pavement.

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“…Fibers can improve the permanent deformation resistance of asphalt mixture, although the impact is minor. Lou et al [ 60 ] studied the effect of different fiber lengths and mix grades on dynamic stability. For blending with 0.3% BF, fiber lengths of 3, 6, 9, 12, 15 mm and mix types of SUP-13, SUP-20, SUP-25 were used.…”

Section: Performance Of Asphalt Mixture Modified With Basalt Fibermentioning

confidence: 99%

Recent Advances in Basalt Fiber Reinforced Asphalt Mixture for Pavement Applications

Hui

Men

et al. 2022

Materials

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This paper conducts a thorough review of the literature on the feasibility and current state-of-the-art incorporation of basalt fiber (BF) into asphalt pavement materials, focusing on fiber characteristics, dosage, incorporation methods, mixture properties, and surface modification techniques. The optimum basalt fiber dosage should be determined based on engineering performance parameters such as asphalt type, fatigue cracking, thermal cracking, rutting, and moisture resistance of asphalt mixtures. Basalt fibers are added to asphalt mixes by dry method or mixed method to achieve better dispersion. Adding BF to asphalt mixtures increased performance characteristics like cracking resistance, rutting resistance, and fatigue resistance. Overall, incorporating BF into asphalt mixtures would lower costs while increasing pavement service life. More research is needed to fully understand the effects of different sizes of BF on pavement performance and the possible environmental and economic repercussions of fiber surface alteration.

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Suitability of Fiber Lengths for Hot Mix Asphalt with Different Nominal Maximum Aggregate Size: A Pilot Experimental Investigation

Cited by 23 publications

References 35 publications

Investigation on Fatigue Performance of Asphalt Mixture Reinforced by Basalt Fiber

Investigation on Fatigue Performance of Asphalt Mixture Reinforced by Basalt Fiber

Effects of Fiber Diameter on Crack Resistance of Asphalt Mixtures Reinforced by Basalt Fibers Based on Digital Image Correlation Technology

Recent Advances in Basalt Fiber Reinforced Asphalt Mixture for Pavement Applications

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