Filling slab holes

[NitroPress]

The problem: two big empty spaces where my 4-post lifts used to be.

The real problem: 32 1+ inch holes in the gray/speckled epoxy floor. And a clause in the divorce agreement that says I will fix them.

The holes might go through the slab into the gravel underlay, so I will ram a golf ball or something down to plug against excessive fill under the slab. Fill should be no more than about a six inch cylinder.

What's the best compound to fill holes like this, with good work time, easy pour and easy to finish very smoothly on top?

 

[NUTTSGT]

Sikaflex Concrete is a grayish product and would probably work good.

 

[NitroPress]

I've used that for single holes and smaller repairs. I guess I wasn't clear: what concrete/mortar/patch product, hardening, would be easiest for this? Just regular cement, mixed a little on the thin side? Or is there a better product?

 

[NUTTSGT]

Well, it that case probably some Quikrete, maybe a little thin. Maybe find a cheap funnel about the right size and a wood dowel to make the process faster and easier.

 

[My Old Tools]

how about grout or mortar.

 

[The Cobbler]

I would use sand mix concrete and be done with it.

 

[Jess]

I use Rockite grout for this type of stuff. Just mix and pour into place. Once it sets, you can grind off any excess or mask the floor around it and wipe off any excess before it sets.

 

[NitroPress]

With the lifts out, it turns out to be even simpler. I just drove the anchor bolts down into the slab, which is almost good enough but might produce up-leaks during long winters. So I'll punch each anchor down another inch and use Sikaflex to fill and seal the hole.

Easy, just a little tedious to repeat 32 times while buffing off the marks left by the lift feet.

 

[DC73]

Hydraulic cement. Available at the big box stores.

You can also buy a similar product called structural cement repairs like this: http://www.homedepot.com/p/Quikrete...25/207102852?keyword=structural+cement+repair

Similar to hydraulic cement but makes for a stronger repair.

DC