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An Empirical Approach for Improving the Estimation of the Concrete Compressive Strength Considered the Effect of Age and Drilled Core Sample
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 Title & Authors
An Empirical Approach for Improving the Estimation of the Concrete Compressive Strength Considered the Effect of Age and Drilled Core Sample
Oh, Hongseob; Oh, Kwang-Chin;
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To evaluate the compressive strength of concrete, rebound test and ultra pulse velocity methods as well as core test were widely used. The predicted strength effected by age, maturity and degradation of concrete, is a slight difference between in-situ concrete strength. The compressive strength of standard cylinder specimens and core samples by obtained from drilling will have a difference since the concrete is disturbed during the drilling by machinery. And the rebound number and ultra pulse velocity are also changed according to the age and maturity of concrete that effected to the surface hardness and microscpic minuteness. The authors performed the experimental work to reflect the age and core effect to the results from NDE test. The test results considering on the core and age of concrete were compaired with the proposed equation to predict the compressive strength.
Age;Compressive strength;Core effect;NDE;Rebound test;Ultrasonic pulse velocity;
 Cited by
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