Once the moisture is out of the concrete and it is cured it should not shrink - it is however in a state of stress so make sure control joints are added to any large concrete areas that are poured and placed.

Wet concrete is caustic- it will burn your skin. Concrete DUST is not good to inhale- it may contain silica. Solid, cured concrete is about as hazardous as a rock.

When referring to concrete work (using a structural suspeneded slab as an example)

Shoring - support structure for formwork before concrete is poured and while it is curing. The formwork is the plywood and the shoring is the posts.

Reshoirng - support structure for the cured or partially cured concrete - installed after the formwork and shoring have been removed. Usually used as additional support for the partial cured concrete (which has reduced strength) to allow construction work to continue on the slab until it has fully cured.

• Yes, the vacuum dewatered concrete requires curing in order to gain its strength.
• The concrete is cured for 28 days.

Green concrete could mean two different things. It could mean that the concrete isn't cured yet, or it could mean that it is supposed to be environmentally friendly.