The Effectiveness of different rate of penetration with different Shapes in Cone Penetration Test (CPT) on Recess Batu Pahat Soft Soil

The cone penetration test (CPT) is widely used for the evaluation of in-situ soil
properties and site characterization. The direct results from the cone penetration
test are cone resistance, sleeve friction and pore water pressure. Today every part of the world experience a decrease in the good soil area for development and
therefore engineers need to have an alternative solution in construction on soft
soil. The aim of this study was to measure the tip resistance for the different type
of tips shape at different rate of penetration using the conventional cone, ball and
T-bar tips. The ball and T-bar tips offer several advantages to conventional tip
used for the in-situ estimation of penetration resistance and strength of soft soil.
The rates of penetration used were 5 mm/s, 20 mm/s, 40 mm/s. The results based
on tip shapes showed that the ball and T-bar give 2-4 times higher and 3-5 times
higher respectively than the standard tip. For Batu Pahat clay, tips with higher
surface area gave better results and based on the tip shapes used in this, the T-bar
tip gave better results. For the penetration rate .
Keywords: Rate of penetration, Cone penetration test, Cone resistance, Ball shape,
T-bar shape, Tip resistance.