ما الفرق بين الPre Tension Concrete و ال Post Tension Concrete و ال Pre Cast Concrete؟

Pre tensioned concrte: Concrete in which reinforcing steel bars are stretched and anchored to compress it and thus increase its resistance to stress.

Post tensioned concrte: It is a technique for reinforcing concrete. Post-tensioning tendons, which are prestressing steel cables inside plastic ducts or sleeves, are positioned in the forms before the concrete is placed.

Pre cast concrete : To cast (a concrete block or slab, etc.) in a place other than where it is to be installed in a structure.