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Stabilization of artificial organic soil at room temperature using blended lime zeolite

Ling , Felix Ngee Leh and Kassim, Khairul Anuar and Abdul Karim, Ahmad Tarmizi and Tze, Wei Chan (2013) Stabilization of artificial organic soil at room temperature using blended lime zeolite. Advanced Materials Research, 723. pp. 985-992. ISSN 1022-6680

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Abstract

Organic content in soil is believed to inhibit formation of reaction products in lime stabilization which resulted in low gain of strength when dealing with organic soils. Zeolite, a kind of pozzolan with high CEC capacity is proposed to be use in this study in order to improve lime stabilization of organic soil. The effectiveness of blended lime zeolite in stabilization of organic soils was investigated by using two types of artificial organic soils with predetermined organic contents. Artificial organic soils were formed by mixing inorganic soil (commercial kaolin) with organic matter (commercial humic acid) at specific ratio. Initial consumption of lime for organic soils was determined in order to determine the minimum percentage of stabilizer required for each soil. Potential influencing factors that might affect the strength such as organic contents, contents of stabilizer, and curing periods were studied. The findings of the study showed that high organic contents and low lime contents resulted in lower gain of strength. However, it is found that slight replacement of lime with zeolite works well with low organic soil at long curing period which resulted in highest strength among all the mixes. Overall, longer curing periods will increase the strength of the soil in the order of 56 days > 28 days > 7 days. Nevertheless, the percentage of strength increment over curing periods is linear with the lime contents, which proved that lime is required for pozzolanic reaction.

Item Type: Article
Uncontrolled Keywords: humic acid (HA); kaolin; lime; organic soil; zeolite
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA703-711 Engineering geology. Rock mechanics. Soil mechanics.
Divisions: Faculty of Civil and Environmental Engineering > Department of Infrastructure and Geomatic Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 28 May 2014 08:55
Last Modified: 28 May 2014 08:55
URI: http://eprints.uthm.edu.my/id/eprint/5277
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