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Effect of lime on stabilization of mining waste from Sabah, Malaysia

This paper deals with the effect of lime on stabilization of mining waste from Sabah, Malaysia. In this study, different percentages of lime as well as fine material were added as additive with the mining waste. The engineering properties were measured by compaction test, unconfined compressive stre...

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Main Authors: Musta, Baba, Kassim, Khairul Anuar, Rajeev Kumar, Prasannan Pillai
Format: Article
Language:English
Published: Faculty of Civil Engineering 2010
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.utm.my/id/eprint/36670/1/KhairulAnuarKassim2010_EffectofLimeonStabilizationofMiningWaste.pdf
http://eprints.utm.my/id/eprint/36670/
http://civil.utm.my/mjce/files/2013/10/Effect-Of-Lime-On-Stabilization-Of-Mining-Waste-From-Sabah-Malaysia.pdf
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spelling my.utm.366702017-05-27T08:10:59Z http://eprints.utm.my/id/eprint/36670/ Effect of lime on stabilization of mining waste from Sabah, Malaysia Musta, Baba Kassim, Khairul Anuar Rajeev Kumar, Prasannan Pillai TA Engineering (General). Civil engineering (General) This paper deals with the effect of lime on stabilization of mining waste from Sabah, Malaysia. In this study, different percentages of lime as well as fine material were added as additive with the mining waste. The engineering properties were measured by compaction test, unconfined compressive strength tests and permeability tests. The mineral identification and microstructure were examined using X-ray diffraction (XRD) and Scanning Electron Microscopic (SEM). The compaction test indicated that the optimum moisture content varied with amount of lime content. The virgin mining waste showed low unconfined compressive strength value due to the very low cementing agent. The samples showed a rapid increase in shear strength when stabilized with lime content ranging from 2 to 8%. The rate of increase in strength is most rapid within two weeks of interaction. This is due to the pozzolanic reaction, which created more rigid - packed structure and small pore space at lime content as low as 2%. More addition of lime had increased the unconfined compressive strength due to the intensive pozzolanic reactions forming more cementitious mineral and created bridge-like structure. However the optimum percentage of lime required was 6% based on the unconfined compressive strength. Lime content in excess of the optimum (8% of lime) acted as filler or lubricant. Significant reduction in permeability to 1 x 10-7 m/s was observed at the end of the leaching test. This is due to the development of cementitious minerals and clogging of fine particle size in the pore spaces. Faculty of Civil Engineering 2010 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/36670/1/KhairulAnuarKassim2010_EffectofLimeonStabilizationofMiningWaste.pdf Musta, Baba and Kassim, Khairul Anuar and Rajeev Kumar, Prasannan Pillai (2010) Effect of lime on stabilization of mining waste from Sabah, Malaysia. Malaysian Journal of Civil Engineering, 22 (2). pp. 202-216. ISSN 1823-7843 http://civil.utm.my/mjce/files/2013/10/Effect-Of-Lime-On-Stabilization-Of-Mining-Waste-From-Sabah-Malaysia.pdf
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Musta, Baba
Kassim, Khairul Anuar
Rajeev Kumar, Prasannan Pillai
Effect of lime on stabilization of mining waste from Sabah, Malaysia
description This paper deals with the effect of lime on stabilization of mining waste from Sabah, Malaysia. In this study, different percentages of lime as well as fine material were added as additive with the mining waste. The engineering properties were measured by compaction test, unconfined compressive strength tests and permeability tests. The mineral identification and microstructure were examined using X-ray diffraction (XRD) and Scanning Electron Microscopic (SEM). The compaction test indicated that the optimum moisture content varied with amount of lime content. The virgin mining waste showed low unconfined compressive strength value due to the very low cementing agent. The samples showed a rapid increase in shear strength when stabilized with lime content ranging from 2 to 8%. The rate of increase in strength is most rapid within two weeks of interaction. This is due to the pozzolanic reaction, which created more rigid - packed structure and small pore space at lime content as low as 2%. More addition of lime had increased the unconfined compressive strength due to the intensive pozzolanic reactions forming more cementitious mineral and created bridge-like structure. However the optimum percentage of lime required was 6% based on the unconfined compressive strength. Lime content in excess of the optimum (8% of lime) acted as filler or lubricant. Significant reduction in permeability to 1 x 10-7 m/s was observed at the end of the leaching test. This is due to the development of cementitious minerals and clogging of fine particle size in the pore spaces.
format Article
author Musta, Baba
Kassim, Khairul Anuar
Rajeev Kumar, Prasannan Pillai
author_facet Musta, Baba
Kassim, Khairul Anuar
Rajeev Kumar, Prasannan Pillai
author_sort Musta, Baba
title Effect of lime on stabilization of mining waste from Sabah, Malaysia
title_short Effect of lime on stabilization of mining waste from Sabah, Malaysia
title_full Effect of lime on stabilization of mining waste from Sabah, Malaysia
title_fullStr Effect of lime on stabilization of mining waste from Sabah, Malaysia
title_full_unstemmed Effect of lime on stabilization of mining waste from Sabah, Malaysia
title_sort effect of lime on stabilization of mining waste from sabah, malaysia
publisher Faculty of Civil Engineering
publishDate 2010
url http://eprints.utm.my/id/eprint/36670/1/KhairulAnuarKassim2010_EffectofLimeonStabilizationofMiningWaste.pdf
http://eprints.utm.my/id/eprint/36670/
http://civil.utm.my/mjce/files/2013/10/Effect-Of-Lime-On-Stabilization-Of-Mining-Waste-From-Sabah-Malaysia.pdf
_version_ 1643649997598621696
score 13.211869

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