#### Compressive Strength of Concrete Cubes - Lab Test & Procedure

(1) All the cubes strength are within + 15% of average (2) From shifts 1, 2 and 3 all cubes strength are > 23 N/mm 2. (3) Average cubes strength of shift 1, 2 and 3 is 29.3 N/mm 2 which is > 29 N/mm 2. Foundation concrete is accepted as M25 grade.