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    • Volume 09 No. 1, Maret 2013
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    PHYSICAL CHARACTERISTICS AND SHEAR STRENGTH OF CLAY STABILIZED USING LIME AND BAGASSE ASH

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    Date
    2013-03
    Author
    Susanto, Agus
    Renaningsih
    Puri, Dhamis Tri Ratna
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    Abstract
    Based on the research conducted by Wiqoyah (2003), soil in Jono Village, Tanon, Sragen, is unorganic clay with high plasticity. In the rainy season, the soil becomes soft and its strength is very weak while in the dry season it becomes hard and cracks due to shrinkage. Therefore, it is necessary to examine its physical properties and mechanics to make the strength of construction best fit with the soil properties used as basic building through stabilization. In this study soil is stabilized using 8% lime and bagasse ash with variation of 0%, 3%, 6%, 9%, 12%, and 15% of the weight of the sample. The test of soil stabilitsation results include a series of tests covering specific gravity, water content, atterberg limits, sieve analysis, hydrometer, and standard Proctor. The Direct Shear Test was done with 3 and 7 days of care.The findings show that the soil stabilization based on AASHTO classification system include the group of A-5, A-2-5 and A-2-4 while based on the USCS classification, the stabilization results involve the SC and SM. In the soil of stabilization results, along with the increasing of the percentage of bagasse ash addition the value of specific gravity, liquid limit, plastic limit, plasticity index and percentage pass sieve 200 tend to decrease, the shrinkage limit turns to increase. From the standard Proctor test the optimum moisture content tends to decrease and the dry weight has a tendency to increase. Shear strength values with 3 days and 7 days of care tends to increase along with the addition of bagasse ash. Cohesion and friction angle values are the highest in the soil sample with 7 days of treatment with the addition of 15% bagasse ash which amount 0,360 kg/cm 2 and 51,23°.
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    http://hdl.handle.net/11617/3053
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