Question

How many layers of concrete are placed to fill a slump cone?

(a) 5 layers

(b) 3 equal layers by volume

(c) 3 equal layers by height

(d) 5 layers by volume

Answer 1

Correct option is (b) 3 equal layers by volume

To elaborate: Fill the mold 12 inches high in the shape of the frustum of a cone that is 8 inches in diameter at the bottom and 4 inches in diameter at the top. Then fill it in three equal layers by volume, not by height.