Question

Referring to the graph below, what is the approximate value of strength of 50mm cube in MPa for gel-space ratio .8?

(a) 20

(b) 40

(c) 60

(d) 80

The question was posed to me in an interview.

This intriguing question originated from Gel Space Ratio topic in section Strength of Concrete of Concrete Technology

Answer 1

Correct option is (d) 80

For explanation I would say: It is clearly seen from the fig that the corresponding value of strength for gel space ratio .8.