Post-tensioning is the application

Post-tensioning is the application of a compressive force to the concrete at some point in time, after casting. When the concrete has gained strength a state of prestress is induced by tensioning steel tendons passed through ducts cast into the concrete, and locking the stressed tendons with mechanical anchors. The tendons are then normally grouted in place.

Results (Chinese) 1:

后张法预应力混凝土在一些点在时间后，铸造中的应用的压缩力。当混凝土已获得了力量的预应力状态被诱导通过管道铸造成混凝土，并锁定与机械锚筋的预应力钢肌腱。然后，肌腱在地方通常后压浆。

Results (Chinese) 2:

后张是在某个时间点的压缩力施加到混凝土中的应用，铸造后。当混凝土已获得强度预应力的状态下通过张紧通过铸入混凝土导管通过钢筋，和锁定机械锚强调筋诱导。筋，然后通常到位灌浆。