Fibrous Peat Research Paper

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table of content Page Table of content i List of Tables iv List of Figures v List of annotations vii Chapter 1 INTRODUCTION 1.1 Research Background. 1 1.2 Problem Statement. 4 1.3 Research Aim and Objectives. 5 1.4 Outline. 6 Chapter 2 LITERATURE REVIEW 2.1 Overview. 8 2.2 Common Facts in Peat. 8 2.3 Formation of Peat Land. 14 2.4 Index Properties of Peat. 17 2.5 Engineering Behaviour of Peat. 20 2.5.1 High initial permeability in fibrous peat. 20 2.5.2 Compressibility of fibrous peat. 22 2.5.3 High angle of frictional resistance in peat. 23 2.5.4 Undrained shear strength …show more content…

In the physical feature of peat, a range of 100% to 1300% of field water content in peat could result in high buoyancy and high pore volume which in turn leads to low bearing capacity and bulk density. The above Table 2.2 also shows that fibrous peat water tends to be in the range of 489% to 1590%. According to Huat (2004), fibrous peat likely to have higher water content than humified peat and a decrease of mineral content tends to increase the water content in peat. East Malaysia peat recorded a range of 200% to 2207% of natural water content (Huat, 2004). The typical bulk density for peat is noted within the range of 0.84 to 1.23 Mg/m3 in Table 2.2. However, Hobbs (1986) stated that the bulk density of peat is typically similar to or less than that of water due to the presence of entrapped gases in peat. The values of bulk density in peat usually remain relatively constant at the range of 1.03Mg/m3 and do not vary with the properties of peat (Hobbs, 1986). Meanwhile, peat have a tendency to be acidic depending to the rock types in the area draining into the peat land (Huat, 2004). The recorded pH in Table 2.2 displays the peat range from acidity of 3.3 to slight neutral alkaline condition of 7.3 in common. According to Davies et al. (2010), peat in Malaysia has pH levels as low as …show more content…

The results showed that approaching failure was not seen even the shear stress was beyond 140kPa for both remoulded peat and remoulded peat fibre and the tests had to be stopped due to over axial compression on the peat samples. The samples however showed gradual transition from a linear elastic to a linear strain-hardening stress–strain response up to 5% for both remoulded peat and remoulded peat fibre specimens (Hendry, 2011). Michalowski & Cermak (2002) had observed this behaviour which similar in the fibre-reinforced sand triaxial tests and believed that the increasing reinforcement perpendicular to the major principal stress direction could be the

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