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General Items
RING MOULD AZA0789
- Standard ring mould for cement/mortar specimen formation
- Used in expansion, consistency, and setting tests
- Built from brass or gunmetal for durability
- Conforms to IS 4031 and ASTM C151 standards
- Suitable for use with Le Chatelier apparatus
Description
Ring Mould is a critical component in cement and mortar testing, used to form standardized specimens for expansion, consistency, and setting time evaluations. Crafted from durable metals like brass or gunmetal, this mould ensures accurate, repeatable sample preparation for laboratory testing — whether in cement manufacturing units, third-party QC labs, or academic research facilities.
Most commonly, the Ring Mould is associated with tests like Le Chatelier expansion test, which determines the soundness of cement. This test evaluates the material’s volume stability after setting, ensuring that it won’t crack or distort in service. The Ring Mould provides a uniform containment structure for the cement paste, enabling controlled expansion measurement.
As per IS 4031 (Part 3):1988 – Methods of Physical Tests for Hydraulic Cement: Determination of Soundness, the Ring Mould must be used with a split cylinder (typically in the Le Chatelier apparatus) to assess cement expansion. Similarly, ASTM C151 – Standard Test Method for Autoclave Expansion of Hydraulic Cement references a comparable design for performing high-temperature expansion tests.
Key Features:
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Cylindrical mould with precise inner diameter and height
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Typically includes a slit or split for use with Le Chatelier setup
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Smooth inner walls for easy demoulding of samples
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Designed to hold freshly prepared cement paste or mortar
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Manufactured to tight tolerances for repeatability
The Ring Mould is critical to preparing specimens that reflect true material behavior under controlled conditions. This consistency is especially important in comparative testing, quality certification, and research-based formulation trials.
Common Applications:
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Le Chatelier soundness testing
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Autoclave expansion tests
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Cement setting time comparisons
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Consistency and flow behavior studies
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Civil engineering education and training labs
In Le Chatelier tests, the mould is filled with a cement paste of standard consistency. Once set and subjected to boiling or autoclave conditions, the distance between the mould’s indicators is measured before and after treatment to assess expansion. This helps detect excess free lime or magnesia, which can cause late-stage cracking in cementitious structures.
Why Choose This Ring Mould?
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Compliant with international standards
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Highly reusable and resistant to chemical wear
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Accurate dimensional stability for repeat testing
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Works with Le Chatelier apparatus for expansion measurement
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Lightweight and easy to clean
The Ring Mould may also be used independently for creating mortar rings in flow and shrinkage tests. When handled correctly, it allows consistent formation of samples for both destructive and non-destructive analysis.
Specifications:
| Parameter | Specification |
|---|---|
| Inner Diameter | 30 mm – 33 mm |
| Height | 30 mm – 33 mm |
| Material | Brass / Gunmetal |
| Type | Solid ring or split ring (as per test) |
| Finish | Machined and polished |
| Standards Compliance | IS 4031 (Part 3), ASTM C151 |
| Reusability | Yes, with proper cleaning |
| Application | Soundness, setting, and expansion testing |
Frequently Asked Questions (FAQ):
Q1: What is the Ring Mould used for in cement testing?
It’s primarily used for forming cement or mortar specimens to test expansion, soundness, and setting time.
Q2: Which standards apply to Ring Mould usage?
It conforms to IS 4031 Part 3 for soundness testing and ASTM C151 for autoclave expansion.
Q3: Is this mould reusable?
Yes. When cleaned properly after each use, the mould maintains its dimensional accuracy and finish over many test cycles.
Q4: Can I use this mould with Le Chatelier apparatus?
Yes. This mould is designed to fit seamlessly into Le Chatelier expansion testing setups.
Q5: What material is preferred — brass or gunmetal?
Both are corrosion-resistant and durable. Gunmetal offers slightly better wear resistance under frequent thermal cycling.
