|
There are
mainly four reasons for this test:
(i) To check and verify the bond strength
between soil and grout adopted during the design of soil nails. This is
the
main objective of conducting soil nail pull-out test.
(ii)
To determine the bond strength between
soil and grout for future design purpose. For this, the test
nails should be loaded to determine the
ultimate soil/grout bond with a upper limit of 80% of ultimate tensile
strength
of steel bars.
iii)
To check if there is any slippage or creep
occurrence.
(iv) To check the elastic and
plastic
deformations of test nails (observed during the repeated loading and
unloading cycles of soil nails).
|
