Hope someone can give me a solution to this problem
I formed up a 50sqm slab for our patio, did all the levels right, compacted gravel then sand, chaired up the mesh and so on and so forth.
The day of the concrete truck arrived, it was supposed to be at 12pm. I had a concretor who was going to direct the screeding and finishing. The truck didn't arrive for 2and a half hours and the concretor had to go to another job. I was left to do the job which wasn't a big issue. The cement came off the truck, and not being a concretor, it looked alright to me, and the truck driver seemed happy. Got all the cement in the form in about 15 minutes and one of my mates and I started screeding. About 20 minutes later, I realised the concrete was already going off. I put as much water on it as I thought was safe and kept going. We nearly killed ourselves getting it as level as possible then we got the wooden trowels out started trying to bring the slurry to the surface, but to no avail. This was around an hour and 15 mintues after the truck left!
The concretor returned and he went off his tree about how dry the crete was. We spent the next 2 hours trying to salvage some finish in the slab. What I am left with isn't pretty to say the least.
Any suggestions on how I can rescue the suface finish? I also think I am going to have problems with concrete dust with the amount of water we used to bring up any slurry...
Thanks in advance..