Broken Concrete Step

The front edge has broken off of the concrete step. There is a large section on the corner missing (2 softball sizes). I want to repair it with concrete. I'm actually thinking about securing a piece of PT luimber to the frojnt permanently and pouring behind it.

Question: Do I need to do something to ensure that the new bonds with the existing concrete such as drill in to the existing and place rebar or secure steel mesh somehow? Also, what is the best material to use to fill this?

TIA,
Molo

Yes you do. You'll likely need to put some rebar in there or at least run some large bolts into it. I would also coat all the adjacent concrete in a bonding agent (looks like Elmers glue).

Tom

Three years ago I repaired a broken piece of concrete step using construction adhesive to secure the broken-off part. It is still there.

Polyurethane adhesives are great things. I used some in a hotmelt configuration from Tite-bond and attached some granite in place...on a sample, I was able to break a bond (it was a small contact area and a big lever), but in the process, it pulled crystals out of the granite, breaking the granite rather than the bond.

If the piece is no longer available, a bonding agent and some new stuff should hold especially if you glued in a couple pieces of small rebar (size would depend on how big the new piece needed to be).

I finished the main repair, now I need to fill some cracks. Can anyone reccomend a product/material for filling concrete cracks?

TIA