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CHASE AIR INDICATOR AZA1105
AZA1105 Chase Air Indicator is a compact, lightweight, and highly practical field instrument designed to measure the air content in freshly mixed concrete. It is widely used in construction sites where rapid quality decisions are required and laboratory testing equipment is not readily available.
This device serves as a reliable field alternative to standard air content methods such as ASTM C231 (Pressure Method) and ASTM C173 (Volumetric Method). While it is not intended to replace laboratory-grade instruments, it provides fast, useful guidance that helps engineers and site supervisors maintain proper concrete mix quality.
Air entrainment plays a critical role in concrete durability, especially in regions exposed to freeze–thaw cycles, and contributes significantly to workability and pumpability of concrete. AZA1105 helps ensure that air content remains within the recommended range (typically 4%–7%), reducing the risk of weak or brittle concrete.
The working principle is based on fluid displacement and vacuum pressure balance. A representative mortar sample is collected and placed inside the testing chamber, where a controlled vacuum is applied. The internal pressure difference is translated directly to a calibrated dial gauge showing the approximate air content percentage.
With no electrical components, moving mechanical assemblies, or complex maintenance requirements, the AZA1105 is extremely reliable and built for tough field conditions. Its rugged body and easy-to-read dial make it suitable for continuous daily use in real-world jobsite environments.
Description
Key Features
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Measures air content in freshly mixed concrete
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Lightweight and portable for field applications
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Simple manual operation using vacuum and fluid displacement
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No electricity or batteries required
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Easy-to-read calibrated dial indicator
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Rugged, chemical-resistant body
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Fast results within minutes
Applications
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Road and highway construction projects
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Ready-mix concrete quality checks
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Pavement and slab works
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Precast concrete yards
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Remote and rural construction sites
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On-site mix design verification
Operating Principle
The test is conducted by:
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Collecting the mortar portion of fresh concrete
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Placing the sample into the chamber
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Adding the testing fluid
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Creating a vacuum using the manual pump/valve
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Reading the air content directly from the dial
This process provides a quick estimate of the air percentage, enabling immediate jobsite adjustments.
Technical Specifications
| Feature | Specification |
|---|---|
| Model | AZA1105 |
| Measuring Range | 0% – 10% air content |
| Readout | Analog dial gauge (direct %) |
| Operation Type | Fully manual |
| Power Requirement | None |
| Materials Tested | Fresh concrete mortar |
| Body Material | Chemical-resistant plastic / corrosion-resistant alloy |
| Accessories | Sampling tube, fluid container, protective case |
| Portability | Handheld & lightweight |
FAQs
Q1: What does AZA1105 measure?
It measures the approximate air content in freshly mixed concrete.
Q2: Is it a replacement for ASTM C231?
No, it provides a reliable field estimate but does not replace pressure meters for official certifications.
Q3: Is calibration needed?
It is factory calibrated but can be checked periodically with control samples.
Q4: Is it suitable for coarse aggregates?
No, it is designed for the mortar (fine aggregate) portion only.
Q5: Who typically uses this device?
Contractors, site engineers, supervisors, QC teams, and field technicians.
Additional information
| Measuring Range |
0% to 10% air content |
|---|---|
| Readout |
Dial gauge (direct % air content) |
| Operation Type |
Manual (no battery or power required) |
| Compliance |
Field alternative to ASTM C173 |
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