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Imagine a structure which is highly reinforced and there is no enough space for using the typical vibrators? How can we cast this? Suggest.

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Question ajoutée par SREEJITH KUNNATHULLY , Sr. Landscape Engineer , Arcadis
Date de publication: 2016/07/18
SIMON JOSEPH XAVIER RAJ
par SIMON JOSEPH XAVIER RAJ , Project Engineer , ABB Global Industries and Services Pvt. Limited

By increasing the slump value above 120mm the concrete workability will turns to free flow stage and hence no need of vibrators. To increase slump value admixtures to be used instead of water.

Imran Ahmed
par Imran Ahmed , Manager-Planning & Delay Analyst , Nesma United Industries (NUI) Saudi Arabia

1) Use Immersion or Needle Vibrators with smaller diameter of rod.

2) External or Shutter Viberation. Forkwork should be strong enough for this.

3) Use of Admixture. To reduce air entraped between aggreagtes and to incease workabiltiy of concrete to avoid any defects in concrete. e.g. honey comb etc.

It can be redesign for mix of concrete by using small size of aggregate to get more workability and passing easily in a space of reinforcement.

SREEJITH KUNNATHULLY
par SREEJITH KUNNATHULLY , Sr. Landscape Engineer , Arcadis

Self-compacting concrete (SCC) is a flowing concrete mixture that is able to consolidate under its own weight. The highly fluid nature of SCC makes it suitable for placing in difficult conditions and in sections with congested reinforcement. Use of SCC can also help minimize hearing-related damages on the worksite that are induced by vibration of concrete. Another advantage of SCC is that the time required to place large sections is considerably reduced.

 

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