Micromechanics-based simulations of compressive and tensile testing on lime-based mortars

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00304656" target="_blank" >RIV/68407700:21110/17:00304656 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0167663616305348" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0167663616305348</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.mechmat.2016.11.011" target="_blank" >10.1016/j.mechmat.2016.11.011</a>

Result language
angličtina
Original language name
Micromechanics-based simulations of compressive and tensile testing on lime-based mortars
Original language description
The purpose of this paper is to propose a continuum micromechanics model for the simulation of uniaxial compressive and tensile tests on lime-based mortars, in order to predict their stiffness, compressive and tensile strengths, and tensile fracture energy. In tension, we adopt an incremental strain-controlled form of the Mori–Tanaka scheme with a damageable matrix phase, while a simple J<inf>2</inf> yield criterion is employed in compression. To reproduce the behavior of lime-based mortars correctly, the scheme must take into account shrinkage cracking among aggregates. This phenomenon is introduced into the model via penny-shaped cracks, whose density is estimated on the basis of particle size distribution combined with the results of finite element analyses of a single crack formation between two spherical inclusions. Our predictions show a good agreement with experimental data and explain the advantages of compliant crushed brick fragments, often encountered in ancient mortars, over stiff sand particles. The validated model provides a reliable tool for optimizing the composition of modern lime-based mortars with applications in conservation and restoration of architectural heritage.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20101 - Civil engineering

Project
<a href="/en/project/GA13-15175S" target="_blank" >GA13-15175S: Functionally graded fiber reinforced cementitious composite members</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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