Need help with patching with concrete mix


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Old 06-12-21, 02:00 PM
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Need help with patching with concrete mix

Hey guys,

I am going to attempt my first patching the below driveway/foundation gap soon. I plan to do this when not raining. The youtube videos that I saw were only patching concrete patch mix into existing concrete gaps etc, but one question I have is, that the bottom of the gap seems to be gravel. Is it ok to just pour in concrete mix on gravel?

The exact steps I plan to do are:

1. Break off any lose parts with trowel / chisel etc.
2. Use an air compressor / brush / etc to get as much leaves/dirt/stuff off of that gap, and what will remain is likely to be just gravel.
3. Spray a mist of water into that gap for concrete patch to stick better
4. Use a trowel to fill in that gap and smooth it out with concrete mix. (I am not sure what I should use, but I imagine the Quikrete Quick-Setting Cement Concrete Mix would do)

Does this sound right? If not, which methods would you do to fix this?



 
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Old 06-12-21, 02:05 PM
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Sure, just be aware, concrete patching is not waterproof so it may help but may not be the final waterproof solution!
 
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Old 06-12-21, 03:14 PM
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The gaps and cracks look rather small. I'd consider using mortar instead.
 
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Old 06-12-21, 03:35 PM
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Concrete mix is not the product to use for patching or feathering.
 
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Old 06-12-21, 03:41 PM
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I see, thank you all. I'll consider using mortar mix as suggested below.

Also, all the videos that I've seen patched on existing slab etc, but since the bottom of that step is I believe is gravel, it's ok to just (after clearing up other debris) pouring over/inside that gap, right? I think all the videos emphasized that the mix will not stick if it's free floating (like gravel) so I was pretty confused in that aspect. (maybe I'm worrying too much)
 
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Old 06-13-21, 01:51 PM
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Looks like it used to have tar there. Would this work? https://www.homedepot.com/p/Quikrete...6010/203604214
 
 

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