The Strength of Masonry with Low Compressive Strength of Mortar

The article deals with a problem of determination the strength of masonry for low grade mortar. This situation can occur with fresh mortar or in historical massive buildings. Results of different equations according to several authors and standards were compared and expressed in graphs. Authors propose the minimum value of mortar strength being used in equation according to Eurocode 6 to obtain reasonable strength of masonry with so called “zero” mortar.