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.
Overview
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.
Audience
Contents
Structure
IS 10078 - Scope: Key Specifications and Tables
| Description | Dimension |
|---|---|
| Length between inner faces | 160 ± 0.4 mm |
| Width between inner faces | 40 ± 0.1 mm |
| Height | 40 ± 0.1 mm |
| Thickness of wall plate (Min) | 10 mm |
| Angle between faces and base | 90 ± 0.5° |
| Permissible variation in planeness | 0.02 mm |
| Length of base plate | 276 ± 2 mm |
| Width of base plate | 240 ± 2 mm |
| Part | Material | Special Requirements |
|---|---|---|
| Table | Mild steel | - |
| Supporting arms | Aluminium | Hardened to ≥ 650 Vickers Hardness (VH) |
| Spindle | Mild steel | Striking face hardened |
| Projecting lug | Mild steel | Hardened to ≥ 650 VH |
| Stop | Mild steel | Wearing face hardened to ≥ 650 VH |
| Cam | Mild steel | Hardened to ≥ 650 VH |
| Stand | Cast iron | Smooth surface, IS:210-1978 |
| Bracket | Cast iron | Smooth surface, IS:210-1978 |
| Mould | Mild steel | Conforming to IS:226-1975 |
flowchart TD
A[Mould Dimensions] -->|Length, Width, Height| B[Table 2]
A -->|Thickness, Angle| B
A -->|Planeness, Base Plate
IS 10078 Key References, Materials, and Dimensions
| Component | Material | Special Requirements |
|---|---|---|
| Table | Mild steel | - |
| Supporting arms | Aluminium | Hardened to ≥ 650 Vickers Hardness (VH) |
| Spindle | Mild steel | Striking face |
| Projecting lug | Mild steel | Hardened ≥ 650 VH |
| Stop | Mild steel | Wearing face hardened ≥ 650 VH |
| Cam | Mild steel | Hardened ≥ 650 VH |
| Stand | Cast iron | Smooth surface, per IS:210-1978* |
| Bracket | Cast iron | Smooth surface, per IS:210-1978* |
| Mould | Mild steel | Per IS:226-1975+ |
*IS 210-1978: Grey iron castings; IS 226-1975: Structural steel (standard quality).
| Parameter | Dimension |
|---|---|
| Length between inner faces | 160 ± 0.4 mm |
| Width between inner faces | 40 ± 0.1 mm |
| Height | 40 ± 0.1 mm |
| Thickness of wall plate (min) | 10 mm |
| Angle between faces and base | 90° ± 0.5° |
| Permissible planeness variation | 0.02 mm |
| Length of base plate | 276 ± 2 mm |
| Width of base plate | 240 ± 2 mm |
flowchart TD
A[Materials] --> B[Table, Spindle, Mould: Mild Steel]
A --> C[Supporting Arms: Aluminium, Hardened]
A --> D[Stand & Bracket: Cast Iron (IS
Here are the key Dimensions and Tolerances for the 40x40x160 mm mould as per IS 10078 Clause 4.2:
| Description | Dimension / Tolerance |
|---|---|
| Length between inner faces | 160 ± 0.4 mm |
| Width between inner faces | 40 ± 0.1 mm |
| Height | 40 ± 0.1 mm |
| Thickness of wall plate (minimum) | 10 mm |
| Angle between faces and base | 90° ± 0.5° |
| Permissible variation in planeness | 0.02 mm |
| Length of base plate | 276 ± 2 mm |
| Width of base plate | 240 ± 2 mm |
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.
