Coarse Aggregate Angularity Apparatus

The Coarse Aggregate Angularity Apparatus measures the uncompacted void content of coarse aggregate. The testing apparatus is recommended to evaluate aggregates for Hot-Mix Asphalt (HMA) pavement.

Gradation and void content data provide an indication of angularity, sphericity, and surface texture that can be related to permanent deformation and fatigue cracking of asphalt. Aggregate is allowed to free fall from the hopper into a cylindrical measure. Excess heaped aggregate is struck off using the included bar, the mass is measured, and void content is computed.

The hopper, stand, and measure is stainless steel and a locator pin and circle on the bottom plate of the stand make it easy to center the measure below the hopper.

Features:

• An accurate measure of uncompacted void content of coarse aggregate
• Meets AASHTO T 326
• Locator pin and circle offer centering of the measure below the hopper

Included Items:

• Coarse Aggregate Angularity Apparatus
• Stainless Measure
• Strike-off Bar
• Glass Plate for calibration

Accessories:

• SGA-95 Coarse Aggregate Void Content Stainless Measure is easily secured to Apparatus stand for measuring during testing
• SGA-94 Coarse Aggregate Void Content Glass Plate used in calibrating the stainless steel measure and available as replacement or additional plate
• TSA-163 Steel Material Handling Pan for use weighing and loading coarse aggregate
• SC-4 30qt Galvanized Iron Pan for collecting overflow content

Related blogs:

• What is Superpave? Understanding Performance-Based Asphalt
• Characteristics of Aggregates: Shape, Size & Specific Gravity