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Civil Engineering

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Mixing, Placing and Curing Concrete

Concrete Compaction with Vibrators

Description

Concrete compaction with vibrators helps newly poured concrete settle inside formwork and around reinforcement bars. The goal is to remove trapped air pockets and create a dense concrete mass. Mechanical vibration is a key part of that process.

One common method uses an internal vibrator, also ca...

Transcript

机械振捣器用于振实新浇筑的混凝土,使其在模板内及钢筋周围密实,排出夹带的空气,形成致密的混凝土整体。

通常,将内部振捣器(如插入式振捣器)迅速插入新浇筑混凝土的整个厚度,并部分插入下层处于塑性状态的混凝土中。 

根据混凝土的稠度,每隔2到3英尺在混凝土表面进行振动,持续时间为5秒至2分钟。

逐渐抽出钢钎,以确保其在混凝土中所占据的空间能够自然闭合。 

与直接作用于混凝土内部的振动器不同,外部振动器通过弹性支撑牢固地安装在模板上,可同时振动模板和混凝土。

它适用于预制或较薄的现浇截面,在混凝土浇筑过程中可能需要进行位置调整。

或者,可通过将模板夹紧在振动器上,使用振动台为预制混凝土构件提供均匀的振动。 <...

Tags

Concrete VibrationInternal VibratorExternal VibratorPoker VibratorVibrating TableFormwork VibrationConcrete CompactionAir Pocket EliminationPrecast ConcreteVibration Duration