IS 100781982AI Search Enabled✦ AI Generated

Specification for jolting apparatus for testing cement

IS 10078:1982 specifies the requirements for jolting apparatus used in preparing test specimens for determining the transverse strength of plastic mortar in cement testing. It outlines construction details, dimensions, and operational parameters to ensure reproducible and accurate test results. This standard is essential for manufacturers and testing laboratories involved in cement quality assessment and research in India.

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117Clauses Indexed
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1982Edition
Cement Concrete Aggregates and RCCCategory
Alternative search terms: IS 10078 PDF, IS 10078 pdf free download, IS 10078 free download pdf, IS10078 PDF, IS-10078 PDF, IS 10078 1982 PDF, IS 10078:1982 PDF, IS 10078-1982 PDF, IS 10078 (1982) PDF, IS 10078 1982 edition PDF, IS 10078 edition 1982 PDF

What This Standard Covers

IS 10078:1982 specifies the requirements for jolting apparatus used in preparing test specimens for determining the transverse strength of plastic mortar in cement testing. It outlines construction details, dimensions, and operational parameters to ensure reproducible and accurate test results. This standard is essential for manufacturers and testing laboratories involved in cement quality assessment and research in India.

Who Uses This Standard

  • Cement testing laboratory technicians
  • Quality control engineers in cement manufacturing
  • Materials testing equipment manufacturers
  • Civil engineers specializing in concrete technology
  • Research and development professionals in construction materials
  • Standards compliance officers
  • Construction project quality inspectors

Key Topics Covered

Design and construction of jolting apparatus
Dimensional tolerances and specifications
Mould design and compartments
Operational speed and mechanism of the cam
Mounting and securing of apparatus components
Marking and identification requirements
Calibration and maintenance considerations
Compliance with related IS standards (e.g., IS 4031, IS 10086)
Use of ISI certification mark
Reproducibility and repeatability in cement testing
Safety and operational guidelines
Material requirements for apparatus components

Table of Contents

1Scope

IS 10078 - Scope: Key Specifications and Tables

1. Mould Dimensions and Tolerances (Clause 4.2, Table 2)

DescriptionDimension
Length between inner faces160 ± 0.4 mm
Width between inner faces40 ± 0.1 mm
Height40 ± 0.1 mm
Thickness of wall plate (Min)10 mm
Angle between faces and base90 ± 0.5°
Permissible variation in planeness0.02 mm
Length of base plate276 ± 2 mm
Width of base plate240 ± 2 mm
  • Mould construction must comply with IS 10086-1982.

2. Materials for Jolting Apparatus (Clause 2.1, Table 1)

PartMaterialSpecial Requirements
TableMild steel-
Supporting armsAluminiumHardened to ≥ 650 Vickers Hardness (VH)
SpindleMild steelStriking face hardened
Projecting lugMild steelHardened to ≥ 650 VH
StopMild steelWearing face hardened to ≥ 650 VH
CamMild steelHardened to ≥ 650 VH
StandCast ironSmooth surface, IS:210-1978
BracketCast ironSmooth surface, IS:210-1978
MouldMild steelConforming to IS:226-1975

3. Rounding Off (Clause 0.5)

  • Final test values must be rounded per IS 2-1960.
  • Maintain the same significant figures as specified values.

flowchart TD
    A[Mould Dimensions] -->|Length, Width, Height| B[Table 2]
    A -->|Thickness, Angle| B
    A -->|Planeness, Base Plate
2References

IS 10078 Key References, Materials, and Dimensions

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

ComponentMaterialSpecial Requirements
TableMild steel-
Supporting armsAluminiumHardened to ≥ 650 Vickers Hardness (VH)
SpindleMild steelStriking face
Projecting lugMild steelHardened ≥ 650 VH
StopMild steelWearing face hardened ≥ 650 VH
CamMild steelHardened ≥ 650 VH
StandCast ironSmooth surface, per IS:210-1978*
BracketCast ironSmooth surface, per IS:210-1978*
MouldMild steelPer IS:226-1975+

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


2. Mould Dimensions and Tolerances (Table 2, Clause 4.2)

ParameterDimension
Length between inner faces160 ± 0.4 mm
Width between inner faces40 ± 0.1 mm
Height40 ± 0.1 mm
Thickness of wall plate (min)10 mm
Angle between faces and base90° ± 0.5°
Permissible planeness variation0.02 mm
Length of base plate276 ± 2 mm
Width of base plate240 ± 2 mm

