I'm trying to sort out a builder laying outdoor concrete for a plinth in cold weather, around 0-2oC. Is there an additive e.g. PVA SBR 503, that can be added to allow the concrete to set in 2oC? Thanks
Should I put a layer of DPC underneath the concrete plinth to stop damp from rising? So the layers would be (bottom upward): earth, DPC, stones, concrete plinth, oil tank