5.3. Empirical Formula for the Tens

5.3. Empirical Formula for the Tensile Modulus of Mortars in This Study
Considering that the Young’s modulus of coarse aggregate and air content of concrete are age-independent, the Young’s modulus of concrete at early age may be predicted if the modulus of mortar can be estimated appropriately. For the mortar studied in this work, empirical correlations between the experimental measurement modulus, the W/C, and the age of mortars are established as presented in Figure 14. The figure shows a linear correlation between the inverse water to cement ratio (C/W) and the tensile moduli of mortar (