Gluing concrete to concrete, possible??

[Matchless]

In my village, over in the new estate (1930-50's) there are concrete roads with what are known as suction kerbs, roughly 6" square section yard long concrete kerbs that were dropped onto the still wet road surface when the roads were laid, they are getting knocked out of place by dust karts, home delivery trucks and builders lorries and are very expensive to replace as we have to cut through the reinforced concrete road surface and set in new deeper kerbs at a cost of £13,000 for every 100 metres, that is a lot for a smallish Parish Council to cover.
So the question is:- with modern adhesives would it be worth trying to re-attach kerb stones at least as an experiment? what adhesive would the panel suggest? The kerbs must be able to withstand a sideswipe from a passing bin lorry etc. I understand the need to clean the surfaces.

 

[gaz1]

first off what do you have and what damage are you getting

is it straight in line damage or is it the other damage

corner damage or entrance damage if corner or entrance damage look at concrete kerb bollards

do you have any pics as will help alot

 

[Cobbler]

I have no real idea, but have a word with one of the road crews, I understand they use some sort of epoxy cement to set manhole covers down with, they don’t seem to move.

 

[Dcal]

In my village, over in the new estate (1930-50's) there are concrete roads with what are known as suction kerbs, roughly 6" square section yard long concrete kerbs that were dropped onto the still wet road surface when the roads were laid, they are getting knocked out of place by dust karts, home delivery trucks and builders lorries and are very expensive to replace as we have to cut through the reinforced concrete road surface and set in new deeper kerbs at a cost of £13,000 for every 100 metres, that is a lot for a smallish Parish Council to cover.
So the question is:- with modern adhesives would it be worth trying to re-attach kerb stones at least as an experiment? what adhesive would the panel suggest? The kerbs must be able to withstand a sideswipe from a passing bin lorry etc. I understand the need to clean the surfaces.

If you can clean and better still, roughen the surface any of the epoxy adhesive will work. Do you need to stick them all down or just one here and there.
If you were able to install a few dowels you would greatly improve the resistance to sideswipes, but epoxy on its own would take a better grip than the original construction method.

 

[Smallfry]

Something like CT1 is pretty strong, but I imagine epoxy would be better.

There are epoxy floor repair products for factory and warehouse floors. Probably way stronger than a cement rich preparation.

I am imagining you crouched over the kerb mixing the little tubes of JB Weld !

 

[Welderpaul]

Dowel them in? Drill through the kerb into the road surface and grout in a couple of rebar dowels per kerb?

Glueing them on is up there with the Rawlplug welder's mate

 

[Dcal]

You could make a cementatous mortar work, however it would need to applied in thicker layers to work well and unless you are resetting them all, that might be a problem.
There are epoxy primers that can be used to improve the bond but I think the epoxy route would be better.

https://www.fosroc.com.au/sites/default/files/products_file_storage/Fosroc_Nitobond_EP_TDS.pdf

 

[brightspark]

as per post 6 its the only way plus bed them on with cement

 

[Kram]

Whats below them? Drill the bottom face of each stone and using chemical anchor like Rawl R Kem2 and studding and more chem anchor into the surface below. Combine that with epoxy or cement.

Epoxy is brittle and if trucks are hitting it, not suprised they are coming loose. Epoxy a kerb down as well as you like, I bet I can shift it with sledge hammer in a few swings..

 

[SierraV6]

Nufins Epikerb may be suitable:

High performance, Epoxy Repair Mortar - Nufins - USL Group

High Quality Epoxy repair mortar, formwork treatments, joint fillers, waterproofing solutions and other concreting products for the civil engineering and construction industries.

www.nufins.com

I’d speak to Nufins though as they have a vast product range.

For what it’s worth I’ve seen this stuff in action, and tear out occurred before the bond failed.

 

[oldbikedavey]

Worth remembering that the design strength of concrete in tension is zero....

 

[Matchless]

Nufins Epikerb may be suitable:

High performance, Epoxy Repair Mortar - Nufins - USL Group

High Quality Epoxy repair mortar, formwork treatments, joint fillers, waterproofing solutions and other concreting products for the civil engineering and construction industries.

www.nufins.com

I’d speak to Nufins though as they have a vast product range.

For what it’s worth I’ve seen this stuff in action, and tear out occurred before the bond failed.

I will contact them when I am back from holidays, I will also post up some pictures today.

 

[8ob]

Kerbs rely on what backs them up more than what holds them down, I would be looking at the make up of what's behind them.

Bob

 

[Morrisman]

I once dropped a grape sized blob of Upol car body filler into my concrete garage floor. It hardened, and more than a few times I caught the sole of my Croc as I walked over it and I kept thinking I’d give it a tap with a hammer some day, knock it off. Eventually I did get a round tuit and gave it a knock, then another, and then a much bigger one. It came loose, but it tore a chunk out of the concrete when it did so.
I’d assume there are proper epoxy adhesives out there, and with the area of a kerbstone it would take some budging once glued down.

 

[Matchless]

The first two pictures show typical loose kerbs, we have them at many locations around that side of the village, third picture shows the conventional method of repair, cutting the reinforced concrete road, cutting back the pavement tarmac, setting in a new deep kerb and than reinstating the road and footpath, fourth picture shows the repairs we have carried out around trees, last picture shows some of the bollards we have installed on corners to prevent lorries cutting the corner and buggering up the verge! Where there is a grass verge we could glue the old kerbs back down and then back them up with a concrete fillet.

 

[Pete.]

Those kerbs are getting pushed out by whatever is driving over them compacting the ground behind. Nothing is going to stop it happening except fixing the ground behind.

 

[SierraV6]

I will contact them when I am back from holidays, I will also post up some pictures today.

I would definitely give them a try.

Note what @Pete. said above as well re the verge being squished.

 

[gaz1]

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The first two pictures show typical loose kerbs, we have them at many locations around that side of the village, third picture shows the conventional method of repair, cutting the reinforced concrete road, cutting back the pavement tarmac, setting in a new deep kerb and than reinstating the road and footpath, fourth picture shows the repairs we have carried out around trees, last picture shows some of the bollards we have installed on corners to prevent lorries cutting the corner and buggering up the verge! Where there is a grass verge we could glue the old kerbs back down and then back them up with a concrete fillet.

1st 2 pics there garden kerbs ( edgings )

4th pic needs corner kick out posts that will also stop the deliverys going onto the kerb for deliverys
last pic kick out posts there in the wrong place badly fitted by the council there doing absouloutly nothing to protect the kerb