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An Air Entrainment Meter measures the percentage of entrained air in freshly mixed concrete — a critical parameter for concrete that must resist freeze-thaw cycles, improve workability, or meet specified air content limits. The test is performed by the pressure method per IS 1199:1959 (Method 6) and ASTM C231, using a sealed pressure vessel calibrated to indicate the air content directly on a pressure gauge. Entrained air content of 4–8% is specified for frost-resistant concrete in cold climates and high-altitude infrastructure projects. JS Civil Lab Solutions supplies IS 1199 and ASTM C231 compliant air entrainment meters with calibration certificate and AMC support across India. Call +91 93596 24761 for pricing.
An air entrainment meter — also called an air content meter or concrete air meter — is a laboratory and field instrument used to measure the percentage of entrained air voids in fresh concrete immediately after mixing. It operates on the pressure method, using Boyle’s Law (pressure-volume relationship of air) to determine air content without needing to measure concrete density.
Entrained air is intentionally introduced into concrete using chemical admixtures (air-entraining agents) to improve freeze-thaw resistance, workability, and durability in aggressive environments.
| Standard | Method |
|---|---|
| IS 1199:1959 (Method 6) | Measurement of air content of fresh concrete — pressure method |
| ASTM C231 | Air content of freshly mixed concrete by the pressure method |
| EN 12350-7 | Testing fresh concrete — air content — pressure methods |
| Parameter | Specification |
|---|---|
| Bowl Capacity | 7 litres (standard) / 5 litres |
| Measurement Range | 0 – 8% air content |
| Gauge | Glycerine-filled Bourdon tube, dual scale |
| Material | Aluminium alloy bowl, lid, and clamps |
| Includes | Bowl, lid, clamps, hand pump, calibration cylinder, tamping rod |
JS Civil Lab Solutions supplies air entrainment meters and fresh concrete testing equipment from Vasai (E), Maharashtra.
Call +91 93596 24761 or email [email protected] for pricing and availability.
IS, ASTM, ISO, BS & EN compliant instruments. NABL-aligned calibration certificates on request.
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