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Air Content: Volumetric Method
ACI Technician Workbook CP-1 (13)
CALIBRATED CUPS
1 Calibrated Cup = 1 Percent Air
A calibrated cup is used when the water level falls below the neck on the air meter while running the test. If this happens, either the concrete contains a significant amount of air, or your apparatus has leaked during the test.
Add calibrated cups
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