ETA 19/0665 v03 of 22/01/2020 page 16 of 18
Inject adhesive
from the back of the drill hole without forming air voids.
Injection method for drill hole depth ≤ 250 mm (without overhead applications)
Inject the adhesive starting at the back of the hole, slowly withdrawing the
mixer with each trigger pull.
Fill approximately 2/3 of the drill hole to ensure that the annular gap
between the rebar and the concrete is completely filled with adhesive along
the embedment length.
After injection is completed, depressurize the dispenser by pressing the
release trigger. This will prevent further adhesive discharge from the mixer.
Injection method for drill hole depth > 250 mm or overhead applications
Assemble mixing nozzle HIT-RE-M, extension(s) and piston plug HIT-SZ
(see Table B6 and Table B7).
For combinations of several injection extensions use coupler HIT-VL-K.
A substitution of the injection extension for a plastic hose or a combination
of both is permitted.
The combination of HIT-SZ piston plug with HIT-VL 16 pipe and HIT-VL 16
tube supports proper injection.
Mark the required mortar level l
m
and embedment depth l
b
with tape or
marker on the injection extension.
Estimation:
l
m
= 1/3 · l
b
Precise formula for optimum mortar volume:
l
m
= l
b
· (1,2 · (ϕ
2
/ d
0
2
) - 0,2)
For overhead installation the injection is only possible with the aid of
extensions and piston plugs. Assemble HIT-RE-M mixer, extension(s) and
appropriately sized piston plug (see Table B6 and Table B7). Insert piston
plug to back of the hole and inject adhesive. During injection the piston plug
will be naturally extruded out of the drill hole by the adhesive pressure.
After injection is completed, depressurize the dispenser by pressing the
release trigger. This will prevent further adhesive discharge from the mixer.
Annex B8/5
of ETA N° 19/0665
Intended Use
Installation instructions
required mortar level