Pyknometer

Pyknometer – Specific Gravity of Sand and Fine Aggregate

The Pyknometer is an essential laboratory instrument used to determine the specific gravity and water absorption of fine aggregates such as sand, powders, and fine-grained soils. This method is widely used in civil engineering, materials testing, and geotechnical laboratories for evaluating the physical characteristics of construction materials. By measuring the density or specific gravity, engineers can accurately assess material properties like porosity, void content, and moisture retention, crucial for concrete mix designs and soil analysis.

The Pyknometer comprises a high-quality glass jar fitted with a non-corrodible aluminum cone and rubber seal, ensuring a secure and leak-free seal during testing. The device is stable, easy to handle, and complies with ASTM C128 standards, making it ideal for precise, repeatable measurements.

Key Features of the Pyknometer

Precise Specific Gravity Measurement: Accurately determines the density of fine aggregates and powders.

Durable Construction: Supplied with a glass jar and a non-corrodible aluminum cone for long-term lab use.

Leak-Proof Seal: Equipped with a rubber seal to ensure airtight measurements.

Stable Design: Conical shape with a flat base provides maximum stability during the test procedure.

Easy Handling: Lightweight design allows for convenient and safe laboratory use.

Applications of the Pyknometer

Civil Engineering Labs: For quality control of construction materials like fine aggregates and sands.

Soil Mechanics: To determine the void ratio, degree of saturation, and porosity of fine-grained soils.

Minerals Testing: Measures the specific gravity of various powdered minerals and chemical substances.

Educational Use: Demonstrates the principles of density, volume, and water displacement in civil and materials science labs.