Additional information
| Inner Diameter |
30 mm – 33 mm |
|---|---|
| Height |
30 mm – 33 mm |
| Material |
Brass / Gunmetal |
| Type |
Solid ring or split ring (as per test) |
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Related products
JOLTING APPARATUS AZA0802
The AZA0802 Jolting Apparatus is a precision-engineered laboratory instrument designed for uniform compaction of cement mortar specimens, ensuring reproducibility and accuracy in strength testing. It plays a vital role in preparing mortar prisms for compressive and flexural strength tests, eliminating air voids and ensuring homogeneous density throughout each specimen.
Manufactured in accordance with IS 10080:1982, and suitable for use under EN 196-1 and ASTM C348 testing standards, the AZA0802 is essential for any laboratory involved in cement quality evaluation, research, or certification.
Whether used in construction QC labs, cement manufacturing units, academic institutions, or R&D centers, the AZA0802 offers dependable, consistent, and safe compaction performance for standardized mortar testing.
Why Compaction Matters in Mortar Testing
The quality and reliability of mortar strength tests depend heavily on the degree of compaction during specimen preparation. Air voids, improper leveling, or inconsistent compaction can lead to inaccurate test values and unreliable performance assessments.
The AZA0802 utilizes a mechanical cam-driven system delivering 60 precise jolts per minute, effectively removing entrapped air from the mortar mix. An inbuilt 60-second automatic timer ensures standard-compliant compaction by stopping the machine after the required number of jolts.
This ensures:
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Highly consistent mortar density
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Repeatable strength results
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Compliance with national and international testing standards
Applications Across Industries
The AZA0802 Jolting Apparatus is widely used in:
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Cement manufacturing QC laboratories
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Construction and civil engineering testing labs
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Educational and training institutes
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Material certification & calibration laboratories
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R&D units working on advanced cement products
Key Features & Benefits
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Standard-Compliant Operation
Conforms fully to IS 10080, EN 196-1, and ASTM C348 for mortar compaction. -
Precise Jolting Mechanism
Delivers 60 calibrated jolts/min, with smooth camshaft motion ensuring uniform compaction. -
Heavy-Duty Mild Steel Frame
Rigid, vibration-resistant structure enhances accuracy and long-term reliability. -
Automatic Timer Control
Pre-set 60-second timer ensures correct compaction cycles without operator intervention. -
Safety Enclosure
Protective guard minimizes risk by shielding moving components during operation. -
Quick-Action Mould Clamping
Secure clamping mechanism designed for 40 × 40 × 160 mm prism moulds. -
Space-Saving Design
Compact, bench-top model ideal for laboratories with limited workspace. -
Low-Maintenance Drive System
Enclosed mechanism requires minimal lubrication and cleaning.
Technical Specifications
| Specification | Details |
|---|---|
| Model | AZA0802 |
| Application | Mortar Prism Compaction |
| Conformity | IS 10080, EN 196-1, ASTM C348 |
| Jolts per Minute | 60 jolts/min (customizable) |
| Timer | 60-sec automatic timer |
| Compatible Mould Size | 40 × 40 × 160 mm |
| Motor Power | 0.25 HP, 230 V AC |
| Construction | Mild steel frame, powder coated |
| Dimensions (L × W × H) | Approx. 500 × 350 × 450 mm |
| Weight | Approx. 35–40 kg |
| Warranty | 1 Year (Manufacturing defects only) |
| Made In | India |
Frequently Asked Questions (FAQ)
Q1: What is the purpose of a jolting apparatus?
It compacts mortar uniformly by applying controlled jolts, removing air pockets and ensuring specimen consistency for strength testing.
Q2: How many jolts does the AZA0802 deliver?
It delivers 60 jolts in one minute, as required by IS 10080. Custom settings are available upon request.
Q3: Which moulds can it be used with?
It is compatible with all standard 40 × 40 × 160 mm mortar prism moulds.
Q4: Is it suitable for educational laboratories?
Yes. Safety guards, controlled operation, and automatic timing make it ideal for use by students under supervision.
Q5: Does it require heavy maintenance?
No. The apparatus has a sealed mechanism requiring minimal lubrication and is easy to clean after each session.
PLUNGER PENETRATION APPARATUS AZA0808
VIBRATING MACHINE AZA0806
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