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Geotechnical evaluation of loess modifications as the sustainable compacted soil liner material in solid waste landfill

This paper studied the anti-seepage ability of the modified loess by using attapulgite, which is abundant in local areas. The possibility of using the modified loess as the sustainable compacted soil liner material in a solid waste landfill was also considered in this research. The materials were th...

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Main Authors: Zhengrui Zhang, Siti Jahara Matlan, Hao Wang, Ahad Amini Pishro, Lili Zhang, Xian Gao, Zhao Liang, Xiaoyi Liu, Peigen Zhao
Format: Article
Language:English
Published: MDPI 2022
Subjects:
T1-995 Technology (General)
TA1-2040 Engineering (General). Civil engineering (General)
Online Access:https://eprints.ums.edu.my/id/eprint/42502/1/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/42502/
https://doi.org/10.3390/ma15144982
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spelling my.ums.eprints.425022024-12-31T03:21:01Z https://eprints.ums.edu.my/id/eprint/42502/ Geotechnical evaluation of loess modifications as the sustainable compacted soil liner material in solid waste landfill Zhengrui Zhang Siti Jahara Matlan Hao Wang Ahad Amini Pishro Lili Zhang Xian Gao Zhao Liang Xiaoyi Liu Peigen Zhao T1-995 Technology (General) TA1-2040 Engineering (General). Civil engineering (General) This paper studied the anti-seepage ability of the modified loess by using attapulgite, which is abundant in local areas. The possibility of using the modified loess as the sustainable compacted soil liner material in a solid waste landfill was also considered in this research. The materials were then evaluated using Nuclear Magnetic Resonance (NMR), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), and an Impermeability Mechanism (IM). The experimental results showed that the permeability coefficient of the attapulgite-modified loess decreases significantly with increasing attapulgite content. However, it becomes less significant when the attapulgite level approaches 10%. Both cases can meet the landfill impermeability requirements, based on the attapulgite content remaining at 10%, adding 15% lime or 5% cement, respectively. The triaxial consolidation and drainage experiment was carried out to investigate the shear strength of the materials under three different working circumstances. The stress–strain curves of each specimen were produced, as were the cohesion and internal friction angle values. This research lays the groundwork for using attapulgite-modified loess as a landfill lining material. It establishes a solid platform for future studies on attapulgite adsorption and purifying performance in landfills. MDPI 2022 Article NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/42502/1/FULL%20TEXT.pdf Zhengrui Zhang and Siti Jahara Matlan and Hao Wang and Ahad Amini Pishro and Lili Zhang and Xian Gao and Zhao Liang and Xiaoyi Liu and Peigen Zhao (2022) Geotechnical evaluation of loess modifications as the sustainable compacted soil liner material in solid waste landfill. Materials, 15. pp. 1-17. https://doi.org/10.3390/ma15144982
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
topic T1-995 Technology (General)
TA1-2040 Engineering (General). Civil engineering (General)
spellingShingle T1-995 Technology (General)
TA1-2040 Engineering (General). Civil engineering (General)
Zhengrui Zhang
Siti Jahara Matlan
Hao Wang
Ahad Amini Pishro
Lili Zhang
Xian Gao
Zhao Liang
Xiaoyi Liu
Peigen Zhao
Geotechnical evaluation of loess modifications as the sustainable compacted soil liner material in solid waste landfill
description This paper studied the anti-seepage ability of the modified loess by using attapulgite, which is abundant in local areas. The possibility of using the modified loess as the sustainable compacted soil liner material in a solid waste landfill was also considered in this research. The materials were then evaluated using Nuclear Magnetic Resonance (NMR), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), and an Impermeability Mechanism (IM). The experimental results showed that the permeability coefficient of the attapulgite-modified loess decreases significantly with increasing attapulgite content. However, it becomes less significant when the attapulgite level approaches 10%. Both cases can meet the landfill impermeability requirements, based on the attapulgite content remaining at 10%, adding 15% lime or 5% cement, respectively. The triaxial consolidation and drainage experiment was carried out to investigate the shear strength of the materials under three different working circumstances. The stress–strain curves of each specimen were produced, as were the cohesion and internal friction angle values. This research lays the groundwork for using attapulgite-modified loess as a landfill lining material. It establishes a solid platform for future studies on attapulgite adsorption and purifying performance in landfills.
format Article
author Zhengrui Zhang
Siti Jahara Matlan
Hao Wang
Ahad Amini Pishro
Lili Zhang
Xian Gao
Zhao Liang
Xiaoyi Liu
Peigen Zhao
author_facet Zhengrui Zhang
Siti Jahara Matlan
Hao Wang
Ahad Amini Pishro
Lili Zhang
Xian Gao
Zhao Liang
Xiaoyi Liu
Peigen Zhao
author_sort Zhengrui Zhang
title Geotechnical evaluation of loess modifications as the sustainable compacted soil liner material in solid waste landfill
title_short Geotechnical evaluation of loess modifications as the sustainable compacted soil liner material in solid waste landfill
title_full Geotechnical evaluation of loess modifications as the sustainable compacted soil liner material in solid waste landfill
title_fullStr Geotechnical evaluation of loess modifications as the sustainable compacted soil liner material in solid waste landfill
title_full_unstemmed Geotechnical evaluation of loess modifications as the sustainable compacted soil liner material in solid waste landfill
title_sort geotechnical evaluation of loess modifications as the sustainable compacted soil liner material in solid waste landfill
publisher MDPI
publishDate 2022
url https://eprints.ums.edu.my/id/eprint/42502/1/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/42502/
https://doi.org/10.3390/ma15144982
_version_ 1821003226208534528
score 13.232429

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