Home Forums Hunting & Shooting Hunter's Campfire concrete joint

I've got a concrete expansion joint on my new patio like the one picture and one where two of them cross. I would like to grind or cut out the portion that does not go al the way to the edge to allow it to dry faster with runoff.

1. What would be the best method?
2. is it going to look odd like polished or whatever if I do that compared to the rest of it?

Get a concrete saw . Don’t see the point though

Take a screwdriver and knock it out and go back inside

Wapner is fixing to come on

A course sanding disc on an electric drill will work, or a conc. saw blade on a skill saw, either should not change the integrity of the slab.
The sanding disc would let you shape and contour the cut better.

Fill the joint with Sikaflex.

Diamond blade in a 4” Angle grinder. Harbor freight for $20 if you don’t have one.

Use a cutoff disc on an angle grinder.

It is never going to match, so if that looks odd to you best to leave it alone.

True. My ADD kicking in when water is splashed out of the hot tub and the water just sits there instead of running off. Not enough water for gravity.more of less just bothers me that the they didnt make it look good to begin with.

That control joint will soon crack, as it is supposed to. Once that happens water will drain out the joint in the crack. You will see the crack extend through the bit that is left unjointed. Those are not my preferred method of jointing but they are more aesthetic than cut joints.

I’d fill it with gray color caulk made for that purpose . Filling a joint like that . I think it’s elastomeric ?

Grinder with a 4” wheel as noted b-4, if you insist on doing it. Quick and easy

Grinding blade for a skilsaw

concrete joint? Very hard to light I bets.

Take a claw hammer and smack it real good right on the edge, get plenty of runoff.

long lasting

Another vote for a big standard screwdriver and strategically placed hammer taps.

Like Michelangelo.

It would look better to just caulk the joint as suggested. Then the water never runs into it.

They make a V blade for chasing that type of joint. If I screw up when finishing and don't get those joined all the way to the end they fill up and freeze in the winter. I always go back with a V blade if I have to. As some have mentioned , a regular diamond blade on a grinder will work , you can feather out both sides with it if you are careful.

Drill a few holes down in the bottom of the expansion joint.

I'm glad you noted that it's a control (contraction) joint and not an expansion joint. At least they OP called it concrete and not cement. I cringe when fellow engineers call it a cement sidewalk.