How would you fix cracks in a concrete path?

[Mentalguy2k8]

Apologies if this is a stupid question.

This path is made out of concrete and stones mixed together (don't know what the term is - hardcore?) but has surface cracks in a couple of places and weeds are growing out of the cracks. Biggest crack is probably 1/4 inch wide at its widest point. I'm also going to be pressure-washing it tomorrow and could well dislodge a few of the stones. As far as I'm aware, there's no root activity underneath, the cracks have been there for years and not changed.

Can you just fill it, like a wall with polyfilla? And if so, what would you use and in what quantities?

[The Natural Philosopher]

yes. try 2:1 sand cement.

If that breaks up, use epoxy mortar.

[Mentalguy2k8]

Excellent, thank you very much.

[meow2222]

sand & cement will most likely break up & come out. Epoxy mortar'sd best, but not cheap Bitumen's cheap but soft, and after bitumen nothing else will stick to the crete So use epoxy mortar if you can.

NT

[Mentalguy2k8]

Thanks, does the epoxy mortar go straight on from the tub or do I have to mix it with something else first?

[stuart noble]

What you could try (mainly because it comes in small packs) is floor tile cement. It's the right colour and will likely penetrate the fine cracks well. Very hard wearing too IME

[The Natural Philosopher]

That is a good thought. waterproof fast setting will do .

[meow2222]

Always use it straight

NT

[Tim Watts]

On Wednesday 22 May 2013 18:52 Mentalguy2k8 wrote in uk.d-i-y:

Idealy, cut the edges clean and neat with an angle grinder.

Then:

1) Fill with mortar - will probably crack again byut be good for possibly some years.

2) Fill with mastic or rubber strip[1] and accept the fact that it is moving and will probably move more

[1] like a building expansion joint - not sure what they use.

[stuart noble]

If you happen to have some SBR lying about, add that to the mortar