If appropriate preparations are fulfilled, it is possible to
re-inject Ultra. Using 1-component polyurethane, this can also be
executed within reasonable time (days) without cleaning the hose between
Supply hoses must be dazzled.
Cement suspensions and other self hardening materials must be
evacuated from the hose by rinsing (pressure up to 1,5 bar) or by
Injection grouting is disappearing into the hose without pressure
- and you do not succeed in finding the supply tube in the other end? Solution:
Create a "floating plug" that fasten in the enter of
the supply tube on the other end like this:
Insert some small wooden pieces (5mm pieces of matches?) into the
Then stuff in a small quantity of tow, hemp, paper or something
similar by using a steel wire and start the injection. If you quite soon
observe some pressure in the system, you may probably accomplish the
injection as normally.
If not, you may have to repeat the procedure until you succeed
establishing the plug.
When injecting cement suspensions, a sufficient level of pressure
and volume must
be maintained to avoid straining out particles (flushing through