Drill a crack?

[robertwhite]

I have a small (basically hairline) crack that came from the ramp not being separated from the floor with a control joint by the concrete guy. Once I saw it, I cut joints in the entire slab.

When I washed the floor the other day, I noticed that the tail of the hairline goes about 4 inches past where I cut the joint. The ONLY way I saw it was because the water showed it, thats how fine of a crack it is at this point.

So, can I take say a 1/8" drill bit and drill a small hole at the very end of where the water shows the crack to be? I am thinking that it would act as a control joint of sorts for that crack, no?

 

[LegacyIndustrial]

That crack is likely to be all the way through (top to bottom). Better bet is to fill with a slab bonding sealant.

 

[robertwhite]

That crack is likely to be all the way through (top to bottom). Better bet is to fill with a slab bonding sealant.

There is absolutely no way to fill the crack unless I physically made a cut in the floor. As I said, the ONLY way I even knew it was there is because water creeped into it, thus highlighting it. I can't even feel it with my fingernail.

Even the actual hairline from which this sprouted is BARELY visible for at least 2 ft before it (4ft total length), and the starting point is not open at all, it is just a tiny bit more than a hairline.

I understand your logic, but making a cut and then filling it would be like putting the cart before the horse.

 

[Cabby89]

Leave it alone. It doesnt sound like a terrible problem and one that is not seen.

If it gets worse taking Legacy's advice is best. You will just have to get a crack chaser to make a V cut thru it.

 

[robertwhite]

You will just have to get a crack chaser to make a V cut thru it.

Crack chaser? Never heard of such a thing. Link?

And no, it is not currently a problem, but it is in the section where my lift will go. That is why I would like to ensure that it doesn't get worse.

 

[ConCretin]

Robert, a crack chaser is just a diamond blade for a grinder that cuts a 'V' groove at the surface of a crack to create a void for sealant.

I agree with Cabbby89, I'd probably just leave it alone. It isn't structural and the repair will look worse than the crack does.

I get the logic of drilling a hole to stop the crack but my sense is that it wouldn't be worth the effort.

 

[robertwhite]

Robert, a crack chaser is just a diamond blade for a grinder that cuts a 'V' groove at the surface of a crack to create a void for sealant.

Oh, OK. I got's me one of them thar' crak chasers. (4" and a 7 1/4" that I cut my control joints with it)

I agree with Cabbby89, I'd probably just leave it alone. It isn't structural and the repair will look worse than the crack does.

I get the logic of drilling a hole to stop the crack but my sense is that it wouldn't be worth the effort.

Sounds good. I guess I will just keep an eye on it.

Thanks guys.

 

[Frank The Plumber]

Owww.

 

[porphyre]

They also have specifically designed crack chaser blades. But they're pretty pricy for a small project...

http://www.diamondbladedealer.com/tuckpointbladescrackchaserblades-c-83_90.html