Design of experiments (DoE) is a methodology used to evaluate the effect of the
main factors and their interactions on a certain property [21]. In this paper, a factorial
design 2k (k represents the number of factors involved, i.e., water and SAP) was
particularly used to adjust the basic formulation of mortars, named experimental
plan 1 (Table 2). The statistical significance of this test and the validation of models
were carried out by analysis of variance (ANOVA)