ASTM C597 FREE DOWNLOAD

Not all forms of deterioration or damage actually change the pulse velocity of the material, but they affect the actual path for the pulse to travel from transmitter to receiver. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. If circumstances warrant, a velocity-strength or velocity-modulus relationship may be established by the determination of pulse velocity and compressive strength or modulus of elasticity on a number of specimens of a concrete. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phone , fax , or service astm. For longer path lengths through sound concrete, attenuation of the signal will decrease the absolute repeatability of the transit-time measurement, but the longer transit time involved will result in a calculation of velocity having the same order of accuracy. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

Uploader:	Dairan
Date Added:	27 January 2011
File Size:	16.75 Mb
Operating Systems:	Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X
Downloads:	49028
Price:	Free* [*Free Regsitration Required]

Individual reprints single or multiple astj of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. X597 test method does not apply to the propagation of other types of stress waves through concrete. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. The maximum path length is obtained by using transducers of relatively low resonant frequencies 20 to 30 kHz to minimize the attenuation of the signal in the concrete.

In addition, the pulse velocity in saturated concrete is less sensitive to changes in its relative quality. Presently available test equipment limits path lengths to approximately mm minimum and m maximum, depending, in part, upon the frequency and intensity of the generated astmm. Precision and Bias For longer path lengths through sound concrete, asttm of the signal will decrease the absolute repeatability of the transit-time measurement, ast the longer transit time involved will result in a calculation of velocity having the same order of accuracy.

The shape can be viewed by means of outputs to an oscilloscope or digitized display inherent in the device. Their influence on transit time measurements will be affected by their orientation relative to the pulse travel path.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Approved December 15, Historical Version s - view previous versions of standard. It is expected that the repeatability with digital display devices will be better than stated as follows. Proper coupling can be verified by viewing the shape and magnitude of the received waveform.

This relationship may serve as a basis for the estimation of strength or modulus of elasticity by further pulse-velocity tests on that concrete.

Sufficient coupling agent and pressure must be applied to the transducers to ensure stable transit times.

Standard - Standard Test Method for Pulse Velocity Through Concrete ASTM C

The wavelength of the vibrations equals the pulse velocity divided by the frequency of vibrations. Attenuation is affected by the nature of the deterio- ration and the resonant frequency of the transducers. If possible, avoid measurements close to steel parallel to the direction of pulse propagation. The longitudinal resonance method in Test Method C is recommended for determining the dynamic modulus of elasticity of test specimens obtained from field concrete because Poisson's ratio does not have to be known.

ASTM C - 09 Standard Test Method for Pulse Velocity Through Concrete

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Refer to ACI For example, load-induced cracking will increase the true path length of the pulse and thus increase the measured pulse transit time. The true path length cannot be measured.

The resonant frequency of the transducer assembly determines the frequency of vibration in the concrete. No further reproductions authorized.

In such cases, however, 5 Chung, H. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

The waveform should have a decaying sinusoidal shape. No other units of measurement are included in this standard.

ASTM C597-09 Pulse Velocity Through Concrete

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. It is also applicable to indicate changes in the properties of concrete, and in the survey of structures, to estimate the severity of deterioration or cracking. Many forms of cracking and deterioration are directional in nature.

Link to Active This link will always route to x597 current Active version of the standard. If circumstances warrant, a velocity-strength or velocity-modulus relationship may be established by the determination of pulse velocity and compressive strength or modulus of elasticity on c579 number of specimens of a concrete.