The water absorption coefficients of samples are indicated in
the Fig. 12. In general, the minimum values of all SAP-containing
formulations remained below those of their respective SAP-free
mortars. ANOVA treatment of results of experimental plan 1
revealed a non-linear numerical variation of curvature, being satisfactorily
adjusted by a quadratic model (Fig. 12a). This means that
the influence of SAP particles was not constant and depended on