Cross Hole Sonic Logging Test in Kenya, Uganda, Tanzania, Rwanda, Somalia, Sudan, DRC Congo, Mozambique, Zambia, and the rest of the East African region.
Cross Hole Sonic Logging (CSL) test is a non-destructive testing technique used to determine the integrity of the concrete pile or foundation. The test involves transmitting ultrasonic waves between two probes, which are inserted in pre-drilled parallel holes in the concrete. The probes are typically spaced 1-3 meters apart, and the test is usually carried out at intervals of 1-2 meters along the length of the pile or foundation.
During the test, one probe acts as a transmitter, and the other probe acts as a receiver. The transmitter sends ultrasonic pulses, which travel through the concrete to the receiver. The time taken for the pulse to travel between the two probes is recorded and used to calculate the velocity of the ultrasonic waves in the concrete.
The velocity of the ultrasonic waves in the concrete is an indicator of the quality of the concrete, and any defects or anomalies within the concrete will cause a change in the ultrasonic wave velocity. By comparing the ultrasonic wave velocities at different depths, the CSL test can identify the presence of defects such as cracks, voids, and delamination in the concrete.
CSL testing is commonly used in the construction industry to verify the integrity of concrete piles and foundations, and it is also used in the maintenance and rehabilitation of existing structures. The test is generally considered to be an accurate and reliable method for assessing the quality of concrete, and it can help to identify potential problems before they become more serious.