Polymers

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Dear Colleagues,

Fiber-based composites have attracted wide attention due to their low weight, high strength, corrosion resistance, and high durability. By functionally modifying the fiber materials, fibers-based composite materials can not only maintain their original properties but also improve or overcome the weaknesses of any single material. Therefore, fiber-reinforced composites have been among the most important developed industrial materials for modern science and technology. This Special Issue of the open-access journal Polymers aims to collect cutting-edge original research papers and reviews on the topic of “High-Performance Fiber-Reinforced Polymer Composites”. Special emphasis will be placed on but not limited to the following:

Surface modification of fibers;
Synthesis of fiber-based nanocomposites;
Characterization of fiber-based composites;
Failure simulation of fiber-based nanocomposites;
Interface regulation of fiber-based nanocomposites;
Performance evaluation of fiber-based nanocomposites;
Application of fiber-based nanocomposites in special fields.

Prof. Dr. Tao Sun
Guest Editor

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Keywords

tailored structures
structural battery
interface debonding
structural composites
fiber surface treatment
fiber-reinforced polymer matrix
ultra-low-temperature environment

Published Papers (1 paper)

Research

19 pages, 3703 KiB

Open AccessArticle

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

by Wensheng Wang, Liansheng Yang, Honghai Cui, Fei Wu, Yongchun Cheng and Chunyu Liang

Polymers 2023, 15(19), 3887; https://0-doi-org.brum.beds.ac.uk/10.3390/polym15193887 - 26 Sep 2023

Cited by 3 | Viewed by 805

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. Full article

(This article belongs to the Special Issue High-Performance Fiber-Reinforced Polymer Composites)

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