IS 10078: Key Construction Specifications for Jolting Apparatus
| Component | Material | Special Requirements |
|---|---|---|
| Table | Mild steel | - |
| Supporting arms | Aluminium | Hardened to ≥ 650 Vickers Hardness (VH) |
| Spindle | Mild steel | Striking face |
| Projecting lug | Mild steel | Hardened to ≥ 650 VH |
| Stop | Mild steel | Wearing face hardened ≥ 650 VH |
| Cam | Mild steel | Hardened to ≥ 650 VH |
| Stand | Cast iron | Smooth surface, IS:210-1978 |
| Bracket | Cast iron | Smooth surface, IS:210-1978 |
| Mould | Mild steel | IS:226-1975 compliant |
| Parameter | Dimension / Tolerance |
|---|---|
| Length between inner faces | 160 ± 0.4 mm |
| Width between inner faces | 40 ± 0.1 mm |
| Height | 40 ± 0.1 mm |
| Thickness of wall plate (min) | 10 mm |
| Angle between faces & base | 90° ± 0.5° |
| Permissible planeness variation | 0.02 mm |
| Length of base plate | 276 ± 2 mm |
| Width of base plate | 240 ± 2 mm |
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
IS 10078: Key Specifications & Tables for Operation
| Description | Dimension |
|---|---|
| Length between inner faces | 160 ± 0.4 mm |
| Width between inner faces | 40 ± 0.1 mm |
| Height | 40 ± 0.1 mm |
| Thickness of wall plate (Min) | 10 mm |
| Angle between faces and base | 90 ± 0.5° |
| Permissible variation in planeness | 0.02 mm |
| Length of base plate | 276 ± 2 mm |
| Width of base plate | 240 ± 2 mm |
| Part | Material | Special Requirements |
|---|---|---|
| Table | Mild steel | - |
| Supporting arms | Aluminium | Hardened to ≥ 650 VH or equivalent |
| Spindle | Mild steel | Striking face |
| Projecting lug | Mild steel | Hardened ≥ 650 VH |
| Stop | Mild steel | Wearing face hardened ≥ 650 VH |
| Cam | Mild steel | Hardened ≥ 650 VH |
| Stand | Cast iron | Smooth surface per IS:210-1978 |
| Bracket | Cast iron | Smooth surface per IS:210-1978 |
| Mould | Mild steel | Per IS:226-1975 |
flowchart LR
Cam -->|Rotates at 60±1 rpm| CamFollower
CamFollower -->|Raises| Table
Table -->|Drops under gravity| Mould
M
IS 10078 - Marking Requirements for Jolting Apparatus (Clause 6.1)
Each component of the jolting apparatus shall be clearly and indelibly marked with:
This marking must be done without interfering with the apparatus performance.
| Description | Dimension |
|---|---|
| Length between inner faces | 160 ± 0.4 mm |
| Width between inner faces | 40 ± 0.1 mm |
| Height | 40 ± 0.1 mm |
| Thickness of wall plate (Min) | 10 mm |
| Angle between faces and base | 90 ± 0.5° |
| Permissible variation in planeness | 0.02 mm |
| Length of base plate | 276 ± 2 mm |
| Width of base plate | 240 ± 2 mm |
| Part | Material | Special Requirements |
|---|---|---|
| Table | Mild steel | - |
| Supporting arms | Aluminium | Hardened to ≥ 650 Vickers Hardness (VH) |
| Spindle | Mild steel | Striking face hardened |
| Projecting lug | Mild steel | Hardened ≥ 650 VH |
| Stop | Mild steel | Wearing face hardened ≥ 650 VH |
| Cam | Mild steel | Hardened ≥ 650 VH |
| Stand | Cast iron | Smooth surface, IS:210-1978 |
| Bracket | Cast iron | Smooth surface, IS:210-1978 |
| Mould | Mild steel | Conforming to IS:226-1975 |
flowchart TD
A[Component] --> B[Mark Manufacturer Name/Trademark]
IS 10078: Compliance and Certification Key Points
| Parameter | Dimension / Tolerance |
|---|---|
| Length between inner faces | 160 ± 0.4 mm |
| Width between inner faces | 40 ± 0.1 mm |
| Height | 40 ± 0.1 mm |
| Thickness of wall plate (min) | 10 mm |
| Angle between faces and base | 90° ± 0.5° |
