A simplified damage evolution relationship and deformation characteristics of a pozzolanic lime mortar when subjected to unloading-reloading cycles in the pre-peak regionA simplified damage evolution relationship and deformation characteristics of a pozzolanic lime mortar when subjected to unloading-reloading cycles in the pre-peak region Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2020-10-262019enTwo series of uniaxial and triaxial compression tests including unloading-reloading cycles were performed under different confining pressures, in order to study the stress-strain and the deformation behavior of a pozzolanic lime mortar subjected to cyclic loading. Each test included a cyclic loading sequence using five loops in the pre-peak region. The experimental results showed that the specimens exhibit a strain-softening behavior for uniaxial and low pressure triaxial tests and a strain-hardening behavior for higher triaxial compression tests. The mortar specimens subjected to triaxial compressive cyclic loading at higher confining pressures failed along a single or conjugate shear planes accompanied by considerable lateral expansion. The marked Young’s modulus degradation behavior in the prepeak region is related to damage that occurs in each specimen.http://creativecommons.org/licenses/by/4.0/Frattura ed Integrità Strutturale1350395-406Kaklis_et_al_Frat. ed Integrita Strutt._13(50)_2019.pdfChania [Greece]Library of TUC2020-10-23application/pdf1.1 MBfree Kaklis Konstantinos Κακλης Κωνσταντινος Agioutantis Zacharias Αγιουταντης Ζαχαριας Mavrigiannakis Stelios Μαυριγιαννακης Στελιος Maravelaki Pagona Μαραβελακη Παγωνα Gruppo Italiano Frattura Cyclic loading Damage evolution Plastic strain Pozzolanic lime mortar Young’s modulus degradation