NBN EN 12504-4 : 2004
Current
The latest, up-to-date edition.
TESTING CONCRETE - PART 4: DETERMINATION OF ULTRASONIC PULSE VELOCITY
12-01-2013
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Method
5 Apparatus
5.1 General
5.2 Performance requirements
5.3 Transducers
5.4 Apparatus for determination of arrival time of the pulse
6 Procedures
6.1 Determination of Pulse Velocity
7 Expression of result
8 Test report
9 Precision
Annex A (informative) Determination of pulse velocity
- indirect transmission
Annex B (informative) Factors influencing pulse velocity
measurements
B.1 General
B.2 Moisture content
B.3 Temperature of the concrete
B.4 Path length
B.5 Shape and size of specimen
B.6 Effect of reinforcing bars
B.7 Cracks and voids
Annex C (informative) Correlation of pulse velocity and
strength
C.1 General
C.2 Correlation using moulded specimens
C.3 Correlation by tests on cores
C.4 Correlation with the strength of precast units
Bibliography
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