Abstract
The JKR probe test is a popular field test in Malaysia, and is especially used in soft soil areas to determine bearing capacity. However the correlation of undrained shear strength (Su) and the JKR probe test is not available at this moment. This study was performed to develop an empirical correlation of JKR probe and undrained shear strength of soft to stiff soil. In order to produce the correlation, the JKR probe test and the vane shear test have been performed at Universiti Tun Hussein Onn Malaysia (UTHM). Six JKR probe tests and 12 field vane shear tests were performed in close proximity to obtain good correlation. The results show that undrained shear strength and JKR probe can be correlated as Su=18J0.3. The proposed correlations will serve as a reference for engineers in estimating undrained shear strength, especially in low-risk construction design.
Highlights
The JKR probe is a simple site investigation procedure that is relatively inexpensive
In 2013, Fatnanta et al [6] proposed a correlation based on field vane shear test and Mackintosh probe test performed at Pekan Baru, Indonesia
To develop the correlation of Su and M, the JKR probe and the vane shear tests were performed at the Research Centre for Soft Soil (RECESS) in Universiti Tun Hussein Onn Malaysia (UTHM)
Summary
The JKR probe is a simple site investigation procedure that is relatively inexpensive. The probe is often used in Malaysia, especially for preliminary site investigation, to assess the subsoil layer and the bearing capacity of soils. It can be used effectively to identify soft or weak layer materials or slip plane failure [1]. For practical application, the results of JKR Probe and Mackintosh Probe may be considered equivalent [1].
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