Vacuum Pycnometer Set for Maximum Specific Gravity (Gmm) Testing

The CANTROL Vacuum Pycnometer Set is a high-precision laboratory instrument engineered to determine the maximum theoretical specific gravity (Gmm) of uncompacted bituminous paving mixtures. Often referred to as the “Rice Test,” this procedure is a cornerstone of asphalt quality control, providing the essential data needed to calculate air voids in compacted samples and ensure pavement durability.

Durable Design and High Capacity

Constructed for the rigorous environment of a materials testing lab, this set features a 2000 ml capacity container crafted from a robust combination of aluminum and plexiglass. The aluminum base provides exceptional structural integrity under high vacuum pressure, while the plexiglass lid allows technicians to clearly monitor the de-airing process. The airtight seal ensures a consistent vacuum, which is critical for removing entrapped air from the asphalt mixture to achieve repeatable and accurate results.

Technical Accuracy and Compliance

Precision is non-negotiable in civil engineering. The CANTROL Vacuum Pycnometer is designed to facilitate full compliance with international testing standards, including ASTM D2041 and AASHTO T 209. Its design minimizes sample loss and streamlines the saturation process, making it an efficient choice for both field laboratories and permanent research facilities.

Optimized Workflow for the “Rice Test”

When paired with a vacuum pump and a vibrating table (such as the Rice Testing Shaker), this pycnometer set significantly reduces the manual labor involved in specimen agitation. The large 2000 ml volume is ideal for standard asphalt sample sizes, ensuring that the mixture is fully submerged and agitated effectively to release all air bubbles.

Key Features:

• Capacity: 2000 ml for standard laboratory sample sizes.

• Material: Heavy-duty aluminum bowl with a transparent plexiglass lid.

• Vacuum Integrity: Precision-engineered gaskets for a leak-proof seal.

• Versatility: Essential for asphalt mix design, density testing, and air void calculation.

• Standard-Ready: Built for ASTM D2041 and AASHTO T 209 methodologies.

Comparison Table