Concrete Crazing

[bmxdad]

New pad, poured on 9/30 and this is showing up. Cannot feel with a fingernail. Washing it down makes it harder to see, but when dry show as below. Did some searching and it appears to be crazing, where the top surface drys to fast. Crazing appears to be only .004 thick and about twice as deep. Not to much of an effect on the structural nature of the pad, just a visual eyesore.

Has anyone dwelt with this before, and would epoxy sealer make it go away? Not unhappy with the pad, but not to thrilled either.

View media item 44174

 

[404]

Too much steel trowel on the pad.. No idea on making it go away. Paint?

 

[bmxdad]

Picture shows a 6" x 4" view, so they are not that big. Just talked to the concrete guy and he says they are heat cracks, and they are not really cracks, just surface marks. They could go away. Caused by the surface drying to fast. After I clean, with muriatic acid, they may go away. We'll see next week.

 

[James-W]

If the problem doesn't go away after you clean the floor with muriatic acid, maybe you could get a sealer with some sort of tint in it that would camouflage the way it looks.

 

[shaun oriold1]

you can read about it here - http://www.cement.org/docs/default-...defects-causes-prevention-repair.pdf?sfvrsn=4

I see it regularly on floors. No big deal. As mentioned a tinted coating will conceal it.

 

[thegarageguy]

diamond grind it and have a pro apply a good epoxy/polyurethane system

 

[bmxdad]

diamond grind it and have a pro apply a good epoxy/polyurethane system

That ain't happening It's a working garage/shop/Home CF box ... nothing fancy. It would be nice if the floor had a lttle shine, like below. Really like the look.

Legacy Floor Sealer

Most I'm doing is washing it, etching it, sealing it and then watching it. Hopefully it'll stay just a visual issue.

If it escalates beyond that ... we'll see.

 

[thegarageguy]

clear sealer (acrylic, epoxy or polyurethane) will not hide your crazing...if anything, it will accentuate them.

 

[shaun oriold1]

clear sealer (acrylic, epoxy or polyurethane) will not hide your crazing...if anything, it will accentuate them.

If you cant hide it, then draw attention to it! Like a filled crack in a polished floor. I just gives it character,

 

[bmxdad]

Agree ...

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[Turning Point Innovations]

Definitely an interesting character. You could enhance it further with a waterbase (non-acrylic) stain before sealing for a more defined look. Or if you don't want the maintenance of a film-forming sealer just use a lithium densifier. We have the same phenomenon in our showroom under the "stain chart" and that's after grinding to remove contaminants all the way to aggregate in some places. Funny when contractor's customers ask if they can produce the same effect in their stained floor.

 

[bmxdad]

Any images of the crazing?