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AIR ENTRAINMENT METER AZA1146
Precision Instrument for Measuring Air Content in Fresh Concrete
The AZA1146 Air Entrainment Meter is an essential testing instrument used in concrete laboratories and construction quality-control environments to accurately determine the air content in freshly mixed concrete. Engineered by Azalab, this meter delivers reliable, repeatable, and standard-compliant measurements that support high-quality concrete production.
Purpose of Air Entrainment Testing
Entrained air is critical for:
- Freeze–thaw durability
- Crack resistance
- Improved workability
- Reduced bleeding and segregation
Insufficient air leads to surface scaling and cracking, while excessive air reduces compressive strength. The AZA1146 ensures fresh concrete meets required air-content specifications, typically between 4% and 8% depending on environmental and structural demands.
Description
Working Principle
The AZA1146 operates on the pressure method, as defined in ASTM C231 and AASHTO T152. Pressure is applied to a sealed, water-filled chamber containing the concrete sample. The resulting drop in pressure corresponds directly to the volume of entrained air in the concrete.
Design & Construction
Built for both field and laboratory use, the AZA1146 features:
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Rugged cast aluminum chamber
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Corrosion-resistant body for long service life
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Airtight lid with wing-nut or lever clamps
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High-precision 0–10% pressure gauge
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Manual air pump and petcocks for smooth operation
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Quick-release valves (available on select models)
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Shock-resistant gauge options for field durability
Models are available in 6-liter and 8-liter capacities.
Included Accessories
Every AZA1146 unit comes complete with:
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Calibration vessel
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Syringe
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Tamping rod
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Straightedge
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Rubber mallet
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Maintenance tools
All components are supplied for immediate use and on-site calibration.
Calibration
Calibration is fast and straightforward:
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Fill the bowl with water.
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Insert the calibration vessel to simulate a known air volume.
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Adjust gauge reading if necessary.
This ensures long-term accuracy and dependable field results.
Typical Applications
The AZA1146 is widely used in:
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Ready-mix concrete plant QC
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Pavement and structural concrete inspection
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Construction material testing laboratories
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Research and academic engineering labs
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Compliance testing for civil and infrastructure projects
In freeze–thaw regions, the AZA1146 is indispensable for verifying durability and performance.
Manufacturing Quality
All Azalab meters are manufactured under strict ISO-certified processes, including:
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Pressure leakage testing
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Gauge calibration
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Mechanical durability checks
This ensures outstanding performance, reliability, and a long service life even under harsh conditions.
Specifications
| Feature | Specification |
|---|---|
| Test Method | Pressure Method (ASTM C231) |
| Chamber Volume | 6 Liters / 8 Liters |
| Body Material | Cast Aluminum |
| Air Gauge Range | 0–10% |
| Pressure Application | Manual Air Pump |
| Accessories Included | Tamping Rod, Straightedge, Rubber Mallet |
| Calibration Equipment | Yes (Vessel, Syringe) |
| Suitable For | Field and Laboratory |
| Compliance | ASTM C231, AASHTO T152 |
FAQ – Frequently Asked Questions
Q1: What is the purpose of an Air Entrainment Meter?
It measures the entrained air in fresh concrete to ensure durability, freeze–thaw resistance, and compliance with mix design requirements.
Q2: Which standards does this model comply with?
The AZA1146 complies with ASTM C231 and AASHTO T152.
Q3: Can it be used at construction sites?
Yes. Its rugged, corrosion-resistant design makes it suitable for both field and lab use.
Q4: What is the recommended air content for concrete?
Typically 4%–8%, depending on climate conditions and project specifications.
Q5: How do I calibrate the instrument?
Using the supplied calibration vessel and water volume to simulate known air content, followed by gauge adjustment if needed.
Additional information
| Test Method |
Pressure Method (ASTM C231) |
|---|---|
| Chamber Volume |
6 Liters / 8 Liters |
| Body Material |
Cast Aluminum |
| Air Gauge Range |
0–10% Air Content |
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