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http://dx.doi.org/10.5389/KSAE.2007.49.6.087

Study on Shear Strength Characteristic of Steel Particle-sand Mixture Influenced by Magnetic Force  

Cho, Joong-Ki (서울대학교 생태조경.지역시스템공학부 대학원)
Chang, Pyeong-Wook (서울대학교 생태조경.지역시스템공학부)
Kim, Seong-Pil (서울대학교 생태조경.지역시스템공학부)
Heo, Jun (서울대학교 생태조경.지역시스템공학부)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.49, no.6, 2007 , pp. 87-92 More about this Journal
Abstract
Strain-stress behavior of soil is of importance in dealing with geo-techniques which relate to bearing capacity, slope stability, earth pressure and many geo-technical problems. So understanding mechanism of the behavior and reinforcing soil to the required state has been an issue for many years. This paper presents the possibility of magnetic force in enhancing shear strength. To analyze the reinforcing effect, triaxial compression tests were performed on two sets of steel-sand mixtures, one of which is influenced by permanent magnet, NdFeB. With magnetic force under 50 kPa confining pressure, maximum shear strengths increased according to steel percentages but under 100 kPa, no significant changes in maximum shear strengths occurred. Therefore the analysis by Mohr's circles indicates that magnetic force converts the shearing characteristics of sand into those of clay.
Keywords
Steel particle - Sand mixture; Triaxial test; Magnetic force; Mohr-Coulomb failure criteria;
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