The concrete for face slab is designed to have an age of 28 days, the strength grade of C25, the frost resistant grade of D100, and the impermeability grade of S12. The single layer steel bar is arranged in the middle part of face slab and in the plinth.

• 面板混凝土设计采用28d龄期,其强度等级为C25,抗渗等级S12,抗冻等级D100,单层钢筋布置在面板的中间;