3. Additional Specifications

  • Mould construction per IS 10086-1982.
  • Rounding off test results as per IS 2-1960 for compliance evaluation.

flowchart TD
    A[Materials] --> B[Table, Spindle, Mould: Mild Steel]
    A --> C[Supporting Arms: Aluminium, Hardened]
    A --> D[Stand & Bracket: Cast Iron (IS 
3Dimensions and Tolerances

Here are the key Dimensions and Tolerances for the 40x40x160 mm mould as per IS 10078 Clause 4.2:

DescriptionDimension / Tolerance
Length between inner faces160 ± 0.4 mm
Width between inner faces40 ± 0.1 mm
Height40 ± 0.1 mm
Thickness of wall plate (minimum)10 mm
Angle between faces and base90° ± 0.5°
Permissible variation in planeness0.02 mm
Length of base plate276 ± 2 mm
Width of base plate240 ± 2 mm

Additional Notes:

  • Material: Mould made of mild steel conforming to IS:226-1975.
  • Tolerance for other dimensions: Follow IS:2102-1969 for coarse class deviations.
  • Planeness tolerance ensures the mould walls are flat within 0.02 mm to maintain test accuracy.
flowchart TD
    A[Mould Dimensions] --> B[Length 160±0.4 mm]
    A --> C[Width 40±0.1 mm]
    A --> D[Height 40±0.1 mm]
    A --> E[Wall Thickness ≥ 10 mm]
    A --> F[Angle 90±0.5°]
    A --> G[Planeness ±0.02 mm]
    A --> H[Base Plate 276±2 x 240±2 mm]

This ensures precision in concrete testing moulds for consistent and reliable results.

4Construction

IS 10078: Key Construction Specifications for Jolting Apparatus

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

ComponentMaterialSpecial Requirements
TableMild steel-
Supporting armsAluminiumHardened to ≥ 650 Vickers Hardness (VH)
SpindleMild steelStriking face
Projecting lugMild steelHardened to ≥ 650 VH
StopMild steelWearing face hardened ≥ 650 VH
CamMild steelHardened to ≥ 650 VH
StandCast ironSmooth surface, IS:210-1978
BracketCast ironSmooth surface, IS:210-1978
MouldMild steelIS:226-1975 compliant

2. Mould Dimensions & Tolerances (Table 2, Clause 4.2)

ParameterDimension / Tolerance
Length between inner faces160 ± 0.4 mm
Width between inner faces40 ± 0.1 mm
Height40 ± 0.1 mm
Thickness of wall plate (min)10 mm
Angle between faces & base90° ± 0.5°
Permissible planeness variation0.02 mm
Length of base plate276 ± 2 mm
Width of base plate240 ± 2 mm

3. Standards Referenced

  • IS 210-1978: Grey iron castings (smooth surface for stand & bracket)
  • IS 226-1975: Structural steel for moulds
  • IS 10086-1982: General mould construction requirements

flowchart TD
    A[Jolting Apparatus] --> B[Table - Mild Steel]
    A --> C[Supporting Arms - Aluminium (Hardened)]
    A --> D[Spindle - Mild Steel (Striking Face)]
    A --> E[Project
5Operation

IS 10078: Key Specifications & Tables for Operation

1. Mould Dimensions & Tolerances (Clause 4.2)

DescriptionDimension
Length between inner faces160 ± 0.4 mm
Width between inner faces40 ± 0.1 mm
Height40 ± 0.1 mm
Thickness of wall plate (Min)10 mm
Angle between faces and base90 ± 0.5°
Permissible variation in planeness0.02 mm
Length of base plate276 ± 2 mm
Width of base plate240 ± 2 mm

2. Materials of Jolting Apparatus (Clause 2.1)

PartMaterialSpecial Requirements
TableMild steel-
Supporting armsAluminiumHardened to ≥ 650 VH or equivalent
SpindleMild steelStriking face
Projecting lugMild steelHardened ≥ 650 VH
StopMild steelWearing face hardened ≥ 650 VH
CamMild steelHardened ≥ 650 VH
StandCast ironSmooth surface per IS:210-1978
BracketCast ironSmooth surface per IS:210-1978
MouldMild steelPer IS:226-1975

3. Operational Parameters

  • Cam Speed: 60 ± 1 rpm (Clause 4.1.4)
  • Cam Function: Operates cam follower to raise and drop the table for jolting action.

