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Yaacob, Aizuddin Faiz (2008) SOIL IMPROVEMENT ON MINING SAND USING PULVERIZED FUEL ASH (PFA) WITH LIME ADDITIVE. Universiti Teknologi Petronas. (Unpublished)

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The state of Perak was famous of a location of tin mines long ago due to the rich of tin contained in soil and rocks especially in Kinta Valley and harvested leaving abandoned tin mines. Pulverized Fuel Ash (PFA) is the byproduct of a coal burning to generate energy from power plant and this byproduct is useful in stabilizing soil under specific condition. This project was carried out to find the highest unconfined compressive strength from the mix between mining sand with PF A and lime as additive. Soil improvement on mining sand could improve the strength carried by the soil. From the experiment of this project, the optimum lime found is 10% lime. The 10% lime then mixed with mining sand and PF A range from 5% until 25% for 5 different percentage mixes. The mixtures then analyzed in term of particle distribution, compaction test and unconfined compression test. For unconfined compression test, the curing periods implemented for the sample mix before tested and the curing periods selected are 7, 14, and 28 days. The sieve analysis for each of the mixtures shows significant improvement on percentage of the silt and clay that is for 3% of raw mining sand to 11% for Mix 5. The standard proctor test conducted shows that the highest maximum dry density could be achieved at 2.1851 Mg/m3 at Mix 2. The Undrained Shear Strength shows significant increase based on curing period and the increasing percentage of PF A. The highest undrained shear strength occurs at Mix 5 for 28 days curing period that is at 6.675 MPa. This shows that for more percentage of PFA, the strength is increased. The curing period of the mixtures also affect the undrained shear strength. For longer curing period, the undrained shear strength is higher as shown for Mix 3 that is at 305.53 kPa for 7 days while at 3.935 MPa for 28 days of cunng.

Item Type: Final Year Project
Academic Subject : Academic Department - Civil Engineering - Water and environment - Water
Subject: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Engineering > Civil
Depositing User: Users 2053 not found.
Date Deposited: 30 Sep 2013 16:55
Last Modified: 25 Jan 2017 09:45
URI: http://utpedia.utp.edu.my/id/eprint/7754

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