This PowerPoint presentation summarizes non-destructive testing methods for concrete. It defines non-destructive testing as testing concrete without damaging the actual structure. The advantages are avoiding waste, checking strength anywhere at any time, and testing both wet and dry samples quickly. Methods described include rebound hammer testing, pulse velocity testing, surface hardness testing, penetration techniques, vibration testing, radioactive/nuclear, magnetic/electrical, and acoustic/emission testing. Rebound hammer and pulse velocity testing are explained in more detail. In conclusion, non-destructive testing saves time and money while allowing flexible testing of concrete in various states.

1. A
POWERPOINT PRESENTATION
ON
NON-DESTRUCTIVE TESTING
PREPARED
BY
MR.NIKAM VILAS NAVNATH
LECTURER(M.I.T.DHANORE)
E-mail:-vilas5151@gmail.com

2. INTRODUCTION
• DEFINATION: Testing of concrete without
destructing or disturbing or damaging or
breaking actual structure of concrete member.

3. ADVANTAGES OF NDT
1) Wastage of material is avoided.
2) Strength of member can be checked at any
time , at any point.
3) Less time is required.
4) Strength of wetted as well as dried sample
can be tested.

4. METHODS OF NDT
• Rebound Hammer Test.
• Pulse velocity Test.
• Surface Hardness Test.
• Penetration & Pull out Technique.
• Dynamic or Vibration Test.
• Radioactive & Nuclear Method.
• Magnetic & Electrical Method.
• Acoustic & Emission Technique.

5. A) Schmidt’s Rebound Hammer Test.

6. Principle’s Rebound Hammer Test.

7. Actual Testing

8. How to Take Reading ?

9. But what is the Problem?

10. B) Pulse velocity Test.
• Principle:- Measurement of time of pulse to
travel through a concrete member.

11. Working of Pulse velocity Test

12. Actual model

13. How to Take Reading ?

15. Conclusion
• Time Saving Technique.
• Economy is achieved.
• Comfortable.
• Flexibility in state of material.

16. References
• Concrete technology by M.S SHETTY.
• Concrete technology by M.L. GAMBHIR.