What Is an Aggregate Crushing Value Test Set?

The Aggregate Crushing Value Test Set determines the resistance of aggregates to crushing under a gradually applied compressive load. The test produces the Aggregate Crushing Value, or ACV, which provides a numerical indication of aggregate mechanical strength.

Aggregate strength is important in road construction, concrete production and other applications where particles are subjected to repeated mechanical loads. A lower ACV generally indicates greater resistance to crushing.

Ø75 mm and Ø150 mm Models

LİYA Test offers two different configurations.

The LT-A0064 model uses a Ø75 mm test assembly and is intended for smaller aggregate fractions. Its overall dimensions are 120 × 120 × 350 mm, and the complete unit weighs approximately 8.5 kg.

The LT-A0065 model uses the standard Ø150 mm configuration. Its dimensions are 250 × 250 × 600 mm, with an approximate weight of 32 kg.

This model range allows laboratories to select the apparatus according to aggregate particle size and the applicable test procedure.

Complete Aggregate Crushing Test Assembly

Each test set consists of a steel cylinder, plunger, base plate, cylindrical measure and tamping rod.

The steel cylinder contains the prepared aggregate sample during loading. The plunger transfers the compressive force evenly onto the material.

The base plate supports the cylinder and maintains a stable test arrangement. The cylindrical measure helps prepare a consistent sample quantity, while the tamping rod allows the aggregate to be placed in a repeatable manner.

How Is the Aggregate Crushing Value Test Performed?

First, the operator prepares the aggregate fraction required by the applicable method.

The sample is placed into the cylindrical measure and then transferred to the test cylinder in controlled layers. Each layer is compacted with the appropriate tamping rod.

The plunger is positioned on top of the aggregate. A compression testing machine then applies the required load progressively.

After loading, the crushed aggregate is removed and sieved through the specified test sieve.

The mass of material passing through the sieve is compared with the original specimen mass. The resulting percentage is reported as the Aggregate Crushing Value.

Evaluation of ACV Results

A lower ACV indicates that the aggregate resisted the applied crushing load more effectively. A higher value indicates greater particle breakdown.

The laboratory should compare results obtained from materials prepared and tested under the same conditions.

Aggregate Crushing Value should also be considered together with other properties such as abrasion resistance, fragmentation resistance, particle density and water absorption when evaluating overall material performance.

BS 812-110 and BS 812-111 Testing

BS 812-110 describes the determination of the Aggregate Crushing Value for aggregates subjected to a gradually applied compressive load.

Where materials require an alternative strength assessment, BS 812-111 describes the Ten Percent Fines Value procedure.

The Aggregate Crushing Value Test Set combines rigid steel components, complete sample preparation accessories and two size options. It therefore provides a practical solution for repeatable aggregate strength testing in quality-control and research laboratories.