Testing fresh concrete - Air content. Pressure methods1 Scope This document describes two methods for determination of air content of compacted fresh concrete, made with normal weight or relatively dense aggregate and having a declared value of D of the coarsest fraction of aggregates actually used in the concrete (Dmax) not greater than 63 mm. The test is not suitable for concretes with slumps less than 10 mm according to EN 123502. Neither method is applicable to concretes made with lightweight

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Who is BS EN 61338-1-5 -  Microwave measurement of conductivity between conductor layer and dielectric substrate for

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This International Standard provides guidelines on the principles of operation and the selection and use of Doppler-based and echo correlation velocity meters for continuous-flow gauging

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