PURPOSE OF KODEN TEST
The purpose of koden test is to determine the geometry of the borehole, check the inclination and erosion of the borehole.
METHOD OF KODEN TEST
Koden test device operates based on reflected ultrasonic principle.
Koden test device consists of a sensor probe (to receive and transmit ultrasonic wave) connected to cables and a computer used to collect and print data. The probe is placed right at the center on the borehole. At the beginning of the test, the probe is dropped into the borehole, which transmits ultrasonic wave that respond to the borehole wall and collects it. Based on the time and velocity of ultrasonic wave, the distance of ultrasonic wave will be calculated, resulting in the shape of the borehole.
- TCVN 9395:2012 “Bored pile – Construction, check and acceptance”.