SHRINKAGE BAR MOULD AZA0794

Description

Shrinkage Bar Mould AZA0794 is an essential testing accessory used to evaluate the drying shrinkage properties of cement, concrete, and mortar. Offered by Azalab, this precision-engineered mould helps in assessing the dimensional stability of cementitious materials when exposed to drying environments over time.

The mould is used to cast prismatic specimens of standard size, which are later measured for length change to determine the percentage of shrinkage. This test is vital in ensuring that the cement or concrete mix design does not exhibit excessive shrinkage that could lead to cracking, structural weakness, or durability issues.

Applications:

• Testing cement and mortar for volume stability
• Evaluating drying shrinkage under controlled humidity and temperature
• Used in quality control and research labs
• Compliance testing for construction material standards

Product Features:

The AZA0794 Shrinkage Bar Mould is designed to provide repeatable, accurate results under standardized testing conditions. It includes:

• A split mould made of gunmetal or mild steel
• Internal dimensions: 25 mm × 25 mm × 285 mm
• Stainless steel reference inserts at each end to act as measurement points
• A machined base plate to ensure level casting
• Can be clamped during casting to reduce warping

Once the specimen is cast and cured, a length comparator is used to measure the distance between the embedded reference points, before and after drying, to calculate shrinkage.

Construction & Material:

The mould body is fabricated from rust-resistant, heavy-duty metal (mild steel or gunmetal). The surfaces are machine-ground to ensure precision and durability over repeated uses. The reference inserts are securely fixed and aligned for compatibility with standard comparators.

Standard Compliance:

This product complies with the following standards:

• IS 4031 (Part 10): Methods of physical tests for hydraulic cement
• ASTM C490: Standard practice for use of shrinkage molds

Use Procedure:

1. Coat the interior of the mould with a release agent.
2. Fill the mould with cement/mortar mix in two layers, compacting each layer.
3. Strike off the surface and cover with a glass plate.
4. Store the specimen for 24 hours under standard conditions.
5. Remove the specimen and store in humidity-controlled environment for 7, 14, or 28 days.
6. Measure the length change using a Length Comparator.

This process helps identify early-age drying shrinkage, which directly affects concrete cracking potential.

Benefits of AZA0794 from Azalab:

• Precision-made to ensure minimal dimensional error
• Durable construction suitable for frequent lab use
• Compatible with all major comparator systems
• Quick shipping and after-sales support available
• Trusted by construction labs, universities, and QC teams across India

You can view the IS 4031 testing procedure here:
IS 4031 (Part 10) – Drying Shrinkage Test

Explore more cement testing products at Azalab’s official website

 Specifications:

 Frequently Asked Questions (FAQ):

Q1: What is the primary use of AZA0794 Shrinkage Bar Mould?
A: It is used to cast cement or mortar specimens to evaluate drying shrinkage under standardized test conditions.

Q2: What size specimens can be cast in this mould?
A: The mould casts specimens of 25 mm × 25 mm × 285 mm, as per IS 4031 standards.

Q3: Does it come with reference points for length measurement?
A: Yes, it includes stainless steel inserts at both ends for use with a Length Comparator.

Q4: What material is the mould made of?
A: It is typically made of heavy-duty mild steel or gunmetal for durability and corrosion resistance.

Q5: Can this be used for concrete mixes as well?
A: Yes, it can be used for cement, mortar, and fine concrete shrinkage testing applications.