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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Register for a trial account. No other resonant frequency system includes an oscilloscope despite being strongly recommended in ASTM C paragraph 4. No other units of measurement are included in this standard. Features of the HT Unit: Click to View the GrindoSonic Brochure.
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Today, some 12, ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. The difference depends, in part, on the strength level of the concrete. C Rapid Freeze-Thaw Apparatus.
The original PCA design has been modified by changing to solid state circuitry and addition of a built-in cathode ray oscilloscope. ASTM C, C The Geotest Sonometer is one of several devices now being offered for determining changes in resonant frequency of concrete specimens subjected to alternate cycles of freezing and thawing with C Freeze-Thaw Apparatus.
The oscilloscope confirms that peak reading on meter is actual resonance and not a harmonic. Our extensive inventory is yet another way to keep you satisfied. A very detailed instruction manual accompanies each sonometer. This test method is intended primarily for detecting significant changes in the dynamic modulus of elasticity ast laboratory or field test specimens that are undergoing exposure to weathering or other types of potentially deteriorating influences.
ASTM C, Test equipment Controls
Search book title Enter keywords for book title search. When resonance occurs, the actual number is digitally displayed on the frequency counter.
All other units use accelerometers which require intimate contact with the test specimen.
Complete refund or credit will be issued for unused and unmarked items returned within 10 days of receipt. The Geotest Sonometer is the only system using a phono type cartridge as a pickup. Product knowledge and commitment to customer service guarantees that your order is processed the same day you place it.
ASTM C215 – 14
Significance and Use This test 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. Resonant frequency can be determined by watching the voltmeter reach its highest point.
Changing accelerometer positions on the test specimen is time consuming. Copyright Compu-tecture, Inc. F Standard Specification for Driven Fasteners: Other systems offer an oscilloscope connection. See 4 more pictures. Click here to download full list of books. Please login to your authorized staff account to use this feature.
E-Meter for Flexural Resonance of Concrete
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. The conditions of manufacture, the moisture content, and other characteristics of the test specimens see section on Test Specimens materially influence the results obtained.
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