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For ready mix, lower concrete grades of 20 MPa, and higher concrete grades of around …
For denser, higher weight, hollow or solid, load bearing concrete blocks, their maximum …
Concrete's compressive strength requirements can vary from 2500 psi …
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.