Specification for vibration machine for standard cement mortar cubes

IS 10080 - Scope & Key Specifications Summary

Scope (Clause 3.4)

• Mould size: 70.6 mm cube
• Construction: As per Fig. 2 and Table 2 dimensions with tolerances

Table 2: Mould Dimensions & Tolerances

Materials (Clause 2.1, Table 1)

* IS: 210-1978 — Grey iron castings
+ IS: 226-1975 — Structural steel (standard quality)

Vibrator Essential Requirements (Clause 3.1.1)

flowchart TD
    A

IS 10080: Materials for Vibration Machine

* IS:210-1978 — Specification for grey iron castings (3rd revision)

• IS:226-1975 — Specification for structural steel (standard quality) (5th revision)

Key Specifications for Mould (Clause 3.4, Table 2)

Notes:

• Materials chosen ensure durability, smooth operation, and compliance with Indian Standards.
• Cast iron parts require smooth surfaces to reduce wear.
• Spring steel is used for springs

IS 10080: Key Construction Specifications for Vibration Machine

1. Materials of Construction (Table 1)

2. Vibrator Construction (Clause 3.1.1)

3. Mould Dimensions & Tolerances (Table 2)

IS 10080: Vibrator Key Specifications & Tables

1. Vibrator Construction (Clause 3.1 & 3.1.1)

• Mass of vibrator on supporting springs:
  29 ± 0.5 kg (excluding solid eccentric and cube hut, including mould, clamp, hopper)

• Out of balance moment of eccentric shaft:
  0.0016 kg·m

• Normal running speed of eccentric shaft:
  12,000 ± 400 rpm

• Typical vibrator assembly:
  Vibrator with eccentric shaft mounted on 4 springs, coupled to a 3/4 hp motor at 2800 rpm via belt and pulley.

2. Materials of Construction (Clause 2.1, Table 1)

3. Mould Dimensions & Tolerances (Clause 3.4, Table 2)

IS 10080: Specifications for Bed of Vibration Machine

1. Bed Construction (Clause 3.2)

• Material: Steel channel (ISLC 200) as per Table 1.
• Features:
  • Four cast iron feet for support.
  • Four levelling bolts for adjustment.
  • Four support springs to position coiled springs.
  • Bracket for fixing one end of a tension spring.

2. Material Specification (Table 1)

3. Key Dimensions & Tolerances (Relevant for Mould, but indicative for bed design)

Summary:

• Use ISLC 200 steel channel for bed frame.
• Provide 4 cast iron feet and 4 levelling bolts.
• Fit 4 support springs and a tension spring bracket.
• Ensure alignment and leveling for vibration isolation.

flowchart LR
    Bed[Steel Channel Bed (ISLC 200)]
    Feet[4 Cast Iron Feet]
    LevellingBolts[4 Levelling Bolts]
    SupportSprings[4 Support Springs]
    TensionSpringBracket[Bracket for Tension Spring]

    Bed --> Feet
    Bed --> LevellingBolts
    Bed --> SupportSprings
    Bed --> TensionSpringBracket

This ensures a robust, adjustable, and vibration-isolated bed assembly per IS 10080.

IS 10080: Drive System for Vibration Machine

Key Specifications (Clauses 3.3.6, 3.1 & Table 1)

• Drive Type: Endless belt drive running on two pulleys — one on the motor shaft and one on the vibrator shaft.
• Motor: 3/4 hp, 2800 rpm, coupled via the belt.
• Belt: Woven cotton/nylon, endless type.
• Pulley Material: Mild steel or cast iron with smooth surface (IS: 210-1978 for cast iron; IS: 226-1975 for mild steel).
• Belt Guard: Mandatory for safety.
• Motor Support Plate: Mild steel (IS: 226-1975).

Materials Summary (Table 1)

Design Notes

• The natural frequency of the spring-mount system must be well below the motor running speed (2800 rpm) to avoid resonance.
• The endless belt drive ensures smooth power transmission with minimal slip.

Typical Drive Arrangement (Fig. 1 Summary)

graph LR
    M(Motor Pulley) -- Endless Belt --> V(Vibrator Pulley)
    V -- Eccentric Shaft --> Vibrator Assembly
    Vibrator Assembly -- Mounted on --> Springs
    Springs -- Supported on --> Bed

Practical Formula for Belt Drive Speed Ratio

[ \text{Speed Ratio} = \frac{N_{motor}}{N_{vibrator}} = \frac{D_{vibrator}}{D_{motor}} ]

• (N) = speed (rpm)
• (D) = pulley diameter (

IS 10080 - Mould Specifications (Clause 3.4 & Table 2)

Notes:

• The mould is a 70.6 mm cube used for concrete cube testing.
• The planeness tolerance ensures accurate volume and shape for reliable compressive strength tests.
• The wall thickness and base plate dimensions ensure durability and stability during testing.

graph TD
A[Mould] --> B[70.6 mm Cube]
A --> C[Wall Plate: 12 mm thick]
A --> D[Base Plate: 97x97x6 mm]
A --> E[Angles: 90° ± 0.5°]
A --> F[Planeness Tolerance]
F --> G[Interior Faces: 0.03 mm (new), 0.05 mm (used)]
F --> H[Base Plate: 0.15 mm]

This ensures the mould meets IS 10080 standards for concrete cube testing accuracy.

