also: なまコン
noun
ready-mixed concrete; liquid concrete; wet concrete
Refers to concrete that has not yet set, typically delivered by a mixer truck. The term is widely used in construction.
工事現場に生コンクリートが到着した。
The ready-mixed concrete arrived at the construction site.
生コンを流し込む前に型枠
Please check the formwork before pouring the wet concrete.