1- Dimensional consolidation behaviour of organic soil

Thian, Ying Ying (2006) 1- Dimensional consolidation behaviour of organic soil. Universiti Malaysia Sabah. (Unpublished)

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Abstract

This paper presents a review of the consolidation behaviour of organic soil. One dimensional consolidation is the settlement due to changes of thickness occurs when soil sample is subjected to an increase in effective stress, where no changes in lateral dimension take place. Organic soil is considered as problematic soil for its high compressibility, where structures are seldom built on organic soil. For this paper, there are three organic soils collected from different locations in Kota Kinabalu were tested for their basic properties and the consolidation behaviours. The e-log p curves showed that the soil samples are normally consolidated organic soils. From the tests, the compression index is increasing with the increase in organic content. This means the organic content in soil contributes to the compressibility of soil. The coefficient of volume compressibility is directly proportional to the organic content in soil. But it will decrease when load is increasing. The influence of organic content in soil to void ratio is relative, where increase in organic content will cause increase in void ratio. However, the increase of load will reduce the void ratio in soil. There are two method used in determining the coefficient of consolidation, which are Casagrande method and Taylor method. The coefficient of consolidation will decline when the pressure or organic content is rising. The t₅₀ and t₉₀ of organic soil samples are increase proportionally to the pressure and organic content in soil. The tests also showed that the increase in organic content will cause increase in water content, but decrease in specific gravity. From the three samples, the organic soil collected from the site located opposite University Malaysia Sabah has the highest compression index, which means it is most compressible.

Item Type: Academic Exercise
Uncontrolled Keywords: consolidation behaviour, organic soil, dimension, pressure
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Divisions: SCHOOL > School of Engineering and Information Technology
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 09 Jun 2014 04:03
Last Modified: 13 Oct 2017 04:51
URI: http://eprints.ums.edu.my/id/eprint/9168

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