| Permissible planeness variation | 0.02 mm |
| Length of base plate | 276 ± 2 mm |
| Width of base plate | 240 ± 2 mm |
| Component | Material | Special Requirements |
|---|---|---|
| Table | Mild Steel | - |
| Supporting Arms | Aluminium | Hardened to ≥ 650 Vickers Hardness (VH) |
| Spindle | Mild Steel | Striking face hardened |
| Projecting Lug | Mild Steel | Hardened to ≥ 650 VH |
| Stop | Mild Steel | Wearing face hardened to ≥ 650 VH |
| Cam | Mild Steel | Hardened to ≥ 650 VH |
| Stand | Cast Iron | Smooth surface per IS:210-1978 |
| Bracket | Cast Iron | Smooth surface per IS:210-1978 |
| Mould | Mild Steel | Conforming to IS:226-1975 |
flowchart TD
A[Start: Manufacturing] --> B[Check Dimensions per Clause
Frequently Asked
IS 10078: Dimensions & Tolerances for Jolting Apparatus and Mould
| Parameter | Dimension & Tolerance |
|---|---|
| Length between inner faces | 160 ± 0.4 mm |
| Width between inner faces | 40 ± 0.1 mm |
| Height | 40 ± 0.1 mm |
| Thickness of wall plate (minimum) | 10 mm |
| Angle between faces and base | 90° ± 0.5° |
| Permissible variation in planeness | 0.02 mm |
| Length of base plate | 276 ± 2 mm |
| Width of base plate | 240 ± 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.
Cam Mechanism Design (IS 10078)
Operating Speed
| Parameter | Value |
|---|---|
| Cam speed | 60 ± 1 rpm |
| Motor power | 1/3 hp |
| Table + mould mass | 20 ± 1 kg |
| Concrete base size | 1 m × 0.3 m × 0.8 m |
Loading diagram...
This ensures controlled, repetitive jolting for the apparatus as per IS 10078.
Materials for Mould and Apparatus Components as per IS 10078:
| Component | Material | Special Requirements |
|---|---|---|
| Mould | Mild steel | Conforming to IS: 226-1975 |
| Hopper (part of mould) | Steel or Non-ferrous metal | Vertical walls 20–40 mm height, tight fit (≤1 mm) inside mould compartments |
| Table | Mild steel | Machined; projecting lug hardened to ≥ 650 Vickers Hardness (VH) |
| Supporting arms | Aluminium | Hardened to ≥ 650 VH or equivalent |
| Spindle | Mild steel | Striking face hardened |
| Projecting lug | Mild steel | Hardened to ≥ 650 VH or equivalent |
| Stop | Mild steel | Wearing face hardened to ≥ 650 VH |
| Cam | Mild steel | Hardened to ≥ 650 VH |
| Stand | Cast iron | Smooth surface, conforming to IS: 210-1978 |
| Bracket | Cast iron | Smooth surface, conforming to IS: 210-1978 |
Additional Notes:
This ensures precision, durability, and conformity to testing standards.
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:
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.
| Marking Item | Requirement |
|---|---|
| Manufacturer's name/trademark | Must be clearly and indelibly marked |
| Date of manufacture | Must be clearly and indelibly marked |
| ISI Certification Mark | Optional, subject to ISI licensing |
This practice assures compliance with quality control and facilitates identification during inspection or audits.
IS 10078 specifies the requirements for jolting apparatus used in cement testing, focusing on equipment standardization to ensure reproducibility and accuracy.
| Standard | Scope | Role in Cement Testing |
|---|---|---|
| IS 4031 | Methods of testing cement properties | Defines test procedures |
| IS 10078 | Specification for jolting apparatus | Ensures standardized, accurate test equipment |
This synergy ensures consistent, reliable cement testing across labs and manufacturers.
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