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Unconfined compressive strength characteristics of stabilized peat

Deep stabilized peat columns could be considered as attractive and economical foundation for construction of highway embankments on deep peat ground. However, peat itself is very problematic and failure in the formation of the columns with adequate strength was often attributed to unsuitable type an...

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Main Authors:	Wong L.S., Hashim R., Ali F.
Other Authors:	55504782500
Format:	Article
Published:	Academic Journals 2023
Subjects:	Binder Organic matter Silica sand Sodium chloride Unconfined compressive strength
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spelling	my.uniten.dspace-304522023-12-29T15:47:59Z Unconfined compressive strength characteristics of stabilized peat Wong L.S. Hashim R. Ali F. 55504782500 8640798800 14420764600 Binder Organic matter Silica sand Sodium chloride Unconfined compressive strength Deep stabilized peat columns could be considered as attractive and economical foundation for construction of highway embankments on deep peat ground. However, peat itself is very problematic and failure in the formation of the columns with adequate strength was often attributed to unsuitable type and insufficient dosage of binder added to the organic soil. Organic matter in peat was known to impede the cementing process in the soil, thus, retarding the early strength gain of stabilized peat. To evaluate the strength characteristics of stabilized peat, laboratory investigation on early strength gain of the stabilized soil was conducted to formulate a suitable and economical mix design that can be effectively used for the soil stabilization. To achieve such purpose, the study examined the effect of binder, sodium chloride as cement accelerator and silica sand as filler on the unconfined compressive strength of stabilized peat after 7 days of curing in water. Binders used to stabilize the peat were Ordinary Portland cement, ground granulated blast furnace slag, sodium bentonite, kaolinite, lime and bentonite. All the stabilized peat specimens were tested using unconfined compression apparatus. The test results revealed that the stabilized peat specimen (80% OPC: 10% GGBS: 10% SB) with addition of 4% sodium chloride by weight of binder and 50% well graded silica sand by volume of wet peat at 300 kg m-3 binder dosage yielded the highest unconfined compressive strength of 196 kPa. This implied that, the higher the dosage of silica sand in stabilized peat, the more solid particles will be available for the binder to unite and form a load sustainable stabilized peat. It could be summarized that, as the rate of hydration process of stabilized peat was accelerated by inclusion of sodium chloride, the solid particles contributed to the hardening of stabilized peat by providing the cementation bonds to form between contact points of the particles. � 2011 Academic Journals. Final 2023-12-29T07:47:59Z 2023-12-29T07:47:59Z 2011 Article 10.5897/SRE10.060 2-s2.0-79958802141 https://www.scopus.com/inward/record.uri?eid=2-s2.0-79958802141&doi=10.5897%2fSRE10.060&partnerID=40&md5=b1142e093e5f2c0df07b4f66b9db0c1f https://irepository.uniten.edu.my/handle/123456789/30452 6 9 1915 1921 All Open Access; Green Open Access; Hybrid Gold Open Access Academic Journals Scopus
institution	Universiti Tenaga Nasional
building	UNITEN Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Tenaga Nasional
content_source	UNITEN Institutional Repository
url_provider	http://dspace.uniten.edu.my/
topic	Binder Organic matter Silica sand Sodium chloride Unconfined compressive strength
spellingShingle	Binder Organic matter Silica sand Sodium chloride Unconfined compressive strength Wong L.S. Hashim R. Ali F. Unconfined compressive strength characteristics of stabilized peat
description	Deep stabilized peat columns could be considered as attractive and economical foundation for construction of highway embankments on deep peat ground. However, peat itself is very problematic and failure in the formation of the columns with adequate strength was often attributed to unsuitable type and insufficient dosage of binder added to the organic soil. Organic matter in peat was known to impede the cementing process in the soil, thus, retarding the early strength gain of stabilized peat. To evaluate the strength characteristics of stabilized peat, laboratory investigation on early strength gain of the stabilized soil was conducted to formulate a suitable and economical mix design that can be effectively used for the soil stabilization. To achieve such purpose, the study examined the effect of binder, sodium chloride as cement accelerator and silica sand as filler on the unconfined compressive strength of stabilized peat after 7 days of curing in water. Binders used to stabilize the peat were Ordinary Portland cement, ground granulated blast furnace slag, sodium bentonite, kaolinite, lime and bentonite. All the stabilized peat specimens were tested using unconfined compression apparatus. The test results revealed that the stabilized peat specimen (80% OPC: 10% GGBS: 10% SB) with addition of 4% sodium chloride by weight of binder and 50% well graded silica sand by volume of wet peat at 300 kg m-3 binder dosage yielded the highest unconfined compressive strength of 196 kPa. This implied that, the higher the dosage of silica sand in stabilized peat, the more solid particles will be available for the binder to unite and form a load sustainable stabilized peat. It could be summarized that, as the rate of hydration process of stabilized peat was accelerated by inclusion of sodium chloride, the solid particles contributed to the hardening of stabilized peat by providing the cementation bonds to form between contact points of the particles. � 2011 Academic Journals.
author2	55504782500
author_facet	55504782500 Wong L.S. Hashim R. Ali F.
format	Article
author	Wong L.S. Hashim R. Ali F.
author_sort	Wong L.S.
title	Unconfined compressive strength characteristics of stabilized peat
title_short	Unconfined compressive strength characteristics of stabilized peat
title_full	Unconfined compressive strength characteristics of stabilized peat
title_fullStr	Unconfined compressive strength characteristics of stabilized peat
title_full_unstemmed	Unconfined compressive strength characteristics of stabilized peat
title_sort	unconfined compressive strength characteristics of stabilized peat
publisher	Academic Journals
publishDate	2023
_version_	1806428451849109504
score	13.211869

Unconfined compressive strength characteristics of stabilized peat

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