etc. This test is performed to check integrity of concrete, locate defects and evaluate effectiveness of repair works on bored piles, caissons, barrettes and diaphragm walls and other concrete structures.
When cast-in-situ piles are constructed, the following defects may occur, hence the main objectives in the testing is to provide the clients/consultants information about:-
a)
honeycombing due to inadequate vibration.
b)
segregation due to over vibration and improper concrete placement methods.
c)
washout of cement due to groundwater flow.
d)
cracks in pile shaft due to shrinkage.
e)
Inclusion of foreign material causing contamination of the concrete.
f)
necking of the pile due to collapse of sidewalls during withdrawal of the temporary casings.
This method on
integrity testing
requires prior pile preparation in that G.I. pipes need to be installed together with the steel reinforcement bars. There is no limit in the depth where the pile profile can be logged.
Philippines 
Malaysia 
