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

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• 作者：V. Nežerka ; ^{vaclav.nezerka@fsv.cvut.cz} ; ^{vaclav.nezerka@gmail.com} ; J. Zeman ^{zemanj@cml.fsv.cvut.cz} ; J. Němeček ^{jiri.nemecek@fsv.cvut.cz}
• 关键词：Micromechanics ; Stiffness ; Strength ; Fracture energy ; Mori&ndash ; Tanaka method ; Mortar ; Shrinkage cracking
• 刊名：Mechanics of Materials
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：105
• 期：Complete
• 页码：49-60
• 全文大小：2026 K
• 卷排序：105

文摘

Continuum micromechanics model for the simulation of uniaxial compressive and tensile tests on lime-based mortars was proposed. Incremental strain-controlled form of the Mori–Tanaka scheme, J2 yield criterion was employed in compression. The scheme must take into account shrinkage cracking among aggregates. Our predictions explain the advantages of compliant crushed brick fragments, often encountered in ancient mortars, over stiff sand particles.