含离散天然纤维的薄粘性土的干燥特性和直接张力特性

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Abu Taiyab, Nazmun Islam, Mokhlesur M. Rahman
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引用次数: 1

摘要

薄粘性土作为衬垫在许多岩土工程和地质环境工程应用中发挥着重要作用,如明渠和水库密封、污染物屏障等。它们的功能性能和可持续性主要取决于这些衬垫和屏障的干燥特性。已经进行了一些研究,以量化使用天然和合成纤维增强物所取得的改善程度。然而,对于加筋粘土的干燥特性,目前还缺乏深入的研究。本研究旨在探讨两种天然纤维(椰子纤维和黄麻纤维)加筋粘土的干燥和开裂行为以及抗拉强度的提高程度。在室内对粘土-椰子纤维和粘土-黄麻纤维混合料进行了一系列的直接拉伸和干燥开裂试验。结果表明,在相同含水率下,纤维加筋土的抗拉强度比未加筋土分别提高了475%和215%。干燥试验结果也表明,纤维共混能显著减小裂缝的宽度和深度。简要讨论了未加筋和纤维加筋粘土在干燥和直接拉伸作用下的特性。本研究的发现将是重要的专业人员处理粘土衬垫,并试图减少开裂问题与干燥的土壤。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Desiccation characteristics and direct tension attributes of thin clayey soil containing discrete natural fibers
The use of thin clayey soil as a liner plays an important role in many geotechnical and geo-environmental engineering applications, such as open channel and reservoir sealant, contaminant barrier etc. Their functional performance and sustainability depend primarily on the desiccation characteristics of these liners and barriers. A number of studies have been undertaken to quantify the degree of improvement achieved by using natural and synthetic fiber reinforcement. However, there is a lack of studies to understand the desiccation behavior of reinforced clay. This study aimed to explore the desiccation and cracking behavior of clayey soil reinforced with two natural fibers (coir and jute fiber) in addition to the degree of improvement in tensile strength. A series of direct tension and desiccation cracking tests have been conducted in the laboratory on clay-coir and clay-jute fiber mixes. The results demonstrate that when coir and jute fibers are used, the tensile strength of fiber-reinforced soil rises by up to 475 percent and 215 percent, respectively, when compared with the tensile strength of unreinforced soil at the same moisture content. Desiccation test results also show that blending of fibers reduces the breadth and depth of cracks significantly. The characteristics of unreinforced and fiber-reinforced clayey soil under desiccation and direct tension are briefly discussed in this paper. Findings of the present study will be important for professionals dealing with clay liners and trying to reduce cracking problems associated with drying soil.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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