![When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500×10-6 is recorded. If this load is allowed to stand for a long time](https://www.gkseries.com/blog/wp-content/uploads/2023/08/When-a-specimen-of-M25-concrete-is-loaded-to-a-stress-level-of-12.5-MPa-a-strain-of-500×10-6-is-recorded.-If-this-load-is-allowed-to-stand-for-a-long-time.jpg)
Q. When a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500×10-6 is recorded. If this load is allowed to stand for a long time, the strain increases to 1000×10-6. In accordance with the provisions of IS:456-2000, considering the long-term effects, the effective modulus of elasticity of the concrete (in MPa) is
Solution:
Short term strain =500×10−6
Long term strain =1000×10−6
So, creep coefficient,
![](https://www.gkseries.com/blog/wp-content/uploads/2023/08/Screenshot-466.png)