What is the primary application of screed board vibrators?

They are primarily used for levelling and compacting shallow, wide concrete surfaces like floors, pavements, and roof slabs.

What is the limitation on concrete depth for a screed vibrator?

It is generally effective for compacting concrete up to a depth of about 150 mm to 200 mm.

What is the required minimum frequency of vibration?

Screed board vibrators typically operate at a minimum frequency of 3000 vibrations per minute to ensure proper consolidation.

IS 4651

: 1968

Screed Board Vibrators for Concrete - Specification

CurrentSpecializedSpecificationGeneral · Scaffolding, Formwork and Construction Equipment

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This standard prescribes the specifications, constructional details, and performance requirements for screed board vibrators used for the compaction and levelling of shallow concrete layers such as road pavements, floor slabs, and roof slabs.

Specifies requirements for screed board vibrators used for compacting concrete slabs and pavements.

Quick Reference Values

minimum operating frequency3000 vibrations per minute

effective compaction depth limit150 mm

Practical Notes

Screed board vibrators are generally effective only for shallow concrete layers (typically up to 150 mm depth). For deeper sections, internal immersion vibrators must be used in conjunction.

Ensure uniform movement of the screed board across the concrete surface to prevent uneven compaction, segregation, and surface irregularities.

The vibrating unit must be securely bolted to the screed board to prevent dampening of the vibration energy.