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A simplified damage evolution relationship and deformation characteristics of a pozzolanic lime mortar when subjected to unloading-reloading cycles in the pre-peak region

Kaklis Konstantinos, Agioutantis Zacharias, Mavrigiannakis Stelios, Maravelaki Pagona

Πλήρης Εγγραφή


URI: http://purl.tuc.gr/dl/dias/FD1658BF-9874-41A8-9714-0BA17578A7DC
Έτος 2019
Τύπος Δημοσίευση σε Περιοδικό με Κριτές
Άδεια Χρήσης
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Βιβλιογραφική Αναφορά K. Kaklis, Z. Agioutantis, S. Mavrigiannakis and P. Maravelaki-Kalaitzaki, "A simplified damage evolution relationship and deformation characteristics of a pozzolanic lime mortar when subjected to unloading-reloading cycles in the pre-peak region," Frat. ed Integrita Strutt., vol. 13, no. 50, pp. 395-406, Oct. 2019. doi: 10.3221/IGF-ESIS.50.33 https://doi.org/10.3221/IGF-ESIS.50.33
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Περίληψη

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 prepeak region is related to damage that occurs in each specimen.

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