Self compacting concrete

[lizzieuk1]

Does anyone know if there's any reason you can't  use self compacting concrete in an insulated raft? 

(Not talking about flow screed types)

[JohnMo]

Possibly, but you need to go to your structural engineer to ensure it is of a suitable structural strength.

[Mr Punter]

I can't see why not.  It may be a fair bit more expensive and although it is self compacting, it will not necessarily be level.  I would get a decent concrete contractor and use standard concrete.

[Russell griffiths]

Have you looked into the availability 

when I thought about it briefly it wasn’t available locally so that stopped that idea. 

[lizzieuk1]

1 hour ago, JohnMo said:

Possibly, but you need to go to your structural engineer to ensure it is of a suitable structural strength.

I have asked if we can use scc and they have said no but, not given a reason. AFAIK the scc is made to the required strength(in our case C25/30) but has added platiciser to improve flow, I don't think it affects strength but, I'm certainly no expert, just reading up on the Internet concrete sites for info and so far that's what I've understood.

[lizzieuk1]

44 minutes ago, Russell griffiths said:

Have you looked into the availability 

when I thought about it briefly it wasn’t available locally so that stopped that idea. 

Yes, we have a local company that can supply it and, its not much more than standard. A standard mix with crew comes in around £500 more, not much so we will use that if it is the best option.

[carlos21]

whats self compacting concrete?