“THE INCREASING OF UNDRAINED SHEAR STRENGTH AND SHEAR MODULUS OF SOFT BANGKOK CLAY BY SILICA POWDER USING UNCONFINED COMPRESSION TEST WITH BENDER ELEMENT”. GEOMATE Journal 18, no. 69 (May 30, 2020): 118–123. Accessed April 21, 2026. https://geomatejournal.com/geomate/article/view/1518.