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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E-Meter for Flexural Resonance of Concrete

Click to order the GrindoSonic MK7 separately. The test method may also be used to monitor the development of dynamic elastic modulus with increasing maturity of test specimens. All claims must be made within 30 days of purchase.

You will not see our advertised products at a lower price or we will refund or credit the difference. Click to see GrindoSonic Accessories.

Proof of claim is required. Features of the HT Unit: Complete refund or credit will be issued for unused and unmarked items returned within 10 days of receipt.

Ultrasonic E-Meter MKII

When resonance occurs, the actual number is digitally displayed on the frequency counter. Electrical power is converted by the driver asrm mechanical vibrations and these vibrations are imparted to the specimen under test.

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Enter your personal account email address to request a password reset: The original PCA design has been modified by changing to solid state circuitry and addition of a built-in cathode ray oscilloscope. Our customer service representatives are fully trained.

USB memory stick connection Full spectrum astn storage. The oscilloscope verifies resonance because the meter alone also reaches high points on harmonics. Click to View the GrindoSonic Brochure.


Geotest Instrument Corporation S.

Satisfaction Guaranteed – If for any reason our products do not meet your expectations, return them. Other systems offer an oscilloscope connection. With the Geotest pickup and driver mounted on portable stands, it is not necessary to use a test bench, which is mandatory on other apparatus.

A very detailed instruction manual accompanies each sonometer. This item is part of the following categories: Resonant frequency can be determined by watching the voltmeter reach its highest point. The apparatus consists essentially of a driver and pickup circuit. Geotest Catalog Request Catalog. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but astk not provided as part of the standard.

FORMAT Single User Subscription Site License Subscription BOOKS All Books PACKAGES All Packages EDITION to PUBLISHER. Asttm Geotest Sonometer is the only system using a phono type cartridge as a pickup. The chassis measures 17x14x11″. Features of the MK7 Unit: Enter your account email address to request a password reset: C Rapid Freeze-Thaw Apparatus.

Resonance Test Gauge

Land Use and Development. 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. Different computed values for the dynamic modulus of elasticity may result c125 widely different resonant frequencies of specimens of different sizes and shapes of the same concrete.

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No items in cart. Search book title Enter keywords for book title search. No other units of measurement are included in this standard. Copyright Compu-tecture, Inc.


Resonance Test Gauge Resonance Test Gauge [GH]

Register for a trial account. Ast through our website. To us, complete customer satisfaction means: No other resonant frequency system includes an oscilloscope despite being strongly recommended in ASTM C paragraph 4.

See 4 more pictures. The difference depends, in part, on the strength level of the concrete. F Standard Specification for Driven Fasteners: This apparatus closely follows design parameters set up over 40 years ago by the Portland Cement Association research laboratories. If you like to setup a quick demo, let us know at support madcad. Ease of use measurement system Connection to an High Temperature oven is possible Trigger level adjustable Option: The conditions of manufacture, the moisture content, and other characteristics of the test specimens see section astj Test Specimens materially influence the results obtained.

Process control Number of programs 5 with controller unit B standard Grindosonic Number of Elevated segments 4 with B standard Grindosonic Optional: The actual frequency is displayed on a built-in digital counter.

The oscilloscope confirms that peak reading on meter is actual resonance and not a harmonic. 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: