Concrete patio....tripping hazard

First, I am 83 and a loser handyman..... also inept at attaching a photo. Our 1993 concrete patio around the pool is pretty much OK...except for two sections with a stress joint. Red clay soil. Both have a one inch uneven settling dip and are 4+ inches deep. A tripping hazard. I tried pushing rope down deep and using some kind of caulk or filler with the thought of beveling the result. It rained and the caulk never did harden up.

Handyman was here couple of days ago with a 120v grinder and disk/wheel. After 20 min.....almost nothing was removed to try for a smooth bevel. I still like my idea of pushing something into the gap.....using the CORRECT filler....and beveling the result.

Can you help out with your ideas, please

Thanks

 

If you want it fixed I would look for people in your area that do mud or foam jacking. With mud jacking they drill some holes in the slab then inject grout under pressure. This lifts the slap and fills the void underneath. With foam jacking they usually mechanically lift the slab then inject high density foam underneath to fill the void and hold the slab up.

1" is quite a bit to try grinding. Even wit grinding there is such a ramp/slope that it is still a tripping hazard. I don't know what disc your guy tried but at the minimum I'd use a carborundum wheel in the largest grinder I've got. A diamond wheel can also be used and should be cooled with water.

Then there is the obvious replacement option. Break up and remove the sunken or raised slabs a pour new.

 

Hi P.D. and thanks, but.....I don't like your solutions. This is, after all....DoItYourself. Why hire someone. I still like my rope/backer rod and filler idea. What I need is exactly the right filler, brand name and item #.
TIA

 

You can diy foam jacking but the results may not be perfect.

 

I've tried products specifically for overlaying. They can work ok if the underlying concrete is solid and not cracking and you thoroughly clean the surface. Still, it's a not a sure success process. Whenever I've tried it over marginal concrete it can crack and fail relatively quickly. If you try it make sure you pay attention to the thickness that each product can handle. Some are better for thin applications and fail when applied thicker while other products are great when thick but fail when thin.

 

I am going to buy Sikacryl ready mix concrete patch, 1 qt, $9. Will post results. What are my chances of a successful DO IT YOUR SELF....repair ?

 

90% of the job is preparing the surface.

 

Job done a week ago. Sika used and leveled/beveled. Painted over and seems OK. Time will tell.