Field instrumentation for performance assessment of Geobarrier System

The saturated hydraulic conductivity of a coarse-grained material is normally higher than that of a fine-grained material. However, the unsaturated hydraulic conductivity of the coarse-grained material decreases much faster than that of the fine-grained material with increasing matric suction and co...

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Main Authors: Rahardjo, Harianto, Qian, Zhai, Satyanaga, Alfrendo, Leong, Eng Choon, Wang, Chien Looi, Wong, Johnny Liang Heng
Other Authors: Delage, P.
Format: Article
Language:English
Published: 2019
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Online Access:https://hdl.handle.net/10356/84526
http://hdl.handle.net/10220/50114
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-845262020-03-07T11:43:34Z Field instrumentation for performance assessment of Geobarrier System Rahardjo, Harianto Qian, Zhai Satyanaga, Alfrendo Leong, Eng Choon Wang, Chien Looi Wong, Johnny Liang Heng Delage, P. Cui, Y.-J. Ghabezloo, S. Pereira, J.-M. Tang, A.-M. School of Civil and Environmental Engineering Field Instrumentation Engineering::Civil engineering Geobarrier System The saturated hydraulic conductivity of a coarse-grained material is normally higher than that of a fine-grained material. However, the unsaturated hydraulic conductivity of the coarse-grained material decreases much faster than that of the fine-grained material with increasing matric suction and consequently the coarse-grained material can be less permeable than the fine-grained material in unsaturated condition. A capillary barrier system with a fine-grained layer over a coarse-grained layer will act as a hydraulic barrier to minimize rainwater infiltration into the original soil. Geobarrier system (GBS) which can function as both a cover system (i.e. prevention of rainwater infiltration) and a retaining structure was designed and will be constructed at Orchard Boulevard in Singapore. Numerical simulations were carried out to determine the optimallocations of instruments that can be used to assess the performance of GBS during dry and wet periods. The monitoring results from tensiometers, earth pressure cells and weather station would be used to validate the results from the numerical analyses Published version 2019-10-09T06:43:29Z 2019-12-06T15:46:33Z 2019-10-09T06:43:29Z 2019-12-06T15:46:33Z 2016 Journal Article Rahardjo, H., Qian, Z., Satyanaga, A., Leong, E. C., Wang, C. L., & Wong, J. L. H. (2016). Field instrumentation for performance assessment of Geobarrier System. E3S Web of Conferences, 9, 15006-. doi:10.1051/e3sconf/20160915006 https://hdl.handle.net/10356/84526 http://hdl.handle.net/10220/50114 10.1051/e3sconf/20160915006 en E3S Web of Conferences © 2016 The Author(s) (published by EDP Sciences). This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 6 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Field Instrumentation
Engineering::Civil engineering
Geobarrier System
spellingShingle Field Instrumentation
Engineering::Civil engineering
Geobarrier System
Rahardjo, Harianto
Qian, Zhai
Satyanaga, Alfrendo
Leong, Eng Choon
Wang, Chien Looi
Wong, Johnny Liang Heng
Field instrumentation for performance assessment of Geobarrier System
description The saturated hydraulic conductivity of a coarse-grained material is normally higher than that of a fine-grained material. However, the unsaturated hydraulic conductivity of the coarse-grained material decreases much faster than that of the fine-grained material with increasing matric suction and consequently the coarse-grained material can be less permeable than the fine-grained material in unsaturated condition. A capillary barrier system with a fine-grained layer over a coarse-grained layer will act as a hydraulic barrier to minimize rainwater infiltration into the original soil. Geobarrier system (GBS) which can function as both a cover system (i.e. prevention of rainwater infiltration) and a retaining structure was designed and will be constructed at Orchard Boulevard in Singapore. Numerical simulations were carried out to determine the optimallocations of instruments that can be used to assess the performance of GBS during dry and wet periods. The monitoring results from tensiometers, earth pressure cells and weather station would be used to validate the results from the numerical analyses
author2 Delage, P.
author_facet Delage, P.
Rahardjo, Harianto
Qian, Zhai
Satyanaga, Alfrendo
Leong, Eng Choon
Wang, Chien Looi
Wong, Johnny Liang Heng
format Article
author Rahardjo, Harianto
Qian, Zhai
Satyanaga, Alfrendo
Leong, Eng Choon
Wang, Chien Looi
Wong, Johnny Liang Heng
author_sort Rahardjo, Harianto
title Field instrumentation for performance assessment of Geobarrier System
title_short Field instrumentation for performance assessment of Geobarrier System
title_full Field instrumentation for performance assessment of Geobarrier System
title_fullStr Field instrumentation for performance assessment of Geobarrier System
title_full_unstemmed Field instrumentation for performance assessment of Geobarrier System
title_sort field instrumentation for performance assessment of geobarrier system
publishDate 2019
url https://hdl.handle.net/10356/84526
http://hdl.handle.net/10220/50114
_version_ 1681049741297713152