Bascially what you are saying is it wouldnt matter if I undercut it and repaired with cement mixture or if I caulked in a poly sealant material. Correct?
Correct. That will only prevent water from getting into the crack for a while. Eventually the pieces will shift further. How soon would only be a guess. It could be 1 month or 3 years. That repair material will not magically add shear strength to the concrete.
I know someone mentioned using the cutting wheel to me in another thread and how to keep the thing wet. How critical is that? Could the wheel be run dry?
No. The blade will wear down too fast and you are making the dust problem far worse (it is easier dealing with the mud puddles then widespread concrete dust).
When I rent a concrete saw here they measure the blade diameter and fees are based on how much the blade is worn down (a big incentive to keep the blade cooled with water). -- Got some spare cpu cycles ? Join Team Helix or Team Starfire!
reply to leibold Might be worth it to pick up an angle grinder. You can get a diamond blade for around $20 at Lowes or Menards. They cut like butter compared to the masonry wheels. You can run them without water.
I know there are grinder wheels that are meant for dry use but I just can't see using them for any long duration. They'd have to wear faster than a wet wheel.
Once you have all the concrete filled... Have you thought about decorative concrete coatings like the attached picture (that I borrowed from Google search images).
Even a garage epoxy style coating will cover up the repairs.
reply to robbin Grabbed a grinder that was on sale at Harbor Freight and a wheel at home d. Last night I did some research on materials and I found Quickrete has a resurfacing product with polymer in it that can be used for repair and resurface. Grabbed a bag of it at lowes.
My plan is to undercut the crack, and then rinse it out. Mix up the concrete repair as per label for a mortar mix and fill the crack then top it and brush the finish to help blend it.
I know it's not the be all end all fix as some day I'll have to replace the slab. -- "Above all, I would teach him to tell the truth. Truth-telling, I have found, is the key to responsible citizenship. The thousands of criminals I have seen in 40 years of law enforcement have had one thing in common: Every single one was a liar." J.E.H.
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