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Shearing rate effects on research centre for soft soils (RECESS) clay using cone penetration test (CPT)

Ayob, Azranasmarazizi and Yusoff, Nor Azizi and Bakar, Ismail and Azhar, Nur Abidah and Abd Aziz, Ameer Nazrin (2014) Shearing rate effects on research centre for soft soils (RECESS) clay using cone penetration test (CPT). In: International Integrated Engineering Summit (IIES 2014), 1-4 December 2014, Universiti Tun Hussein Onn Malaysia, Johor.


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A wide range of industrial applications, on land and offshore, require the solution of time domain problems and an associated understanding of rate effects in clay soils. In recent decades many researchers have examined the correlation between shear strength of soils and variation of shear strain rate and it is generally accepted that the strength increases by 1-5% for each order of magnitude increase in shear strain rate. This paper discusses the effects of penetration rate on the penetration resistance (qc) by using cone penetration test (CPT) test setup. The research had been conducted at RECESS and cone penetration test were used in three selected range of rate which were 0.5 cm/s, 1cm/s and 5cm/s. In addition, Mackintosh probe test had been considered as comparison with CPT test for the unconfined compressive strength. The result shows different penetration rate influenced the soil shear strength. For the slowest rate (0.5 cm/s), the shear strength was approximately 0.15% less compared to the standard rate (2 cm/s). However, for the highest rate (5 cm/s), the shear strength was 0.22% more than the reference rate (0.5 cm/s). In conclusion, it is suggested that the RECESS clay soil influenced by the rate effect and in agreement with previous research findings

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: speed of penetrations; CPT; Mackintosh probe; rate effect; shear strength
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA703-711 Engineering geology. Rock mechanics. Soil mechanics.
Divisions: Faculty of Civil and Environmental Engineering > Department of Infrastructure and Geomatic Engineering
Depositing User: Mrs. Nurhayati Ali
Date Deposited: 08 Jun 2015 06:42
Last Modified: 08 Jun 2015 06:42
URI: http://eprints.uthm.edu.my/id/eprint/6581
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