What is a Buoyancy Balance?

A Buoyancy Balance is a laboratory testing device used to determine the specific gravity of concrete and aggregates by measuring the specimen weight in air and water. The hydrostatic weighing principle enables precise calculation of density, volume, and water displacement characteristics.

This test method is essential for assessing concrete quality, aggregate properties, and material consistency in accordance with ASTM, EN, TS EN, and AASHTO standards.

Key Features of the BESMAK Buoyancy Balance

• Suitable for concrete and aggregate specific gravity determination
• Hydrostatic weighing method for high accuracy measurements
• Robust steel frame construction
• Easy lifting mechanism for specimen immersion
• Supplied with sample plate, water tank, and wire basket
• Suitable for routine laboratory testing
• Fast and reliable density calculations
• Designed for long service life and low maintenance
• Compatible with international testing standards

Technical Specifications

Applications of Buoyancy Balance Testing

The BESMAK Buoyancy Balance is commonly used for:

• Concrete density determination
• Concrete specific gravity testing
• Aggregate density testing
• Aggregate specific gravity determination
• Quality control of construction materials
• Research and development laboratories
• University laboratories
• Highway and infrastructure projects
• Ready-mix concrete plants

Why Specific Gravity Testing is Important

Specific gravity and density values are critical indicators of material quality. Accurate testing helps engineers:

• Verify concrete mix consistency
• Evaluate aggregate quality
• Detect material defects
• Ensure compliance with project specifications
• Improve durability performance
• Optimize concrete mix designs

The Buoyancy Balance provides dependable results that support quality assurance programs in modern construction laboratories.

International Standards

The BESMAK Buoyancy Balance complies with major international testing standards including:

• ASTM C127
• ASTM C128
• ASTM C20
• TS EN 1097-6
• AASHTO T85
• AASHTO T166
• AASHTO T209
• AASHTO T275
• D2041
• D2726
• C642
• C830
• D1188

Why Choose BESMAK Buoyancy Balance?

BESMAK manufactures advanced material testing equipment for laboratories worldwide. With more than 30 years of experience and exports to over 75 countries, BESMAK provides reliable, durable, and standards-compliant testing solutions.

Benefits include:

• High measurement accuracy
• Durable laboratory design
• Easy operation
• Compliance with international standards
• Worldwide technical support
• Fast spare parts availability

FAQ

What is a Buoyancy Balance used for?

A Buoyancy Balance is used to determine the specific gravity, density, and unit weight of concrete and aggregate specimens through hydrostatic weighing.

How does a Buoyancy Balance work?

The specimen is weighed both in air and in water. The difference between these measurements is used to calculate density and specific gravity.

Why is specific gravity testing important?

Specific gravity testing helps evaluate material quality, consistency, durability, and compliance with engineering standards.

Can the Buoyancy Balance be used for aggregate testing?

Yes. The equipment is suitable for both concrete and aggregate density and specific gravity determination.

Which standards are supported by the Buoyancy Balance?

The system complies with ASTM, TS EN, AASHTO, and other internationally recognized standards for density and specific gravity testing.