ASTM C215 − 14 Standard Test Method for Fundamental Transverse Longitudinal and Torsional Resonant Frequencies of Concrete Specimens

ASTM C215 − 14 Standard Test Method for Fundamental Transverse Longitudinal and Torsional Resonant Frequencies of Concrete Specimens

1.1 This test method covers measurement of the fundamental transverse, longitudinal, and torsional resonant frequencies of concrete prisms and cylinders for the purpose of calculating dynamic Young’s modulus of elasticity, the dynamic modulus of rigidity (sometimes designated as “the modulus of elasticity in shear”), and dynamic Poisson’s ratio.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use.

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.

Significance and Use of ASTM C215 − 14 Standard Test Method for Fundamental Transverse Longitudinal and Torsional Resonant Frequencies of Concrete Specimens

5.1 This test method is intended primarily for detecting 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.

The test method may also be used to monitor the development of dynamic elastic modulus with increasing maturity of test specimens.