Firstly, thanks to those who offered advice on my recent queries regarding my new garage concrete base.
I now have a big problem and I'd be very grateful for advice.
A third of the slab has been laid, but it looks like I have a strip of about 2ft by 8ft at the far end of the slab (under which will be the end of the concrete sectional garage) which seems to have very low concrete to ballast ratio. So much so, that 24 hours after laying, I can break the surface with my thumb. I'm guessing that it's been mixed at about 6 to 1 ratio, opposed to the correct 3 to 1. A part of the slab that _does_ have the correct ratio, is rock hard.
How much of a problem might this be? Should I wait a further 24 hours and see if it firms up, or is it so obviously compromised that I should rip up the slab and start again.
I'd hate to build the garage and find that the poor concrete at the end starts falling away.
Anybody else here had a simialr predicament?
Advice, or even piss-taking, welcome.
Mal.