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Concrete Mortar Mix vs. Brick Mortar Mix

This is working with a flat concrete slab, but imagine what it would be like on a vertical brick structure. Your Mortar Mix had better be perfect, especially if you’re dealing with an old building and don’t know what the mortar mix is to match what’s there. If it’s analyzed you know before you go.

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Here’s a cool tip or two on dealing with cracked cement slab.

“HOW TO FIX A CRACK IN CONCRETE

I’ve been busy fixin’ stuff!

There was this crack in the concrete walkway at Mom and Pop’s house that was driving me nuts, so I repaired it and thought I’d share all the super simple fix-it details with you. 

HOW TO FIX A CRACK IN CONCRETE

The crack had been there forever, but it only started driving me crazy recently. You see, it wasn’t all that noticeable until I finished installing the new stamped concrete tile driveway… 

DIY STAMPED CONCRETE TILE DRIVEWAY

 At which point the crack, in the walk way on the left, stuck out like a sore thumb. It was very rudely screaming at me: FIX ME!

And since I don’t like being yelled at, I did.

Here’s a close-up of the bugger… 

HOW TO FIX A CRACK IN CONCRETE

You can see how the cracked corner sits lower than the rest of the concrete slab. So my plan was to dig up the cracked end and place a layer of sand underneath it so that it sat level with the rest of the slab. But the darn thing wasn’t having any part of that. As I dug out the soil on the end, I found that the piece was not only six inches thick, but it was still completely attached to the post on the right.

So I put my thinking cap on and came up with plan B: fill the crack with mortar mix and then use the mix to level out the top. And, I’m happy to say that it turned out perfect.

I used my chisel to create a small under-cut below the lip of each side of the crack.

HOW TO FIX A CRACK IN CONCRETE

Basically, your crack should look more like the image on the left above. The difference is that in the years down the road, the undercut will help prevent slippage of the repair.

Next, make sure your surface is thoroughly clean of any oils, dust, or debris.”

via HOW TO FIX A CRACK IN CONCRETE with Rapid Set® Mortar Mix – Do-It-Yourself Fun Ideas

 

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Foundation Corner Crack is Nothing Compared with Brick Mortar that Doesn’t Hold

This might be common, but the bigger issue is how solid is the brick mortar between those bricks? Is it the right mortar mix? And will it hold up over time?

The corners of her concrete foundation are cracking off and she wants to know how to repair them. Here’s her testimony:

“The corners of my foundation are slowly falling off. I know I have foundation problems, but I want to put this big chunk back on instead of rebuilding it.

Is there some type of adhesive or bonding agent I can use for this large chunk?”

This chunk of concrete came off because the brick and mortar and poured concrete expand and contract at different rates. Photo credit: Robyn

This chunk of concrete came off because the brick and mortar and poured concrete expand and contract at different rates. Photo credit: Robyn

You bet there’s a compound you can use.

What would you say if I told you there was a miracle concrete epoxy that fit into a standard caulk gun?

Would you be amazed if I told you this repair could be done in about ten minutes by you?

When you go to use it, I want you to cut a piece of an old pliable CD or DVD case and put it between the top of the chunk and the brick mortar. Do NOT put any epoxy on the top of the chunk!

The brick and mortar are moving at different rates than the concrete and I need you to provide a surface where they can slide easily and not get interlocked. This is why the concrete cracked and broke off.

You need to figure out how to hold the chunk in position without moving for an hour or two as the epoxy hardens. This is mission critical to your success.

via Foundation Corner Crack Repair

In addition to the foundation check out the brick mortar in your building to see if it is crumbling, even a little bit. This shows you might have the wrong mortar mix. We test for that.