What polyurethane sealant for concrete driveway cracks?

adaadat

I've seen, on some American sites, that its common there to seal cracks and expansion joints in concrete driveways, with sealant that you extrude with a sealant gun, but I can't find anything here that is labelled for this job.

Does anyone know which of the hundreds of sealants available here is suitable?

Cheers.

tony6403

Not sure what you are expecting to achieve.
I don't think that an invisible repair is possible using fillers.
Once the integrity of the concrete has gone (i.e. the cracking) filling will not in my opinion restore it.
If you nevertheless want to fill them suggest widen out the cracks and then use epoxy repair mortar.