concrete precast element的意思|示意

In recent years the reinforced concrete precast element linings are adopted more and more for the soft surrounding rock tunnels. But a perfect assembling method for lining is not performed yet.

软弱围岩隧洞在设计上采用钢筋混凝土装配式预制构件衬砌的方式近年来越来越多，但在施工上还一直没有形成一套较完善的衬砌安装方法。

The practice became aware of Tradical Hemcrete at the concept stage, while researching alternatives to early suggestions of either in situ or precast concrete as the primary walling element.

在概念设计阶段，该事务所在对用现浇或预制混凝土作为主要墙体材料这个早期建议进行研究替代方案时，注意到了Tradical Hemcrete（新型材料名称）。