Rock
Aggregate
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General Items
AGGREGATE IMPACT TESTER WITH BLOW COUNTER AZA0983
The AZA0983 Aggregate Impact Tester with Digital Blow Counter is a precision-engineered laboratory apparatus used to determine the Aggregate Impact Value (AIV) of coarse aggregates. It is designed to evaluate the toughness and resistance of aggregates used in road pavements, highways, and structural concrete.
This equipment is manufactured for durability, accuracy, and long service life, and is fully compliant with IS:2386 (Part IV) and BS 812 standards.
Key Features
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Determines Aggregate Impact Value (AIV) for pavement materials
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Integrated digital blow counter for accurate strike counting
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Conforms to IS:2386 (Part IV) and BS 812
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Heavy-duty, vibration-resistant frame
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Cylindrical steel cup and standard impact hammer
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:
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Highway roads
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Airport runways
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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
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Cylindrical Steel Cup
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Impact Hammer
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Guide Rod Assembly
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Digital Blow Counter
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Heavy Cast-Iron Base Frame
Applications
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Highway and road material testing
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Civil engineering laboratories
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University and research institutions
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Asphalt and RMC plants
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Construction QA/QC departments
Technical Specifications
| Parameter | Details |
|---|---|
| Model No. | AZA0983 |
| Standard Compliance | IS:2386 (Part IV), BS 812 |
| Hammer Weight | 13.5 – 14 kg |
| Drop Height | 380 ± 5 mm |
| Blow Counter | Digital (LED Display) |
| Cup Material | Hardened Steel |
| Base Frame | Cast iron with anti-vibration mounts |
| Power Supply | 220V AC |
| Approx. Weight | 45–50 kg |
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.
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