Drill 5 8 inch diameter holes six inches deep into the old concrete.
Tying concrete walls together.
This will provide lateral support to the wall but will allow some minor vertical movement without cracking.
Load your concrete epoxy adhesive into the epoxy gun according to the instructions included with the gun.
If the joint is wider than it is tall place the holes horizontally.
Insert the tip of the epoxy gun into the hole as far as you can.
This tie is used mostly on floor slabs.
Make these holes 12 inches on center horizontally or vertically depending upon the predominant orientation of the joint.
Lay the rebar in a grid with the bars spaced about 12 in 30 cm apart.
Provide a bond breaker on each leg of the angle and break out the end webs of the new blocks.
Pull the tip of the gun out of the hole as it fills.
The wall tie is used on light vertical mats of steel.
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Use rebar about 1 3 in 0 85 cm in diameter to reinforce the concrete.
If the joint is taller than wide place the holes vertically.
Place a layer of steel rebar of the way up the hole.
Fill the hole with epoxy slowly.
Then pack the cores with mortar around the angle and seal the joint between the new blocks and the old wall with a good elastomeric caulk.