Brovold Superpave Gyratory Compactor

Brovold Superpave Gyratory Compactor

The Brovold Superpave Gyratory Compactor is a proven, portable solution for compacting hot-mix asphalt specimens to Superpave mix design requirements. Manufactured by Pine Instruments, this unit is widely used for both mix design and QC/QA testing.

Its lightweight, self-contained design makes it ideal for remote job sites and mobile laboratories. Despite its portability, it delivers highly accurate and repeatable compaction results.

You can explore more options in
Asphalt Compaction Testing Equipment.

Simple, Automated Operation

The compactor is controlled by an industrial-grade computer that manages the full compaction cycle. Operation is straightforward and efficient.

The process includes:

• Entering compaction parameters through a menu-driven controller
• Placing the prepared mold into the machine
• Securing the gyratory head and starting the cycle

Once started, the system applies vertical pressure using a hydraulic actuator. It then induces the programmed gyratory angle and rotates the mold at controlled speed and force.

Gyratory Compaction Principle

During operation, the mold rotates around a fixed axis at a set angle. This motion creates a conical surface of revolution, simulating real-world pavement compaction.

At the end of the cycle, the specimen is automatically extruded using the same hydraulic ram. This eliminates manual handling of hot, heavy molds and improves operator safety.

Finished specimens can be used immediately or transferred to
Asphalt Sample Preparation Equipment for further testing.

Accurate Data Logging & Control

The Brovold Gyratory Compactor includes an advanced data acquisition and logging system designed by Pine Instruments.

Key data features include:

• Real-time display of height, pressure, and force
• Integrated load cell for continuous force measurement
• Storage of up to 10 completed tests in internal memory
• USB ports, RS-232 serial output, and optional laser printer support

Test data can be viewed live on the four-line digital display or exported via USB.

Adjustable Parameters & Standards Compliance

Default settings meet all required parameters for:

• Number of gyrations
• Specimen height
• Compaction force
• Gyration speed

These defaults comply with ASTM and AASHTO standards, but all parameters can be adjusted for special materials or research applications.

Standard gyratory angles include:

• 1.16° internal
• 1.25° external
• Optional 0.82° internal (factory set upon request)

Key Features

• Meets ASTM D6925 and AASHTO T 312 requirements
• Highly portable 137 kg (304 lb) design
• Suitable for mix design and QC/QA testing
• Built-in hydraulic specimen extruder
• Rigid tubular frame for stability
• Patented gyratory mechanism for repeatability

Included Items

• Brovold Superpave Gyratory Compactor
• Funnel cap for sample placement
• Tongs
• Magnetic end plate lifter

Molds and accessories are available separately for different test standards.

Technical Specifications (Summary)

• Gyrations: 0–299
• Speed: 20–40 gpm (30 gpm factory set)
• Compaction Force: 300–600 kPa
• Specimen Height: 10–200 mm
• Power: 115V / 60Hz or 230V / 50–60Hz
• Weight: 304 lb (138 kg)

Compaction in Asphalt Testing

Compaction reduces air voids and increases material density. In asphalt testing, gyratory compactors simulate field conditions to ensure durability and performance.

The Brovold Gyratory Compactor combines static compression and shear action to produce uniform, reliable specimens. This makes it an essential tool for modern asphalt laboratories.

For related tools, browse
Superpave Asphalt Testing Equipment