Question

Consider the following statements related to 'non-destructive testing' of concrete:
1. Indentation test is used to assess the quality of concrete.
2. The Resonant Frequency Method is based on a laboratory test.
3. Compressive strength of concrete is estimated through Pulse Velocity Measurement.
4. Dynamic Modulus of Elasticity is determined by a Sonometer Test.
5. Thickness of concrete can be estimated by in-situ Rebound Hammer Test.
Which of the above statements are correct?

• A. 1, 2 and 3 only
• B. 1, 2 and 5 only
• C. 1, 2, 3 and 4 only
• D. 1, 2, 3, 4 and 5

Answer 1

The correct option is C 1, 2, 3 and 4 only

Rebound hammer test gives indication about compressive strength of concrete.