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Correct product for filing large cracks/voids

Proud Highway

Member
Joined
Jun 3, 2010
Messages
19
I have a suspended slab garage floor and underneath is a 24x24 basement. The floor of this basement area was built with some really sloppy concrete work and prep, which resulted in larger than average shrinkage cracks and a little settling. I've kept an eye on these cracks for six years and there hasn't been any movement.

I'd like to made this basement area into a woodshop/man cave. It won't be seeing any harsh conditions or vehicles except for the occasional dual sport motorcycle. I also don't need the floor to be flat.

I've chased all the cracks in the floor with a special purposed v-shaped blade and have begun grinding the cracks and high spots. All of the cracks are pretty normal except for one running parallel to one wall for nearly the entire length (pictured below). This crack was larger and had quite a bit of vertical displacement. It's an an ugly one, but the photos probably exaggerate how bad it is because I've already chased it and removed the broken pieces. I've also begun grinding the high side.

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My plan for the floor is to put down an epoxy or good paint after proper surface prep, but I'm struggling on what to do with this large crack. For the ordinary cracks I was planning on using something like @LegacyIndustrial's Xtreme Set 100 crack/joint filler. But for the big one in the photos I'm not sure of the approach. Legacy Industrial also sells a Fiveton Epoxy Patch Kit (pictured below) https://www.legacyindustrial.net/products/concrete-repair/fiveton-epoxy-patch-en.html

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I'd appreciate anyone's advice/feedback on this.
 
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