Q. Which of the following statement is correct? (Solved)
1. Duff Abram's law is valid only when the concrete is of workable plasticity.
2. If the water-cement ratio is less, the strength of concrete will be less.
3. The strength of concrete decreases with age.
4. A rich mix of concrete provides low strength than a lean mix.
- a. Duff Abram's law is valid only when the concrete is of workable plasticity.