Civil Engineering - Concrete Technology - Discussion

29. 

For compacting plain concrete road surface of thickness less than 20 cm, we use

[A]. internal vibrator
[B]. screed vibrator
[C]. form vibrator
[D]. none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Amartanshu said: (Dec 27, 2014)  
Why tell me detail?

Abhishek said: (Jan 1, 2015)  
What is the criteria to choose the type of vibrator?

Kushal said: (Jan 7, 2015)  
Form work Vibrators: They are used for concreting columns, thin walls or in the casting of precast units.

Needle Vibrator: Commonly used vibrators, smaller needle for small level concreting and bigger needle for mass concreting is used.

Screed vibrators: Used for compacting and leveling of thin members, such as floor slabs, roof slabs and road surface.

Yogi said: (Sep 20, 2016)  
What is the criteria to choose the type of vibrator?

Suman Bharti said: (May 9, 2017)  
Thanks for give details about vibratos.

Vijay said: (Aug 29, 2018)  
Thank you @Kushal.

Er.S.Kesavan said: (Sep 9, 2018)  
Screed vibrators mostly used in road pavement works.

Adarsh said: (Oct 12, 2018)  
What are the Applications of the Internal vibrator?

Vyankatesh said: (Nov 1, 2018)  
Internal vibrator/needle vibrator is used for intenal vibration purpose.

Form vibrator is used over formwork spacing should be more than 90cm.

Screed vibrator is used plain concrete or ready mix concrete for flooring or road surface.

Rishabh Madaan said: (Sep 5, 2019)  
<20 cm then use screed vibrator.
>60 cm then use needle vibrator.

These are for road surface only.

Anomiee said: (Sep 14, 2019)  
Thanks @Kaushal & @Vyankatesh.

Naseeb Kakkar said: (Nov 16, 2021)  
Screed vibrator is specially designed for pavements.

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