Work Item
ASTM WK82351

New Test Method for Test Method for Non-Contact Measurement of Resonances of Concrete Cylinders

1. Scope

The proposed test method standard will establish best practices for measurement of transverse or longitudinal resonant modes of a concrete cylinder based on the sound of an impulsive stimulus. Attachment of sensors to the cylinder is not required. Strike locations and support conditions are prescribed that will repeatably produce an acoustic impact response which contains a dominant resonant mode. While the underlying principles of operation of the proposed test method are similar to what is described in ASTM C215, there are substantial differences. A non-mandatory appendix also describes approaches to estimating compressive strength based on measured resonances. While there are usage scenarios where such strength estimators are useful, they shall not be used as the sole basis for acceptance based on specified strength unless such use is permitted in building codes and regulations.


NDT; non-destructive testing; concrete compressive strength; Impulse Excitation; Modal Analysis; Impact Response; acoustic resonance; cylinder


For testing of cylinders, this test method serves a similar purpose as the test method described in C215 with the added advantage that attachment of sensors to the cylinder is not required. A simple impactor is sufficient, and common cellphones or other such computing devices have ample capability to support performance of the test in real time. As such, this test method is suitable for use in regions where there is little infrastructure for testing. The measured resonances can be used to estimate elastic modulus as described in C215 and E1876. Also, the measured resonances can used as inputs to a strength estimator. Such a strength estimator is useful for corroborating compression test results, informing the selection of cylinders, scheduling of compression testing, and facilitating efficient measurement of strength development through repeated testing of individual cylinders.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: C09.64

Committee: C09

Staff Manager: W Scott Orthey

Work Item Status

Date Initiated: 06-21-2022

Technical Contact: Neil Cox

Item: 000