结构（英-中）

Concrete should be thoroughly compacted during placing by vibration or other means and worked into corners of the formwork and round reinforcement, tendons, duct formers, embedded fixtures and the like to form a solid void-free mass having the required surface finish. Vibrators should be used in a manner that does not promote segregation, and vibration applied until the expulsion of air has practically ceased. Over-vibration should be avoided as this may cause the formation of a weak surface layer.

灌注过程中，应通过振动或其他方法来完全压实混凝土，使混凝土灌入模板、圆形钢筋、钢筋束、槽道、预埋固件和类似道具的各个角落，以形成结实、紧密、表面平整度达标的混合块。应妥善使用振动器，尽量减少混凝土分离，待排气几近结束时，停止振动。振动过度会导致表面层薄弱，故应避免。

When external vibration is used, the formwork design and vibrator disposition must ensure efficient compaction and avoid surface blemishes.

采用外部振动法时，应合理地设计模板和布置振动器，确保有效压实，防止形成表面缺陷。

Where permanent formwork is incorporated in the structure extra care is required, as full compaction of the concrete cannot be checked after the formwork is removed. The energy absorbed by the formwork should be taken into account when deciding on the method of vibration to be used.

由于移除永久模板后，无法检查出混凝土是否完全压实，所以当使用永久模板时，应特别小心。选用振动方法时，应考虑模板吸收的能量。