Effect of discrete fibre reinforcement on soil tensile strength
The tensile behaviour of soil plays a significantly important role in various engineering applications. Compacted soils used in geotechnical constructions such as dams and clayey liners in waste containment facilities can suffer from cracking due to tensile failure. In order to increase soil tensile...
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doaj-96e529900d1b41d1b670afa8a1f65ea32020-11-24T22:11:47ZengElsevierJournal of Rock Mechanics and Geotechnical Engineering1674-77552014-04-016213313710.1016/j.jrmge.2014.01.003Effect of discrete fibre reinforcement on soil tensile strengthJian Li0Chaosheng Tang1Deying Wang2Xiangjun Pei3Bin Shi4School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, ChinaKey Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, ChinaThe tensile behaviour of soil plays a significantly important role in various engineering applications. Compacted soils used in geotechnical constructions such as dams and clayey liners in waste containment facilities can suffer from cracking due to tensile failure. In order to increase soil tensile strength, discrete fibre reinforcement technique was proposed. An innovative tensile apparatus was developed to determine the tensile strength characteristics of fibre reinforced soil. The effects of fibre content, dry density and water content on the tensile strength were studied. The results indicate that the developed test apparatus was applicable in determining tensile strength of soils. Fibre inclusion can significantly increase soil tensile strength and soil tensile failure ductility. The tensile strength basically increases with increasing fibre content. As the fibre content increases from 0% to 0.2%, the tensile strength increases by 65.7%. The tensile strength of fibre reinforced soil increases with increasing dry density and decreases with decreasing water content. For instance, the tensile strength at a dry density of 1.7 Mg/m3 is 2.8 times higher than that at 1.4 Mg/m3. It decreases by 30% as the water content increases from 14.5% to 20.5%. Furthermore, it is observed that the tensile strength of fibre reinforced soil is dominated by fibre pull-out resistance, depending on the interfacial mechanical interaction between fibre surface and soil matrix.http://www.sciencedirect.com/science/article/pii/S1674775514000122Fibre reinforced soilTensile strengthDirect tensile testFibre contentDry densityWater content |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jian Li Chaosheng Tang Deying Wang Xiangjun Pei Bin Shi |
spellingShingle |
Jian Li Chaosheng Tang Deying Wang Xiangjun Pei Bin Shi Effect of discrete fibre reinforcement on soil tensile strength Journal of Rock Mechanics and Geotechnical Engineering Fibre reinforced soil Tensile strength Direct tensile test Fibre content Dry density Water content |
author_facet |
Jian Li Chaosheng Tang Deying Wang Xiangjun Pei Bin Shi |
author_sort |
Jian Li |
title |
Effect of discrete fibre reinforcement on soil tensile strength |
title_short |
Effect of discrete fibre reinforcement on soil tensile strength |
title_full |
Effect of discrete fibre reinforcement on soil tensile strength |
title_fullStr |
Effect of discrete fibre reinforcement on soil tensile strength |
title_full_unstemmed |
Effect of discrete fibre reinforcement on soil tensile strength |
title_sort |
effect of discrete fibre reinforcement on soil tensile strength |
publisher |
Elsevier |
series |
Journal of Rock Mechanics and Geotechnical Engineering |
issn |
1674-7755 |
publishDate |
2014-04-01 |
description |
The tensile behaviour of soil plays a significantly important role in various engineering applications. Compacted soils used in geotechnical constructions such as dams and clayey liners in waste containment facilities can suffer from cracking due to tensile failure. In order to increase soil tensile strength, discrete fibre reinforcement technique was proposed. An innovative tensile apparatus was developed to determine the tensile strength characteristics of fibre reinforced soil. The effects of fibre content, dry density and water content on the tensile strength were studied. The results indicate that the developed test apparatus was applicable in determining tensile strength of soils. Fibre inclusion can significantly increase soil tensile strength and soil tensile failure ductility. The tensile strength basically increases with increasing fibre content. As the fibre content increases from 0% to 0.2%, the tensile strength increases by 65.7%. The tensile strength of fibre reinforced soil increases with increasing dry density and decreases with decreasing water content. For instance, the tensile strength at a dry density of 1.7 Mg/m3 is 2.8 times higher than that at 1.4 Mg/m3. It decreases by 30% as the water content increases from 14.5% to 20.5%. Furthermore, it is observed that the tensile strength of fibre reinforced soil is dominated by fibre pull-out resistance, depending on the interfacial mechanical interaction between fibre surface and soil matrix. |
topic |
Fibre reinforced soil Tensile strength Direct tensile test Fibre content Dry density Water content |
url |
http://www.sciencedirect.com/science/article/pii/S1674775514000122 |
work_keys_str_mv |
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