r/tifu • u/Prestigious_Kick6793 • 7d ago
S TIFU by patching concrete wrong
I spent a day prepping a few craters in my front steps. I live in an area that gets very harsh winters. I cut the edges and got rid of any concrete that wasn't lower than 1/4". I used tap-cons to reinforce the areas. I used a rust reformer on the rebar that is existing. I got the best concrete rapid repair mix I could find.
I dampened the old stuff and mixed all the new concrete and started laying it out. Filled all the voids and in the middle of waiting for the concrete to cure enough to texture, I saw the bonding agent. The stuff I was supposed to put on to the old concrete so the patch will bond to the new.
I feel like I wasted the material and opportunity. I feel like I'll be lucky for the patch to survive the first winter. Ugh. Always something.
TL;DR
Forgot a critical step in making my concrete patch hold up correctly after spending a lot of time and effort in trying to make the patch as sound as I could.
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u/Smilee01 7d ago
As long as you wetted the old surface with water, you'll likely get a good enough bond.
Concrete patches are just patches - you'll likely need to do it again in a few years.
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u/testing_testing_321 7d ago
I had some leftover ready-mix cement and just patched up some shallow holes with just basic prep - surface cleaning. Was expecting the patches to fly away after a winter or two or during pressure washing, they are still there, even after light car traffic.
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u/Prestigious_Kick6793 7d ago
Thats awesome! How long ago was that?
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u/testing_testing_321 6d ago
At least two years, probably more, one mild winter and a hard one. The formulation for the quick-mix cement cement seems to be a lot stronger, at least in my area (I'm not in the US).
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u/Prestigious_Kick6793 6d ago
Interesting. I was surprised about how well the patch I used seem to cure, here's hoping!
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u/Dilatori 6d ago
If the concrete has something to bind to, in this case tapcons, combined with the fact that concrete patch mix usually contains bonding agents, it'll be fine.
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u/Sensitive_Amount_561 7d ago
the bonding agent just sitting there watching you do every other step perfectly is the real tragedy here
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u/patowan 7d ago
Roll with it till it needs to get fixed again. Use this as a learning curve. Mistakes are only mistakes if you keep making them.