We observe that the amount of transported water is not directly related with total porosity and, consequently, it is not connected with the substrate total absorption rate; because water flow depends on the pores size and their interconnection, as bigger size pores increase capillary absorption tension, which facilitates water movement.
Este comportamiento diferenciado de morteros idénticos, en distintos sustrato, con las mismas condiciones de aplicación 2-3, ha sido observado en diversas investigaciones 31-33.