在構築的過程和角色是不是同時具有「永久性」和「臨時性」？沒有灌漿的鋼筋，又具有甚麼樣的時間特性？ 在這樣的論述之下，我們可以提出的議題是：假設鋼筋+混凝土是不可逆的，那XX+鋼筋是否可逆？鋼筋不再只是內骨骼，而成為外框架或模板（ 或其他角色？）， 那另一種材料會是甚麼？鋼筋有著不同係數的粗細，可因應用在不同的所需的力學，這件事如何彰顯關係?
Reinforced Concrete (RC) is a construction material that often being used. The tension resistance of steel bar and compression resistance of concrete create a strong bond between each other when expanding and hardening.
Other than the support and plywood that used during hardening process, is the steel bar considered as a temporary construction materials as well?
Are the [timeless] and [temporary] characteristics presented during the construction process? What if the steel bar is constructed without pouring concrete for strengthening?
Therefore, one of the hypothesis that is being considered is that, the bond of steel bar and concrete are irreversible; what if the bond between [x] and steel bar can be reversed? What if steel bar is not only an internal skeleton but an external skeleton or finishes (or any other role?) Thus, what will be the [x]? Steel bar are manufactured with different diameters, perhaps the strength required for different connections will be different, but how do this related to each other?