Que. | Resonant frequency method is based on the assumption that : |
- A. strength of concrete increases with age
- B. richer mix give more stronger concrete
- C. resonant frequency is directly proportional ti square of the strength of concrete
- D. modulus of elasticity of concrete goes on decreasing as the concrete quality deteriorates due to weathering
Right Answer is :
✓ C. resonant frequency is directly proportional ti square of the strength of concrete