Research progresses of fibers in asphalt and cement materials: A review

Jing Li , Ling Yang , Lu He , Ruiwen Guo , Xinyu Li , Youchao Chen , Yaseen Muhammad , Yu Liu
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引用次数: 14

Abstract

Asphalt mixtures and cement concrete are an important material in the construction of roads, highways and buildings, and there has been a lot of research about the improvement of their performance. Among them, fibers are commonly used in the construction industry because of their superior properties as reinforcing materials that can provide a proper interfacial action between the fibers and the substrate. This review classifies fibers into natural fibers, inorganic fibers and polymer fibers according to their sources and properties. It summarizes and compares the characteristics, modification methods, usage requirements and research status of each type of fiber in asphalt and cement construction materials, and analyzes the problems and challenges faced by fibers in their applications. The evaluation results show that various types of fibers can enhance the fracture resistance, tensile strength and rutting resistance of asphalt to a certain extent, improve the high temperature performance and viscoelasticity of asphalt, and have a certain effect on the fatigue resistance and road water resistance of asphalt mixes. The fibers also provide better tensile, compressive and abrasion resistance to cement concrete and improve the brittleness and crack resistance of ordinary cement. Besides, for some defects of various types of fibers in construction materials, such as biodegradability, dispersibility and surface inertness of fibers, the targeted modification of fibers is introduced based on physical and chemical modification methods to improve the performance impact of modified fibers in various conditions of application.

纤维在沥青和水泥材料中的研究进展
沥青混合料和水泥混凝土是道路、公路和建筑施工中的重要材料,人们对其性能的改善进行了大量的研究。其中,纤维通常用于建筑行业,因为它们作为增强材料具有优异的性能,可以在纤维和基底之间提供适当的界面作用。根据纤维的来源和性质,将纤维分为天然纤维、无机纤维和聚合物纤维。总结比较了沥青和水泥建筑材料中每种纤维的特性、改性方法、使用要求和研究现状,分析了纤维在应用中面临的问题和挑战。评价结果表明,各种类型的纤维可以在一定程度上提高沥青的抗裂性、抗拉强度和抗车辙性,改善沥青的高温性能和粘弹性,对沥青混合料的抗疲劳性和路用耐水性有一定影响。纤维还为水泥混凝土提供了更好的抗拉、抗压和耐磨性,并提高了普通水泥的脆性和抗裂性。此外,针对建筑材料中各种类型纤维的一些缺陷,如纤维的生物降解性、分散性和表面惰性,介绍了基于物理和化学改性方法对纤维进行有针对性的改性,以提高改性纤维在各种应用条件下的性能影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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