4. Rounding Off Results (Clause 0.5)

  • Round off test results per IS:2-1960.
  • Retain significant figures equal to those in the specified values.

flowchart LR
    Cam -->|Rotates at 60±1 rpm| CamFollower
    CamFollower -->|Raises| Table
    Table -->|Drops under gravity| Mould
    M
6Marking

IS 10078 - Marking Requirements for Jolting Apparatus (Clause 6.1)

Each component of the jolting apparatus shall be clearly and indelibly marked with:

  • Manufacturer’s name or registered trademark (or both)
  • Date of manufacture

This marking must be done without interfering with the apparatus performance.


Related Dimensions (Clause 4.2, Table 2) for Mould (40x40x160 mm)

DescriptionDimension
Length between inner faces160 ± 0.4 mm
Width between inner faces40 ± 0.1 mm
Height40 ± 0.1 mm
Thickness of wall plate (Min)10 mm
Angle between faces and base90 ± 0.5°
Permissible variation in planeness0.02 mm
Length of base plate276 ± 2 mm
Width of base plate240 ± 2 mm

Materials of Construction (Clause 2.1, Table 1)

PartMaterialSpecial Requirements
TableMild steel-
Supporting armsAluminiumHardened to ≥ 650 Vickers Hardness (VH)
SpindleMild steelStriking face hardened
Projecting lugMild steelHardened ≥ 650 VH
StopMild steelWearing face hardened ≥ 650 VH
CamMild steelHardened ≥ 650 VH
StandCast ironSmooth surface, IS:210-1978
BracketCast ironSmooth surface, IS:210-1978
MouldMild steelConforming to IS:226-1975

Rounding Off (Clause 0.5)

  • Final test values shall be rounded as per IS 2-1960.
  • Retain the same number of significant figures as the specified value.

flowchart TD
    A[Component] --> B[Mark Manufacturer Name/Trademark]
7Compliance and Certification

IS 10078: Compliance and Certification Key Points

1. Dimensional Tolerances for 40x40x160 mm Mould (Clause 4.2, Table 2)

ParameterDimension / Tolerance
Length between inner faces160 ± 0.4 mm
Width between inner faces40 ± 0.1 mm
Height40 ± 0.1 mm
Thickness of wall plate (min)10 mm
Angle between faces and base90° ± 0.5°
Permissible planeness variation0.02 mm
Length of base plate276 ± 2 mm
Width of base plate240 ± 2 mm

2. Materials for Jolting Apparatus (Clause 2.1, Table 1)

ComponentMaterialSpecial Requirements
TableMild Steel-
Supporting ArmsAluminiumHardened to ≥ 650 Vickers Hardness (VH)
SpindleMild SteelStriking face hardened
Projecting LugMild SteelHardened to ≥ 650 VH
StopMild SteelWearing face hardened to ≥ 650 VH
CamMild SteelHardened to ≥ 650 VH
StandCast IronSmooth surface per IS:210-1978
BracketCast IronSmooth surface per IS:210-1978
MouldMild SteelConforming to IS:226-1975

3. Rounding Off Results

  • Final test/analysis values must be rounded per IS:2-1960.
  • Retain the same number of significant figures as specified in the standard.

Summary

  • Dimensional accuracy and material specifications are critical for compliance.
  • Hardness requirements ensure durability of wear parts.
  • Follow IS rounding rules for certification reporting.
flowchart TD
    A[Start: Manufacturing] --> B[Check Dimensions per Clause 

Popular Questions About IS 10078

?What are the specified dimensions and tolerances for the jolting apparatus and mould?

IS 10078: Dimensions & Tolerances for Jolting Apparatus and Mould

  • Mould Size: 40 × 40 × 160 mm (length × width × height)
ParameterDimension & Tolerance
Length between inner faces160 ± 0.4 mm
Width between inner faces40 ± 0.1 mm
Height40 ± 0.1 mm
Thickness of wall plate (minimum)10 mm
Angle between faces and base90° ± 0.5°
Permissible variation in planeness0.02 mm
Length of base plate276 ± 2 mm
Width of base plate240 ± 2 mm
  • Tolerances: Where not specified, apply coarse class deviations as per IS 2102:1969.

