anyone had their sunken concrete poly jacked

[mmavet]

The front section of my drive settled about an inch and a half over the years, so I tried to find a mud jacker to raise it back up so it's easier to get the vehicles into the garage and then get the water going the right direction again. I'm having trouble finding anyone to do the job.
The company I did find is about 60 miles west, and they do a poly jacking. I'm not sure but wouldn't poly foam become saturated and just decompose under the concrete? Just curious if anyone has had this poly raising done before or have an opinion one way or the other?
It's only a small area, about 8' out from the garage doors, and 34' across the width.
Before I commit to something I know very little about I'm trying to get some opinions. The other alternative is tear it out and pour it back so it works as it did before the backfill settled.

 

[gjz30075]

I had something similar done to a front stoop and adjoining sidewalk. I'm
not sure if it was a poly jacked job but they drilled several holes in the
sidewalk and under the stoop. With a pumping machine, the operator
forces some slurry slop into the holes. Done slowly and evenly, some
hours later, the slurry slop raised the stoop and sidewalk about 5 inches.

The slurry slop looks like concrete and it dries very slowly. Can't tell you
about longevity because I moved from that house shortly thereafter.

MUCH cheaper than tearing out the old and pouring new concrete.

 

[txvwnut]

That poly jack expanding foam hardens like a hockey puck. We've done several roadways at work and the concrete pads in front of the shop. Most of this has been done for 3 years and everything is still sitting good.

 

[matt01073]

We had some severe settling in a rear corner of a building about 900 square feet of floor and corner of the cement block building settled to the point we were having roof issues . we had a company from connecticut come they used a process called mud jacking the guy went around our building tapping on the floor drilled a bunch of holes about 1 1/4 ich as i remember had a trailer mounted machine with a hose the hose had a wedge shaped tip he tapped it into the hole walked around and told us where the floor might crack , he then pumped in the stuff he was using as it started to come out of some of the holes he jambed some rags in those holes within minutes the floor raised in that whole section of building about 3 inched at the rear prt that was the worst the floor cracked a bit right about where he said it would and the floor was just about perfectly level when he finished whole process was a couple hours and as i recall was 1500 or 1800 given that its an 8 inch reinforced floor and there is a bunch of equipment that would need to be removed to break up and replace the section of floor it seemed to be the best option . its been about 10 years and has stayed fine

 

[ThomasP]

My buddy had his driveway done last year. It has already sank again!

 

[Capt Chrysler]

We had a 160 (divided in 20' sections)' x 23' mud jacked. 2 1/2 cement trucks later. The floor was up. Seems all the sand under the building had settled. WW2 Navel Ammo Plant building.

Capt. Chrysler

 

[Dick in Wisconsin]

We got a bid from a company in Milwaukee that does "concrete raising". I used the term "mud jacking" with the estimator and he said they don't do mud jacking anymore. They use this slurry (can't remember the technical name) today and I recall he used the term "hockey puck" to describe what it turns into. He said that "mud" will become wet, possibly move around, and allow the concrete to settle. He stressed that their men take their time in allowing the slurry to flow thoroughly under the concrete so it doesn't have any voids. I asked him how much slurry it would take, he said depends on how big the voids are under the concrete.

What I thought was interesting was that he didn't want to include raising one piece of concrete near the back door to the garage. Said because of its location and other factors I don't remember, it was too likely to crack and that it hadn't sunk very much. Just leave it he said.

Will probably have it done in the spring or early summer.

 

[finn]

Had my patio and several sections of walk done.

Everything was still level 5 years later when I sold the house.

I don't know what they used. Only took a couple of hours while I was at work and was inexpensive compared to a tear up and repour.

 

[CNGsaves]

OP . . . . you may have very different vendors available depending on WHERE in world you are ??

UPDATE GJ Profile with a Location.

 

[industrialguttersma]

The front section of my drive settled about an inch and a half over the years, so I tried to find a mud jacker to raise it back up so it's easier to get the vehicles into the garage and then get the water going the right direction again. I'm having trouble finding anyone to do the job.
The company I did find is about 60 miles west, and they do a poly jacking. I'm not sure but wouldn't poly foam become saturated and just decompose under the concrete? Just curious if anyone has had this poly raising done before or have an opinion one way or the other?
It's only a small area, about 8' out from the garage doors, and 34' across the width.
Before I commit to something I know very little about I'm trying to get some opinions. The other alternative is tear it out and pour it back so it works as it did before the backfill settled.

Poly jacking or polyurethane is effective and it will last longer that you expect. This is because no further weight burden on weakened foundation or soil because it is light and it uses fewer holes than the usual mud-jacking. Very convenient and efficient. No need to worry.

Regards,
George