Micromechanics-Based Models of Cocciopesto Mortars

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F12%3A00193951" target="_blank" >RIV/68407700:21110/12:00193951 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.engmech.cz/2012/proceedings/pdf/261_Nezerka_V-FT.pdf" target="_blank" >http://www.engmech.cz/2012/proceedings/pdf/261_Nezerka_V-FT.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Micromechanics-Based Models of Cocciopesto Mortars

Popis výsledku v původním jazyce

The 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.

Název v anglickém jazyce

Micromechanics-Based Models of Cocciopesto Mortars

Popis výsledku anglicky

The 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.

Druh

D - Stať ve sborníku

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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Projekt

<a href="/cs/project/DF11P01OVV008" target="_blank" >DF11P01OVV008: Vysokohodnotné a kompatibilní vápenné malty pro extrémní aplikaci při restaurování, opravách a preventivní údržbě architektonického dědictví</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Engineering Mechanics 2012

ISBN

978-80-86246-40-6

ISSN

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e-ISSN

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Počet stran výsledku

12

Strana od-do

933-944

Název nakladatele

Institute of Theoretical and Applied Mechanics Academy of Sciences of the Czech Republic

Místo vydání

Prague

Místo konání akce

Svratka

Datum konání akce

14. 5. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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