Premature damage of mortar and concrete structures, due to environmental action, demands
procedures to estimate durability of this type of components. Mortar or concrete composition
(eg grain size, type and percentage of sand) may have some influence in the durability, but it
is mainly related to porosity, which determines the interaction between aggressive agents
and material. In this work, several IDE ultrasonic methods to estimate porosity of mortar are
presented and evaluated. In these methods, porosity is related to (1) the material structural …