Fig. 3

Correlation between the tensile strength (\({\varvec{f}}_{{\varvec{t}}}\)) and the compressive strength (\({\varvec{f}}_{{\varvec{c}}}\)).
Correlation between the tensile strength (\({\varvec{f}}_{{\varvec{t}}}\)) and the compressive strength (\({\varvec{f}}_{{\varvec{c}}}\)).