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| Q. |
Which of the following statement is correct? |
| A. | Duff Abram's law is valid only when the concrete is of workable plasticity. |
| B. | If the water-cement ratio is less, the strength of concrete will be less. |
| C. | The strength of concrete decreases with age. |
| D. | A rich mix of concrete provides low strength than a lean mix. |
| Answer» A. Duff Abram's law is valid only when the concrete is of workable plasticity. | |
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