Standard Test Method for Fundamental Transverse, Longitudinal, and Torsional Resonant Frequencies of Concrete Specimens. A non-destructive sonic method. Fundamental Transverse, Longitudinal, and Torsional Resonant Frequencies of Concrete Specimens. All the Controls products ASTM C standard. Enter now!.
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The oscilloscope confirms that peak reading on meter is actual resonance and not a harmonic. Electrical power is converted by the driver into mechanical vibrations and these vibrations are imparted to the specimen under test.
E Terminology for Nondestructive Examinations. Advanced Search Search Tips. This cc215 method is intended primarily for detecting significant changes in the dynamic modulus of elasticity of laboratory or field test specimens that are undergoing exposure to weathering or other types of potentially deteriorating influences.
Click here to download full list of books. To us, complete customer satisfaction means: Defective items will be either replaced or repaired. Enter your personal account email address to request a password reset: No items in cart. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
With the Astmm pickup and driver mounted on portable stands, it is not necessary to use a test bench, which is mandatory on other apparatus.
Remember me for one month. Ease of use measurement system Connection to an High Temperature oven is possible Trigger level adjustable Option: The oscilloscope verifies resonance because the meter alone also reaches high points on harmonics.
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Features of the MK7 Unit: Click to order the GrindoSonic MK7 separately. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Copyright Compu-tecture, Inc.
Our large selection of inventory lets us fill your order immediately and at a completion rate that is extremely high in our industry. To us, complete customer satisfaction means:. The Geotest Sonometer is the only system using a phono type cartridge as a pickup.
When resonance occurs, the actual number is digitally displayed on the frequency counter. The conditions of manufacture, the moisture content, and other characteristics of the test specimens see section on Test Specimens materially influence the results obtained.
C25 other units use accelerometers which require intimate contact with the test specimen. Frequency analysis FFT calculation for detections of multiple vibrations modes Selection of zones of interest by waveband filtering Oscilloscoop function for time domain analysis Graphic visualisation of frequency domain Technical Information: Different computed values for the dynamic modulus of elasticity may result from widely different resonant frequencies of specimens of different sizes and shapes of the same concrete.
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This allows for greater flexibility in testing. C Rapid Freeze-Thaw Apparatus. Even with customer service astn price protection at the top of our complete customer satisfaction list, we know you want more.
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