Engineering :: Concrete Technology

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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: Option A