Specific Gravity Bench Test

Aggregate Specific Gravity Benches are critical instruments in any construction materials testing laboratory, providing the reliable support and controlled setup needed to determine the specific gravity, absorption, and density characteristics of both coarse and fine aggregates. These benches are engineered for high-accuracy performance and repeatability, helping technicians achieve dependable test results that fully comply with ASTM, AASHTO, and other recognized international testing standards.

Used alongside water tanks, suspended baskets, and precision balances, Aggregate Specific Gravity Benches form the backbone of aggregate quality evaluation. They ensure that every step of the testing process—from immersion to buoyancy measurement—is stable, controlled, and free from interference. For laboratories dedicated to producing consistent, trustworthy data, the Aggregate Specific Gravity Bench is an indispensable piece of equipment.

Aggregate Specific Gravity Benches – Overview and Purpose

The Aggregate Specific Gravity Bench is specifically designed to hold and stabilize water tanks and suspended baskets during density, absorption, and specific gravity testing. These tests are essential for evaluating how aggregates behave when exposed to moisture, determining their durability, suitability for concrete or asphalt mixes, and overall compliance with material specifications.

Accurate measurement of aggregate density and absorption helps engineers ensure:

• Proper concrete mix design

• Reliable asphalt performance

• Long-term structural strength

• Predictable behavior under load and moisture exposure

The stability and design of the Aggregate Specific Gravity Bench directly influence the reliability of these measurements. By providing a secure, vibration-free platform, the bench supports the precision and repeatability required for laboratory-grade testing.

 Aggregate Specific Gravity Bench Structure and Build Quality

Durable Frame for Enhanced Performance

The Aggregate Specific Gravity Bench is constructed with a solid, heavy-duty frame engineered to withstand continuous use in professional lab environments. Its rigid structure eliminates movement, ensuring the suspended basket and water tank remain completely stable throughout the test procedure.

This sturdy build helps laboratories maintain consistent results, even when running repeated or high-volume testing cycles.

Designed for Water Tanks and Suspended Baskets

A key function of the Aggregate Specific Gravity Bench is its ability to securely accommodate:

• Water tanks

• Suspended wire baskets

• Buoyancy measurement systems

The bench’s elevated platform allows the suspended basket to hang freely beneath the balance, which is essential for accurate underwater weighing. This design also ensures that no part of the equipment interferes with the water or aggregate sample during testing.

 Compatibility and Testing Standards

 Fully Compatible with ASTM and AASHTO Procedures

The Aggregate Specific Gravity Bench supports testing procedures outlined in major standards, including:

• ASTM C127 for coarse aggregate specific gravity and absorption

• ASTM C128 for fine aggregate specific gravity and absorption

• AASHTO T84 and AASHTO T85 for density and absorption testing

This compatibility ensures that the bench integrates seamlessly with other equipment required for compliance testing, making it a reliable choice for laboratories maintaining strict quality control processes.

Aggregate Specific Gravity Bench Operation and Features

Stable Support for Precise Measurements

During specific gravity testing, even minor vibrations or instability can disrupt measurement accuracy. The Aggregate Specific Gravity Bench solves this problem through a rigid, stable design that guarantees consistent positioning of both the suspended basket and water tank.

This high level of stability ensures that density and absorption readings remain accurate and repeatable—key requirements for reliable data.

 Efficient Workflow Integration

The bench’s layout is engineered for ease of use, allowing technicians to move efficiently through each step of the testing process. Its ergonomic height and spacing help reduce operator fatigue while improving overall workflow.

Included Components and Additional Accessories

The Aggregate Specific Gravity Bench is supplied as a robust structural frame ready for immediate integration into your laboratory testing setup.
However, the balance, baskets, and hooks must be ordered separately, ensuring laboratories can select the accessories best suited to their specific testing requirements.

This flexibility allows labs to:

• Pair the bench with digital or mechanical balances

• Choose baskets sized for fine or coarse aggregate testing

• Select hooks tailored to their weighing systems

 Why Choose the CANTROL Aggregate Specific Gravity Bench?

Laboratories rely on Aggregate Specific Gravity Benches because they deliver:

• Exceptional stability and durability

• Accurate support for ballast tanks and suspended baskets

• Consistency and repeatability in density and absorption testing

• Full compliance with ASTM, AASHTO, and international standards

• Structural reliability suitable for long-term, high-volume lab use

For high-quality aggregate characterization, the Aggregate Specific Gravity Bench is a dependable, accurate, and essential part of any professional materials testing laboratory.