“Experimental Study of the Effect of Water-Cement Ratio on Compressive Strength, Abrasion Resistance, Porosity and Permeability of Nano Silica Concrete”. Frattura Ed Integrità Strutturale, vol. 12, no. 44, Mar. 2018, pp. 16-24, https://doi.org/10.3221/IGF-ESIS.44.02.