000009277 001__ 9277
000009277 005__ 20141204092424.0
000009277 04107 $$aeng
000009277 046__ $$k12/05/2014
000009277 100__ $$aNežerka, V.
000009277 24500 $$aMicromechanics-based models of cocciopesto mortars

000009277 24630 $$n18.$$pEngineering Mechanics 2012
000009277 260__ $$bInstitute of Theoretical and Applied Mechanics, AS CR, Prague
000009277 506__ $$arestricted
000009277 520__ $$2eng$$aThe paper deals with homogenization and strength estimation of mortars containing crushed bricks or other clay products. These mortars, known as cocciopesto, were used mainly during the Byzantine period and by Romans. Cocciopesto exhibit quite extraordinary mechanical properties due to formation of C-S-H gel coating on the interface between lime matrix and crushed clay products. Based on literature study, it seems that no one has ever tried to estimate the properties of cocciopesto mortars using micromechanical modeling. The micromechanical approach and Mori-Tanaka homogenization technique provided an explanation for the characteristic behavior of these mortars, but they had to be modified for homogenization of coated particles. Mortar strength was estimated from magnitudes of the quadratic average of deviatoric strain in individual phases. The calculations confirmed the important role of the C-S-H gel coating on the mortar strength and stiffness. Despite the above mentioned simplifications and a few uncertainties, the model seems to be able to correctly predict the trends and serve for an optimization of the mortar composition towards desired properties.

000009277 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009277 653__ $$acocciopesto, micromechanics, Mori-Tanaka method, C-S-H gel coating, strength estimation

000009277 7112_ $$aEngineering Mechanics 2012$$cSvratka (CZ)$$d12/05/2014 - 15/05/2014$$gEM2012
000009277 720__ $$aNežerka, V.$$iSomr, M.$$iZeman, J.
000009277 8560_ $$ffischerc@itam.cas.cz
000009277 8564_ $$s944006$$uhttps://invenio.itam.cas.cz/record/9277/files/261_Nezerka_V-FT.pdf$$yOriginal version of the author's contribution as presented on CD, paper (No. 261).
000009277 962__ $$r8924
000009277 980__ $$aPAPER