  • Construction: Follow IS 10086-1982 for mould construction details.

  • Jolting Apparatus: Dimensions as per Fig. 1 & 2 in IS 10078; nominal dimensions apply if not specified.

Loading diagram...

This ensures accurate specimen casting for transverse strength testing of plastic mortar.

?How is the cam mechanism designed and what is its operating speed?

Cam Mechanism Design (IS 10078)

  • The cam is mounted on the stand (Fig. 1) and rotates to operate the cam follower.
  • The cam follower raises the table and then allows it to drop, creating the jolting action.
  • The table has a hardened projecting lug on its underside where the cam follower acts.
  • Guide pieces ensure the mould's central compartment aligns directly above the impact points.
  • The combined mass of the table, mould, hopper, and clamps is 20 ± 1 kg.

Operating Speed

  • The cam is driven by an electric motor (recommended 1/3 hp) with reduction gear.
  • Operating speed is 60 ± 1 rpm.
  • A device should be provided to automatically stop the drive after 60 jolts.

Summary Table

ParameterValue
Cam speed60 ± 1 rpm
Motor power1/3 hp
Table + mould mass20 ± 1 kg
Concrete base size1 m × 0.3 m × 0.8 m
Loading diagram...

This ensures controlled, repetitive jolting for the apparatus as per IS 10078.

?What materials are recommended for constructing the mould and apparatus components?

Materials for Mould and Apparatus Components as per IS 10078:

ComponentMaterialSpecial Requirements
MouldMild steelConforming to IS: 226-1975
Hopper (part of mould)Steel or Non-ferrous metalVertical walls 20–40 mm height, tight fit (≤1 mm) inside mould compartments
TableMild steelMachined; projecting lug hardened to ≥ 650 Vickers Hardness (VH)
Supporting armsAluminiumHardened to ≥ 650 VH or equivalent
SpindleMild steelStriking face hardened
Projecting lugMild steelHardened to ≥ 650 VH or equivalent
StopMild steelWearing face hardened to ≥ 650 VH
CamMild steelHardened to ≥ 650 VH
StandCast ironSmooth surface, conforming to IS: 210-1978
BracketCast ironSmooth surface, conforming to IS: 210-1978

Additional Notes:

  • The mould rests on a machined steel base plate and is securely clamped.
  • The hopper must fit inside the mould compartments with ≤1 mm clearance.
  • Hardened faces ensure wear resistance and durability.

This ensures precision, durability, and conformity to testing standards.

?How should the apparatus be marked for identification and certification?

According to IS 10078, Clause 6.1 and 6.1.1, the jolting apparatus must be marked as follows:

  • Indelibly and clearly on each component, without affecting performance:

    • Manufacturer’s name or registered trademark (or both)
    • Date of manufacture
  • Optionally, the apparatus may bear the ISI Certification Mark, subject to licensing and regulatory provisions under the Indian Standards Institution (Certification Marks) Act.

This marking ensures traceability, authenticity, and quality assurance per IS standards.


Summary of Marking Requirements:

Marking ItemRequirement
Manufacturer's name/trademarkMust be clearly and indelibly marked
Date of manufactureMust be clearly and indelibly marked
ISI Certification MarkOptional, subject to ISI licensing

This practice assures compliance with quality control and facilitates identification during inspection or audits.

?How does IS 10078 relate to other cement testing standards like IS 4031?

IS 10078 specifies the requirements for jolting apparatus used in cement testing, focusing on equipment standardization to ensure reproducibility and accuracy.

Relationship with IS 4031:

  • IS 4031 covers methods of testing cement such as fineness, consistency, setting time, and strength.
  • IS 10078 complements IS 4031 by standardizing the equipment (jolting apparatus) used in tests like fineness determination (e.g., sieve or air permeability methods).
  • Without IS 10078-compliant apparatus, tests under IS 4031 may yield non-reproducible or inaccurate results.

Summary:

StandardScopeRole in Cement Testing
IS 4031Methods of testing cement propertiesDefines test procedures
IS 10078Specification for jolting apparatusEnsures standardized, accurate test equipment

This synergy ensures consistent, reliable cement testing across labs and manufacturers.

Loading diagram...

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