IS 10080: Poking Rod Specifications (Clause 3.5)

• Material: Non-absorptive, non-abrasive, non-brittle

  • Rubber compound (Shore A hardness 80 ± 10)
  • Seasoned teak wood (immersed 15 min in paraffin at ~200°C)
  • Ebonite fibre

• Dimensions:

  • Length: 150 to 175 mm
  • Cross-section: 12 mm x 25 mm
  • Tamping face: Blunt torpedo shape (see Fig. 3)
  • All corners rounded to 3 mm radius

Related Mould Dimensions (Clause 3.4 & Table 2):

Summary Diagram of Poking Rod Cross-section

graph LR
A[12 mm] -- Width --> B
A -- Thickness --> C[25 mm]
B --- D[Blunt Torpedo Face]
D --- E[Rounded Corners 3 mm radius]

This ensures proper compaction without damaging the specimen or mould.

IS 10080 - Marking Specifications for Vibration Machines

Key Marking Requirements (Clause 4.1)

Each vibration machine component shall be clearly and indelibly marked with:

• Manufacturer's name or registered trademark
• Date of manufacture

Marking should not interfere with machine performance.

BIS Certification Marking (Clause 4.2 & 4.2.1)

• Use of the Standard Mark is governed by the Bureau of Indian Standards Act, 1986.
• Manufacturers must obtain a license from BIS to use the Standard Mark.
• Details and conditions for licensing are available from BIS.

Mould Dimensions (Clause 3.4 & Table 2 Summary)

• Mould size: 70.6 mm cube for casting standard cement mortar cubes.
• Constructed as per Fig. 2 (not shown here).
• Dimensions and tolerances ensure uniformity for testing.

Summary Table for Marking

If you need mould dimension tables or detailed licensing procedures, refer directly to IS 10080 or BIS guidelines.

IS 10080 - Marking on Vibration Machine Components

Key Specifications (Clause 4.1)

• Marking must be clear and indelible on each vibration machine component.
• Marking should not interfere with apparatus performance.
• Required information:
  • Manufacturer's name or registered trademark (or both)
  • Date of manufacture

BIS Certification Marking (Clause 4.2)

• The product may carry the BIS Standard Mark.
• Use of Standard Mark is governed by the Bureau of Indian Standards Act, 1986.
• License conditions for Standard Mark use can be obtained from BIS.

Summary Table for Marking Requirements

Practical Notes:

• Marking methods: stamping, engraving, or durable labels.
• Location: On accessible parts without affecting machine function.
• Ensure durability against environmental conditions during use.

flowchart LR
    A[Component] --> B{Marking}
    B --> C[Manufacturer Name/Trademark]
    B --> D[Date of Manufacture]
    B --> E{BIS Standard Mark?}
    E -->|Yes| F[Apply BIS Mark (if licensed)]
    E -->|No| G[No BIS Mark Applied]

BIS Certification Marking as per IS 10080

• Standard Mark Use: Governed by the Bureau of Indian Standards Act, 1986.
• License Conditions: Details for granting license to use the Standard Mark are available from BIS.
• Marking Requirements on Vibration Machines (Clause 4.1):
  • Name of manufacturer or registered trademark (or both).
  • Date of manufacture.
• Marking Location: On each component and accessories without interfering with performance.

Summary Diagram of Marking Process

flowchart TD
    A[Manufacture Vibration Machine] --> B[Mark Components & Accessories]
    B --> C{Name/Trademark + Date}
    C --> D[Ensure Marking Does Not Affect Performance]
    D --> E[Use Standard Mark (if licensed)]

For detailed licensing, contact BIS directly.

IS 10080: Typical Vibration Machine and Mould Dimensions

1. Typical Vibration Machine (Clause 3.1 & 3.3.2)

• Motor: 3/4 hp, 2800 rpm, coupled by endless cotton/nylon belt.
• Vibrator: Cast iron, smooth surface (IS:210-1978).
• Eccentric Shaft: Mild steel (IS:226-1975), supported on 4 springs.
• Bed: ISLC 200 channel.
• Additional: Guide pieces for mould clamp, hopper mounting, tension spring.

Typical layout:

graph LR
    Motor --> Pulley
    Pulley --> EccentricShaft
    EccentricShaft --> Vibrator
    Vibrator --> Springs
    Springs --> Bed
    Vibrator --> MouldClamp
    MouldClamp --> CubeMould

2. Mould Dimensions & Tolerances (Clause 3.4, Table 2)

3. Materials (Clause 2.1, Table 1)