MEASUREMENT Of ULTRASONIC PULSE VELOCITY IN CONCRETE FOR ASSESSING COMPRESSIVE STRENGTH
Abstract
Evaluating in- place compressive strength of concrete by employing non-destructive testing method is a cardinal approach to
assess concrete strength in present condition. But strength cannot be measured because non-destructive tests are relative in
nature. So indispensability arises for establishing experimental relation between the property being measured by a given test
and the strength of the specimen. Concrete strength increases with time due to curing but when its use being started,
environmental exposure may also deteriorate its strength. To assess the concrete strength in present condition of a structure
ultrasonic pulse velocity method is used among all other non-destructive methods in order to find a correlation with concrete
compressive strength. Therefore. to derive such correlation and evaluating its reliability using local material and local condition
is important for judging the concrete. Finally, further observations are made on effect of concrete age and coarse aggregate
which are known to be the most important parameters that affect the correlation.
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References
Accuracy of Physical Properties:' Concrete NDTCE'09,
Nantes, 30 June-3 July, 2009.
[2] HANDBOOK ON NONDESTRUCTIVE TESTING OF
CONCRETE, Chapter 8.The Ultrasonic Pulse Velocity Method
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