IS:9799- 1981 1. SCOPE 1.1 This standard covers the requirements of the pressure meter used for the determination of air content of freshly mixed concrete. 2. PARTS AND ACCESSORIES 2.1 The meter shall consist of a measuring howl with a conical cover assembly and other accessories ( see 2.2 to 2.7 )
The standard test methods ASTM C231 and AASHTO T 152 explain how to test concrete in pressure-type concrete air meters, and describes concrete air meter calibration in detail.The published calibration procedures seem complicated and intimidating at first glance; however, for meaningful results, they must be followed to the letter
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Get PriceA Type B pressure meter is used to determine the air content of normal-weight concrete. The air content is read at the dial, which is calibrated for each apparatus. The aggregate correction factor (explained in ASTM C 231) must be subtracted from your reading to obtain the net air content
Get Price3. Standard Pressure for Commercial Manifolds The standard delivery pressure for commercial multi-meter manifolds is 2 psi (4 oz was standard prior to January 2010). 202 Elevated Delivery Pressures 1. One (1), Two (2), or Three (3) psig [Elevated Pressure] Available to commercial and industrial Customers on a case by case basis in
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