AGGREGATE IMPACT TESTER WITH BLOW COUNTER AZA0983

Description

Purpose of the Test

The AIV test measures the resistance of aggregates to sudden impact or shock loads. This is crucial for understanding how aggregates will perform under repeated traffic loads and heavy vehicle movement.

Lower AIV values indicate stronger and more durable aggregates suitable for:

• Highway roads

• Airport runways

• Industrial pavements

Working Principle

A prepared aggregate sample is placed inside a hardened steel cylindrical cup. A standard impact hammer (13.5–14 kg) is dropped freely from a height of 380 mm.

The built-in digital blow counter accurately records each strike. Standard testing involves 15 blows. After testing, the crushed material is sieved and the percentage of fines is used to calculate the Aggregate Impact Value (AIV %).

Included Components

• Cylindrical Steel Cup

• Impact Hammer

• Guide Rod Assembly

• Digital Blow Counter

• Heavy Cast-Iron Base Frame

Applications

• Highway and road material testing

• Civil engineering laboratories

• University and research institutions

• Asphalt and RMC plants

• Construction QA/QC departments

Technical Specifications

FAQ

Q1: What is this apparatus used for?
It is used to determine the Aggregate Impact Value (AIV) of coarse aggregates.

Q2: Why is the blow counter important?
It ensures accurate and consistent counting of hammer strikes during the test.

Q3: How many blows are applied in the test?
15 standard blows as per IS and BS standards.

Q4: Does it require frequent calibration?
Only the digital counter requires periodic checking; the mechanical parts are low maintenance.

Q5: Can this be used at construction sites?
Yes, it is suitable for both laboratory and field-level quality control.