The behaviour of granitic residual soil with POFA and lime additives
Granitic residual soil is well-known as having potential to shear failure. Utilization of additive is one method that can be applied to stabilize the soil. This study was conducted to determine the effectiveness of using POFA which is a local available material as one alternative in stabilizing the...
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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/1967/ http://eprints.uthm.edu.my/1967/1/THE_BEHAVIOUR_OF_GRANITIC_RESIDUAL_SOIL_AMIR__KHAN_SUWADI_2007.pdf |
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| Summary: | Granitic residual soil is well-known as having potential to shear failure. Utilization of additive is
one method that can be applied to stabilize the soil. This study was conducted to determine the
effectiveness of using POFA which is a local available material as one alternative in stabilizing
the soil by increasing its shear strength. A series of laboratory tests were conducted in
determining the physical properties, compaction and shear strength on granitic residual soil. The
soil samples; both disturbed and undisturbed were obtained from the vicinity of Taman Bukit
Perdana, Batu Pahat, Johor. The samples were divided into three categories for the compaction
and shear strength tests; (i) origin granitic residual soil, (ii) soil + POFA (passing 425um
sieving) + lime and (iii) soil + POFA (passing 300u.m sieving) + lime. The optimum percentage
that yields the highest strength is at soil + 8%POFA (passing 300p.m sieving) + 8%lime. All
proportions are measured by weight. Analysis also shows that mixing soil with POFA and lime
increasing shear strength of soil. The highest value of shear strength that was obtained from this
study is 100.55 kPa. Permeability tests have shown that the value of k in the range of 1.1689 x
10"6to 1.9956 x 10-7 m/s were produced from mixture with the percentages of 8 % POFA and
the size of 425 urn + 8% lime. Besides that, mixtures with POFA 8% (300 um) and 12% (300
um and 425 um) also substantially reduced the k value which is suitable for the construction of
earth dam core. |
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