Question #2762
View All Questions

What is the compressive strength of 150 mm cube at 28 days ordinary concrete of grade M20?

A.
15 N/mm<sup>2</sup>
B.
20 N/mm<sup>2</sup>
C.
25 N/mm<sup>2</sup>
D.
30 N/mm<sup>2</sup>
Explanation

No explanation provided.