Characterization of pozzolanic lime mortars used as filling material in shaped grooves for restoring member connections in ancient monumentsCharacterization of pozzolanic lime mortars used as filling material in shaped grooves for restoring member connections in ancient monuments Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2019-10-072017enThis article presents a set of mechanical characteristics for a pozzolanic mortar consisting of hydrated lime and metakaolin, which is used as filler between metallic connectors and marble blocks during restoration activities of ancient monuments in Greece. Mechanical properties include the uniaxial and triaxial compressive strength, the indirect tensile strength, the bending strength, the elastic modulus and Poisson’s ratio, and a shear failure criterion. Cored cylindrical specimens are used for determining the uniaxial and triaxial compressive behavior and the indirect tensile strength of the mortar, thus ensuring the repeatability of the experimental results. The triaxial tests indicated a plastic behavior of the mortars under study, enabling them to perform well in conditions of high shear forces. Calcite and hydraulic components formed in the setting procedure contributed to the plasticity of the final mortar. The mechanical properties that were developed can be utilized to model material behavior and failure under conditions of confined or triaxial loading. The development of a shear failure criterion for a pozzolanic mortar is a substantial accomplishment that has not been previously reported in the international literature.http://creativecommons.org/licenses/by/4.0/International Journal of Architectural Heritage12175-90 Kaklis Konstantinos Κακλης Κωνσταντινος Mavrigiannakis Stelios Μαυριγιαννακης Στελιος Agioutantis Zacharias Αγιουταντης Ζαχαριας Maravelaki Pagona Μαραβελακη Παγωνα Taylor & Francis Indirect tensile strength Pozzolanic mortars Shear strength Triaxial compressive strength Uniaxial compressive strength