TY - JOUR AU - Kaklis, Kostas AU - Agioutantis, Zach AU - Mavrigiannakis, Stelios AU - Maravelaki-Kalaitzaki, Pagona PY - 2019/09/02 Y2 - 2024/03/29 TI - A simplified damage evolution relationship and deformation character¬istics of a pozzolanic lime mortar when subjected to unloading-reloading cycles in the pre-peak region JF - Frattura ed Integrità Strutturale JA - Fra&IntStrut VL - 13 IS - 50 SE - SI: Research activities of the Greek Society of Experimental Mechanics of Materi DO - 10.3221/IGF-ESIS.50.33 UR - https://www.fracturae.com/index.php/fis/article/view/2608 SP - 395-406 AB - <p>Two 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 pre-peak region is related to damage that occurs in each specimen.</p> ER -