Aggregate Crushing Value (ACV) Device

High-Precision Aggregate Crushing Value Device for Reliable Aggregate Strength Testing

The Aggregate Crushing Value (ACV) Device is an essential laboratory instrument used to determine the crushing resistance and compressive strength of coarse aggregates. It evaluates how aggregates perform under gradually applied compressive loads, helping engineers assess their suitability for use in concrete, asphalt, road construction, railway projects, and other infrastructure developments.

Since aggregates form the largest portion of concrete and pavement materials, their resistance to crushing is a key indicator of structural durability and load-bearing performance. The ACV Device enables laboratories to produce accurate, repeatable, and standards-compliant results, ensuring only high-quality aggregates are used in construction projects.

At QC LAB Solution Bangladesh, we provide premium-quality Aggregate Crushing Value Devices designed to meet the needs of construction companies, material testing laboratories, universities, research institutions, and government agencies across Bangladesh.

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What is an Aggregate Crushing Value (ACV) Device?

The Aggregate Crushing Value Device is a laboratory apparatus used to determine the Aggregate Crushing Value (ACV), which represents the percentage of fine material produced when a standard aggregate sample is subjected to a specified compressive load.

The lower the ACV, the stronger and more durable the aggregate.

• Low ACV = Strong, durable aggregate with excellent crushing resistance.
• High ACV = Weaker aggregate that is more susceptible to crushing under load.

The ACV test is one of the most widely accepted methods for evaluating aggregate quality in civil engineering and highway construction.

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Importance of the Aggregate Crushing Value Test

Using an Aggregate Crushing Value Device helps to:

• Assess aggregate strength and durability.
• Evaluate resistance to crushing under compressive loads.
• Select suitable aggregates for concrete and road construction.
• Ensure compliance with quality specifications.
• Improve pavement and structural performance.
• Reduce the risk of aggregate failure.
• Support laboratory quality assurance (QA) and quality control (QC).
• Increase the service life of infrastructure projects.

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Principle of the Test

A prepared aggregate sample is placed inside a steel cylinder and subjected to a gradually applied compressive load using a Compression Testing Machine (CTM). After loading, the crushed material is sieved through a 2.36 mm sieve, and the percentage of fines generated is calculated.

The Aggregate Crushing Value is determined using the following formula:

ACV (%) = (Weight of material passing 2.36 mm sieve ÷ Total weight of sample) × 100

A lower percentage indicates higher aggregate strength and better suitability for heavy-duty construction applications.

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Key Features of the Aggregate Crushing Value Device

• Manufactured from hardened steel for long service life
• Precision-engineered cylinder, plunger, and base plate
• Corrosion-resistant finish
• Easy specimen preparation and testing
• High dimensional accuracy
• Suitable for repeated laboratory use
• Compatible with standard Compression Testing Machines (CTMs)
• Complies with BS and IS testing standards
• Low maintenance and easy cleaning

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Technical Specifications

Typical specifications include:

• Material: Hardened steel
• Cylinder: Precision-machined steel cylinder
• Plunger: Hardened steel plunger
• Base Plate: Heavy-duty steel base
• Applicable Aggregate Size: Typically 10–12.5 mm (as specified by the test standard)
• Compatible Load Frame: Compression Testing Machine (CTM)
• Finish: Anti-corrosion coated

Specifications may vary depending on the manufacturer and applicable standards.

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Equipment Required for the ACV Test

A complete Aggregate Crushing Value test setup typically includes:

• Aggregate Crushing Value Device
• Compression Testing Machine (CTM)
• Cylindrical Measure
• Tamping Rod
• 2.36 mm IS Sieve
• Laboratory Balance
• Drying Oven
• Sample Tray
• Scoop
• Cleaning Brush

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Test Procedure

The Aggregate Crushing Value Test generally involves the following steps:

1. Sample Preparation

Prepare a clean, oven-dried aggregate sample of the specified size fraction.

2. Filling the Cylinder

Fill the ACV cylinder in layers and compact each layer using the standard tamping rod.

3. Compression Loading

Place the cylinder assembly in a Compression Testing Machine and apply the specified compressive load according to the relevant standard.

4. Sieving

After crushing, sieve the sample through a 2.36 mm sieve.

5. Calculation

Determine the weight of fines passing the sieve and calculate the Aggregate Crushing Value.

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Common Testing Standards

The Aggregate Crushing Value Device is designed to comply with internationally recognized standards, including:

• BS 812 Part 110
• IS 2386 (Part IV)
• EN 1097 (related aggregate mechanical testing)
• National highway and construction authority specifications

Following these standards ensures accurate, repeatable, and internationally accepted test results.

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Applications

The Aggregate Crushing Value Device is widely used in:

• Aggregate production plants
• Highway construction projects
• Bridge engineering
• Airport pavement construction
• Ready-mix concrete plants
• Asphalt production facilities
• Civil engineering laboratories
• Universities and research institutions
• Government quality control agencies
• Infrastructure development projects

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Benefits of Using an Aggregate Crushing Value Device

• Accurate aggregate strength evaluation
• Reliable quality control
• Compliance with international standards
• Improved material selection
• Enhanced pavement durability
• Better concrete performance
• Reduced maintenance costs
• Long-lasting laboratory equipment
• Increased confidence in construction quality

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Why Choose QC LAB Solution Bangladesh?

QC LAB Solution Bangladesh is a trusted supplier of construction material testing equipment and complete laboratory solutions for civil engineering applications.

Our Advantages

• Premium-quality Aggregate Crushing Value Devices
• Equipment compliant with BS, IS, ASTM, and EN standards
• Professional installation and commissioning
• Calibration and maintenance support
• Technical training
• Reliable after-sales service
• Competitive pricing
• Fast nationwide delivery across Bangladesh
• Expert technical consultation

Our commitment is to provide laboratories and construction professionals with dependable testing equipment that delivers precise, consistent, and standards-compliant results.

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Conclusion

The Aggregate Crushing Value (ACV) Device is an indispensable tool for evaluating the crushing resistance and mechanical strength of coarse aggregates used in construction. By ensuring that aggregates can withstand compressive loads, the ACV test contributes to safer, stronger, and more durable roads, bridges, pavements, and concrete structures.

With advanced Aggregate Crushing Value testing equipment from QC LAB Solution Bangladesh, laboratories can achieve accurate, repeatable, and internationally compliant test results while maintaining the highest standards of quality control.

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Frequently Asked Questions (FAQs)

1. What is an Aggregate Crushing Value Device?

It is a laboratory apparatus used to determine the crushing resistance of coarse aggregates by measuring the percentage of fines produced after applying a standard compressive load.

2. What is the purpose of the ACV Test?

The test evaluates aggregate strength and helps determine whether the material is suitable for concrete, asphalt, road, and bridge construction.

3. What does a low Aggregate Crushing Value indicate?

A low ACV indicates that the aggregate has high crushing resistance, excellent strength, and is suitable for heavy-duty construction applications.

4. Which standards are followed for the ACV Test?

The most commonly followed standards are BS 812 Part 110 and IS 2386 (Part IV).

5. Which industries use the Aggregate Crushing Value Device?

It is widely used in construction companies, aggregate quarries, highway projects, concrete plants, material testing laboratories, universities, and government quality control agencies.