Study on the Rheological Properties of Formic Acid Lignin Modified Asphalt

Cai, Meng; Peng, Feng; Cheng, Cheng

doi:10.3390/buildings13030655

Cited by 2 publications

(3 citation statements)

References 26 publications

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“…However, this also led to a decrease in low-temperature performance, as shown by their Bending Beam Rheometer (BBR) test results [20]. Additionally, Cai et al (2023) investigated the effect of lignin and formic acid lignin additives at concentrations of 5 and 10% [21]. Their study revealed that the inclusion of these additives could signifi-Appl.…”

Section: Lignin-modified Bitumenmentioning

confidence: 99%

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Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified Bitumen

Rezazad Gohari,

Lamothe,

Bilodeau

et al. 2023

Applied Sciences

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Environmental approaches in the asphalt industry have focused on utilizing waste materials as modifiers. Lignin is a high-potential bitumen modifier due to its characteristics; however, the blending process with bitumen is critical. This study investigates the chemo-thermal characteristics of lignin-modified bitumen under two different blending protocols, including a mechanical and high-shear mixer to evaluate its performance as a modifier. According to the protocols, 5, 10, and 20% of Kraft lignin was added to a PG 58S−28 bitumen. The samples were subjected to analysis using Brookfield Rotational Viscosity (BRV), Dynamic Shear Rheometer (DSR), Fourier-Transform Infrared Spectroscopy (FTIR), Environmental Scanning Electron Microscopy (ESEM), Thermogravimetric Analysis (TGA), and Differential Scanning Calorimetry (DSC) tests. The BRV and DSR test results indicate a remarkable alteration in the rheological properties of lignin-modified bitumen under blending conditions. The FTIR analysis indicated that Kraft lignin did not produce new functional groups. The fibril structures of the bitumens are affected by Kraft lignin content and blending conditions due to ESEM. The Kraft lignin and blending conditions influence the thermal behavior of bitumen. The findings highlight Kraft lignin’s potential as a bitumen modifier, and the fact that its characteristics are influenced by the blending protocol and Kraft lignin content.

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Section: Lignin-modified Bitumenmentioning

confidence: 99%

“…Sci. 2023, 13, 7766 3 of 25 cantly enhance the properties of the asphalt at high temperatures, while also improving its resistance to fatigue and cracking at low temperatures [21].…”

Section: Lignin-modified Bitumenmentioning

confidence: 99%

Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified Bitumen

Rezazad Gohari,

Lamothe,

Bilodeau

et al. 2023

Applied Sciences

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“…The incorporation of biowaste enables the performance enhancement of asphalt at high and low temperatures, such as lignin waste, corn stover oil, and plant fibers, which have attracted widespread concerns for researchers [1][2][3]. A vast amount of bagasse, a by-product of the sugar industry, is generated annually in the world.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Surface Modification of Bagasse Fibers: Performance of Asphalt Binders/Mixtures with Bagasse Fibers

Xie,

Jia,

Zhu

et al. 2024

Buildings

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The influence of surface modification on the properties of bagasse fibers and asphalt binders/mixtures was investigated. Bagasse fibers were modified by single, binary, and ternary methods with hydrochloric acid, sodium hydroxide, and sodium chlorite, respectively. The physical and chemical properties of bagasse fibers were analyzed by scanning electron microscopy, Fourier transform infrared spectroscopy, and an adsorption test, respectively. The rheological properties of asphalt binders with bagasse fibers or lignin fibers were analyzed by the dynamic shear rheometer test and bending beam rheometer test. In addition, the performance of asphalt mixtures with bagasse fibers or lignin fibers were evaluated by a wheel rutting test, bending test at a low temperature, and water stability test, respectively. In conclusion, the hydrophilic functional groups on the fiber surface were partially eliminated by modification, facilitating the degradation of different fiber components. Furthermore, the degree of fibrillation was improved, and more interfaces with asphalt components were formed, thus enhancing the high-temperature deformation resistance of asphalt binders, but slightly impairing its low-temperature performance. Among all modification methods, the ternary composite modification exerted important influences on fiber structure, oil absorption, and rheological properties of asphalt binders, significantly enhancing the performance of asphalt mixtures. Combined with surface modification methods, bagasse fibers would be promising reinforced pavement materials.

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Study on the Rheological Properties of Formic Acid Lignin Modified Asphalt

Cited by 2 publications

References 26 publications

Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified Bitumen

Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified Bitumen

Investigation of Surface Modification of Bagasse Fibers: Performance of Asphalt Binders/Mixtures with Bagasse Fibers

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