What does Fe in concrete mean?
could be iron rod reinforced concrete, as Fe stands for Iron on the period stable of elements.
The term slump used in concrete means the thickness or thinness of the concrete. The slump is measured by filling a 12" cylinder up with concrete, then flipping it over and pulling the cylinder up. The distance the concrete "slumps" down from the top of the cylinder is the slump for that concrete. For example, if the concrete falls 6" from the top of the cylinder, that concrete is on a 6" slump.
No, concrete does not mean honest. As an adjective : Concrete means that which is not abstract nor imaginary but capable of being perceived by the senses. As noun: Concrete is a strong hard building material composed of sand and gravel and cement and water. Honest (adj) means being truthful, not disposed to cheat or defraud; not deceptive or fraudulent.