The Atterberg Limits Resolution Using Seismic Refraction Method

 

Rosli Saad

Rosli Saad Senior Lecturer (Dr.), Geophysics Section, School of Physics, Universiti Sains Malaysia, Penang, Malaysia
e-mail: rosli@usm.my

 

ABSTRACT

Seismic refraction techniques have been extensively used for many years in geotechnical practice and rock engineering. These techniques are employed in the field for geophysical investigations and in laboratory for determination of dynamic properties of rocks and soils. Since these techniques are nondestructive and easy to apply, they have been used increasingly in geotechnical engineering. One seismic refraction survey line was conducted across two boreholes BH3 and BH5. The Atterberg limits (LL, PL and PI) were calculated using laboratory test and equation related between Atterberg limits and Vp which identify from seismic refraction method. Result shows the Liquid limit, LL shows good correlation with 0% different, while Plastic limit, PL show moderate correlation with <28% different and Plastic index, PI shows poor correlation with <68.6% different. Generally the seismic refraction method can be use for Liquid limit and Plastic limit calculation.

Keywords: Seismic refraction; Atterberg limits; P-wave; Liquid limit; Plastic limit; Plasticity index

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