Effect of hygrothermal environment on properties of bagasse fibers and asphalt binders/mixtures with bagasse fibers
Document Type
Article
Publication Date
2-28-2025
Department
Department of Civil, Environmental, and Geospatial Engineering
Abstract
To explore the effect of the hygrothermal environment on the properties of materials, the hygrothermal cycling aging tests were performed for bagasse fibers and asphalt binders/mixtures with bagasse fibers and lignin fibers were used as the control groups. Subsequently, Fourier transform infrared spectroscopy, supported by thermogravimetric analysis, was implemented to analyze the influence of the hygrothermal environment on chemical composition and thermal stability of samples. Then, a series of rheological tests analyzed the viscoelastic behavior of asphalt binders with plant fibers. Finally, the performance of fiber asphalt mixtures was evaluated through indirect tensile strength tests. The results revealed that with the increase of hygrothermal cycles, the main components of plant fibers were gradually degraded, and especially, hemicellulose degradation was the most severe within them. The hygrothermal cycles would reduce the thermal stability of plant fibers and the thermal stability of binders with fibers could be improved. After 50 hygrothermal cycles, the creep recovery ability of plant fiber asphalt binders was weakened and the fatigue lives of bagasse fibers and lignin fibers were reduced by 38.6 % and 35.7 % at the strain levels of 5 %, respectively. Moreover, the indirect tensile strengths of plant fiber asphalt mixtures decreased by 39.5 % and 44.0 %, respectively. It was evident that bagasse fibers and asphalt could provide better aging resistance protection for each other. In addition, bagasse fibers and lignin fibers exhibited similar abilities to reduce the effect of hygrothermal environment on the properties of asphalt binders.
Publication Title
Construction and Building Materials
Recommended Citation
Li, Z.,
Huang, Z.,
Xiong, Q.,
Liu, W.,
You, Z.,
Huang, Y.,
Wen, J.,
&
Zhao, Z.
(2025).
Effect of hygrothermal environment on properties of bagasse fibers and asphalt binders/mixtures with bagasse fibers.
Construction and Building Materials,
465.
http://doi.org/10.1016/j.conbuildmat.2025.140242
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p2/1446
