Sand crack filler with diamond grinder?

[streetdaddy]

Planning my upcoming epoxy job.

Can i fill contraction joints with epoxy filler and then use the diamond grinder to

sand it down? Will that make it blend in? Or do i need to add another step by grinding that down separately ?

Also, to pre fil with sand do i just sweep it in and then fill with filler?

 

[SunsetsAndFriends]

streetdaddy - I'm starting my floor coating project now. Not sure if I'm going with epoxy or polyurea, but that's another issue. For cracks, I ordered Xtreme Set 100 from LegacyIndustrial. Hopefully it arrives this week, though I just ordered it yesterday. Here's the link: http://www.legacyindustrial.net/pro...atings/xtreme-set-100-crack-joint-filler.html .

Here's a link to a video showing how this stuff works:

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[Armorpoxy]

Hi
You can fill the joints with either our Crack Repair Epoxy Putty, our Epoxy Mortar or use the 100% solids epoxy with sand. Make sure to use backer rod to support it so it doesnt sag. All of these products can be grinded and sanded since they harden.

 

[streetdaddy]

My contraction cuts were saw cut. They are about an inch deep. So in my case I would just send them and put the epoxy right over the top?

 

[SunsetsAndFriends]

I believe that when using a 100% solids epoxy, the sand is mixed into the epoxy and then troweled into the joints. Or there are epoxy fillers that get mixed and then troweled. As I mentioned earlier, I purchased Extreme Set 100 from Legacy Industrial. It's a polyurea, that gets mixed and then applied over the sand filled joints. Then more sand is sprinkled on top.

 

[streetdaddy]

how did the crack sealer turn out? Any tips?

 

[Shea]

Planning my upcoming epoxy job.

Can i fill contraction joints with epoxy filler and then use the diamond grinder to

sand it down? Will that make it blend in? Or do i need to add another step by grinding that down separately ?

Also, to pre fil with sand do i just sweep it in and then fill with filler?

A 4" or 7" grinder works best to blend the fill/repair in with the surrounding concrete. A Diamabrush (if you were planning on using it) will not grind it down flush very well. An Edco machine will work fine on it as well.

 

[boobag]

won't the epoxy crack along those joints as the slabs move, if you fill them and epoxy over?

 

[LegacyIndustrial]

Looks like this... there is always the possibility. We use either a flexible (but hard ) epoxy gel or a polyurea mixed with sand. Polyurea is by nature very flexible but still hard.