膨润土的最新进展:在水泥基复合材料中的应用

IF 2.1 Q2 ENGINEERING, CIVIL
Zihong Gan, Y. Zhuge, D. Thambiratnam, Tommy H. T. Chan, T. Zahra, Mohammad Asad
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引用次数: 2

摘要

具有负泊松比(NPRs)的辅助材料分别在轴向压缩(或拉伸)力的作用下具有横向收缩(或膨胀)的能力。由于这种独特的特性,人们发现一种膨胀材料具有高的能量吸收能力、断裂韧性和抗剪切性,因此被视为冲击防护领域的未来材料之一。然而,由于对NPR效应的各种限制,膨胀结构或材料的土木工程应用很少。近年来,膨胀剂的不断发展促进了其在胶凝材料中的应用。本文概述了膨胀胶凝复合材料的最新发展,并分析和总结了它们在不同载荷条件下的力学性能。在进行广泛的有限元模拟之前,人们更多地关注有限的实验结果。特别注意母体材料引入饱胀行为的扩张可行性,精确识别其局限性、创新的合成方法和促进饱胀特征。最后,本文概述了目前研究的局限性,并展望了未来在膨胀水泥基复合材料方面的研究机会。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Recent advances in auxetics: Applications in cementitious composites
Auxetic materials, possessing negative Poisson’s ratios (NPRs), have the ability to shrink (or expand) in the lateral direction under an axial compressive (or tensile) force respectively. Due to this unique feature, an auxetic material is found to sustain high energy absorption capacity, fracture toughness and shear resistance and thus regarded as one of the future materials in the field of impact protection. However, civil engineering applications of auxetic structures or materials are minimal due to miscellaneous restrictions on NPR effects. Accumulative developments in auxetics have facilitated their applications in cementitious materials in recent years. This paper presents an overview of recent advances in the development of auxetic cementitious composites and analyses and summarises their mechanical properties under different loading conditions. Prior to extensive finite element simulations, more attention has been given to the limited experimental results. Particular attention is paid to the expansionary feasibility of the parent material to introduce auxetic behaviour, with precise identification of the limitations, innovative composition methods and facilitation of auxetic features. Finally, the paper outlines the limitations of the current research and envisages few future research opportunities in auxetic cementitious composites.
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来源期刊
CiteScore
4.30
自引率
25.00%
发文量
48
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