The correct technical term for this is "cast-in-place", as opposed to precast, when the concrete is poured off-site.

http://www.advanceconcreteproducts.com/1/acp/precast_vs_cast...

Precast Concrete Saves You Time

Pre-cast concrete eliminates many of the time-consuming tasks involved with cast-in-place. With pre-cast concrete, you and your crew won’t have to haul, set or remove forms. Nor will you have to wait for a concrete truck to arrive or concrete to cure. And never will you have to worry about your concrete setting-up in the truck or performing on-site strength tests. All you have to do is dig a hole. We do the rest. What does this add up to for you? An average of 2 days shaved off the duration of your project when you use pre-cast concrete.
http://www.advanceconcreteproducts.com/1/acp/why_precast.asp