Improvement of Shear Strength of Sandy Silt Soil by Mixing Optimum Percentage of Fly Ash: A Study
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 8
Abstract
Strength of soil is very important parameter for any civil construction. Soft and weak soil is more liable to differential settlements, less shear strength and high compressibility. Hence it is necessary to check and improve bearing strength of soil. Different types of soil have different strength. Soil strength can be increased or decreased by mixing some material with the soil like fly ash, lime, silica fume, plastics, synthetic fibers, reinforcement fibers etc. This paper represents the shear strength parameters of sandy silt soil by blending with fly ash in different proportion. Soil is mixed with fly ash at 5%, 10%, 15%, and 20%. The Optimum Water Content increases and Dry Density decreases with increases in fly ash due to progressive increasing silt particles in soil. The shear strength of the soil enhance due to presence of fly ash. So, fly ash has a potential to improve engineering characteristics of sandy silt soil. Hence the main objective of this work is to utilize industrial waste like fly ash to improve the strength of sandy silt soil with its optimum percentage of fly ash. The cohesion is maximum for 5% fly ash in granular soil mixture and is decreased gradually and attains maximum value for 15% fly ash granular soil mixture. This study revealed that Fly Ash content more than 15% may not probably cause any additional improvement for the stabilized soil.
Authors and Affiliations
Rasna Sharma, Dr. M. K. Trivedi
Keywords
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