The formula for calculating compressive strength is as follows: Compressive Strength = Applied Maximum Load / Surface Area of the Specimen. For concrete blocks, the compressive strength is typically around 17.5 N/mm2 or 2500 psi.
For ready mix, lower concrete grades of 20 MPa, and higher concrete grades of around 40 and 45 MPa, the concrete compressive strength is well represented by a normal …
Compressive strength results and information from mix results indicate that cement content normally is low and at about 5% corresponding to 30-35 blocks made per 50 kg …