What is the required frequency of vibration for the machine?

The machine must produce 12000 ± 400 vibrations per minute (Clause 4.1).

What is the standard cube size this machine is designed for?

It is designed for 70.6 mm cubes (Clause 5.1).

What is the specified total mass for the moving parts of the vibrator?

The total mass of the eccentric and other moving parts must be 2.2 ± 0.2 kg (Clause 4.1).

What standard should be followed for the test procedure using this machine?

IS 4031 (Part 6) - Method of testing hydraulic cement - Determination of compressive strength of hydraulic cement.

IS 10080

: 1982

Specification for vibration machine for standard cement mortar cubes

CurrentFrequently UsedSpecificationMaterials Science · Cement, Concrete, Aggregates and RCC

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This standard specifies the requirements for the design, construction, and performance of a vibration machine. This machine is used to compact standard 70.6 mm cement mortar cubes for determining their compressive strength as per IS 4031.

Specification for vibration machine for standard cement mortar cubes

Quick Reference Values

Frequency of vibration12000 ± 400 vibrations/minute

Revolutions of eccentric shaft12000 ± 400 rpm

Mass of moving parts (vibrator)2.2 ± 0.2 kg

Internal dimensions of cube mould70.6 mm

Minimum hardness of mould faceplatesHV 200

Diameter of poking rod12.5 ± 0.1 mm

Practical Notes

Ensure the machine is mounted on a rigid, level concrete foundation to prevent loss of vibration and ensure consistent compaction.

The frequency of vibration should be periodically verified using a calibrated tachometer, as it is a critical parameter for achieving standard compaction.

The gap between the hopper and the top of the mould must be properly maintained to avoid mortar leakage during vibration.