A study on unconfined of a chemically stabilized soil with cement and timber industrial ash (TIA)
properties of soft soil. A variety of stabilizers have been used for stabilizing soft soils. Portland cement, lime, Pulverized Fuel Ash (PFA), and Ground Granulated Blast Furnace Slag (GGBS) have been widely accepted for stabilizing soft soils. Such pozzolanic materials have been found to improve th...
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| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Published: |
2007
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/1858/ http://eprints.uthm.edu.my/1858/1/A_STUDY_ON_UNCONFINED_FELIX_LING_NGEE_LEH_2007.pdf |
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| Summary: | properties of soft soil. A variety of stabilizers have been used for stabilizing soft soils.
Portland cement, lime, Pulverized Fuel Ash (PFA), and Ground Granulated Blast Furnace
Slag (GGBS) have been widely accepted for stabilizing soft soils. Such pozzolanic materials
have been found to improve the physiochemical and engineering behavior of treated soils.
However, there are several obstacles to the commercial utilization of the ashes despite the
favorable laboratory findings on the performance of it. One of it is the high cost of importing
the fly ashes as PFA and GGBS are not common in Malaysia. The purpose of this study is to
experiment with another recently identified pozzolanic material in Malaysia, which is known
as Timber Industrial Ash (TIA). TIA was derived mainly from the controlled burning of
rubber wood bark from timber industries in Malaysia, which is available easily over the
country. Hence, the main objective of this study is to assess utilization of TIA and cement in
combination for improving the strength of soft soils. The combination of TIA and cement are
referred as blended cement in this study. Soil samples utilized in this study are disturbed
samples taken from The Research Centre for Soft Soils (RECESS) with 1.8m ± 0.1m in depth
under the ground surface. The samples were compacted manually in steel mould to form unit
weight of 14.5kN/m3± O.lkN/m3. Ten percents of blended cement were utilized (by dry unit
weight of soil) with the range of TIA replacement percentages are 10%, 13% and 15%
respectively. The samples were soaked in water for simulating the worst condition. The
laboratory results showed that the replacement of TIA in blended cement had improved its
strength |
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