THE INCREASING OF UNDRAINED SHEAR STRENGTH AND SHEAR MODULUS OF SOFT BANGKOK CLAY BY SILICA POWDER USING UNCONFINED COMPRESSION TEST WITH BENDER ELEMENT | Zendy

Pithan Pairojn | Zendy

Open Access

THE INCREASING OF UNDRAINED SHEAR STRENGTH AND SHEAR MODULUS OF SOFT BANGKOK CLAY BY SILICA POWDER USING UNCONFINED COMPRESSION TEST WITH BENDER ELEMENT

Author(s) -

Pithan Pairojn

Publication year - 2020

Publication title -

international journal of geomate

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.267

H-Index - 17

eISSN - 2186-2990

pISSN - 2186-2982

DOI - 10.21660/2020.69.9311

Subject(s) - shear (geology) , geotechnical engineering , materials science , shear strength (soil) , direct shear test , shear modulus , composite material , compression test , modulus , triaxial shear test , geology , compression (physics) , soil water , soil science

The present study aims to increase the undrained shear strength and shear modulus of soft Bangkok Clay soil by silica powder when they were subject to unconfined compression test with the bender element. The shear wave velocity was measured using a pair of bender elements installed at the top cap and pedestal of the unconfined cell. The undrained shear strength was conducted step by step so that the variation of shear modulus could be determined. The undrained shear strength was carried out at the strain rate of 1% per minute during which the shear modulus was continuously recorded. The result found that when the soil was mixed with silica powder an increased rate, the undrained shear strength and shear modulus were increased but the strain was decreased. Therefore, the improvement of soil quality using silica powder can be increased the efficiency of the construction such as embankment and road construction.

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