Freeze–Thaw Damage Mechanism Analysis of SBS Asphalt Mixture Containing Basalt Fiber and Lignocellulosic Fiber Based on Microscopic Void Characteristics

Abstract

Freeze–thaw effects pose the significant challenge to asphalt pavement durability, leading to various types of distress and deterioration. This study investigates the freeze–thaw damage mechanism of Styrene–Butadiene–Styrene (SBS) asphalt mixtures containing reinforcement fibers, specifically basalt fiber as well as lignocellulosic fiber, through a microscopic void characteristics analysis. This investigation aims to understand how the presence of basalt fiber as well as lignocellulosic fiber influences void characteristics for SBS asphalt mixtures during freeze–thaw cycles. A comprehensive experimental program was conducted for the void and mechanical characteristics, which involved the preparation of SBS asphalt mixtures containing basalt fiber as well as lignocellulosic fiber. The mechanical performances of the two types of asphalt mixtures decrease with more freeze–thaw cycles. The decline is faster initially and gradually slows down. Basalt-fiber-modified SMA-13 has higher air void content and mechanical properties compared to lignocellulosic-fiber-modified SMA-13, indicating that adding basalt fibers improves the mechanical performances of SMA-13 asphalt mixture. Both types of asphalt mixtures experience increasing damage with more freeze–thaw cycles, indicating irreversible damage. The stability damage levels are similar, but basalt-fiber-modified SMA-13 has lower splitting strength damage and stiffness modulus damage compared to lignocellulosic-fiber-modified SMA-13. This suggests that adding basalt fibers enhances the resistance to freeze–thaw damage. Surface wear of asphalt mixtures under repeated freeze–thaw cycles is a complex and dynamic process. Fractal theory can uncover the mechanism of surface wear, while describing surface wear behavior and void deformation characteristics using fractal dimension, angularity, roundness, and aspect ratio is a logical and effective approach. The findings provide insights into freeze–thaw damage mechanisms at the microscopic level, highlighting the effects of reinforcement fibers. They provide valuable insights that can be used to optimize the design and maintenance of asphalt pavements.

Estabilización De Mezclas Asfálticas Stone Mastic Asphalt (Sma) Mediante Inhibidores De Drenaje Como Fibras De Basalto

“…Para Wang et al (2023), la singularidad de las fibras de basalto radica en sus propiedades mecánicas, dado que ofrecen resistencia, durabilidad y versatilidad, lo que las convierte en un componente valioso para diversas aplicaciones, como la construcción y la fabricación de materiales compuestos. Además, su proceso de obtención es más respetuoso con el medioambiente en comparación con otras fibras sintéticas, puesto que no requiere la adición de productos químicos durante la fabricación y utiliza una materia prima abundante y sostenible.…”

“…Esta evaluación comparativa permite apreciar el valor distintivo de la fibra de basalto y comprender cómo se posiciona en el espectro de materiales fibrosos disponibles en la actualidad. Wang et al (2023) indican que la fibra de basalto se distingue por sus notables diferencias con respecto a otras fibras comúnmente utilizadas, como la fibra de vidrio y la fibra de carbono. En términos de composición, mientras que la fibra de vidrio se basa en la sílice y la fibra de carbono en la carbonización de materiales orgánicos, la fibra de basalto se obtiene a partir de la fusión y extrusión del basalto, una roca ígnea de origen volcánico.…”

Influence of basalt fiber on performance of thin overlayer asphalt mixtures based on multiple experimental methods

“…frontiersin.org overlayer asphalt mixtures, and a greater enhancement could be observed on SMA-5 than OGFC-5. This phenomenon might be attributed to the fact that the addition of fiber could enhance the toughness of asphalt binder (Wang et al, 2023;Xie and Wang, 2023), thereby delaying the cracking of thin overlayer asphalt mixtures at low and intermediate temperature. Furthermore, due to the lower volume of air voids (VV) and higher voids filled with asphalt (VFA) in SMA-5, the reinforcing effect of fiber in its asphalt binder was more pronounced, resulting in superior enhancement effect of intermediate temperature cracking resistance.…”

Research on Basalt Fiber Oil/Asphalt Absorption Performance and Test Methods Suitable for Asphalt Mixture with Different Structures

“…With the rapid development of the economy, there are higher requirements for the functionality of asphalt pavement. The incorporation of fiber materials could improve the road performance of the asphalt mixture [1][2][3][4][5][6][7][8]. Stone Mastic Asphalt (SMA) is a typical gap-graded asphalt mixture, which is widely used because of its excellent high-temperature stability, lowtemperature crack resistance and water stability [9][10][11][12][13].…”