AggPlus System for InstroTek CoreLok

The AggPlus system is an accessory package for the InstroTek CoreLok system that enables determination of aggregate specific gravity and absorption using a vacuum-saturation workflow. The procedure uses oven-dry aggregate and compares measurements obtained under saturated and unsaturated conditions to calculate bulk specific gravity, apparent specific gravity and absorption. This approach can shorten the time needed to obtain useful aggregate properties to less than 20 minutes. The included pycnometers and calculation software create a simple step-by-step process for laboratories that already operate the CoreLok system.

Key Features

• Supports aggregate specific gravity and absorption testing associated with ASTM D7370/D7370M when used with the compatible CoreLok system and the complete prescribed procedure.
• Uses vacuum saturation to obtain measurements needed for bulk and apparent aggregate specific gravity and absorption calculations.
• Can produce aggregate property results in less than 20 minutes, supporting faster laboratory turnaround.
• Provides dedicated pycnometers and AggSpec software that streamline the test setup and reduce manual calculation work.
• Works as an add-on to an existing compatible base system, allowing laboratories to expand capabilities without purchasing a second complete vacuum unit.
• Accommodates fine or coarse aggregate applications as described in the product listing.

Included Items

AggSpec calculation software; two AggPlus pycnometers with calibrated lids; neoprene sheet set; brush, needle syringe and spatula; 8oz spray bottle; 50cc syringe; and 1000mL low-form beaker with handle, per HMA export.

Lab Manager's Tip

Confirm base-system compatibility, calibrated pycnometer lids and oven-dry sample preparation before running a test. For ASTM D7370/D7370M, use the specified saturation, weighing and calculation sequence; this accessory kit does not replace the required CoreLok equipment.

Typical Applications

Fine and coarse aggregate specific gravity, aggregate absorption, asphalt mix-design inputs, aggregate QC and materials laboratory process improvement.