Influence of Aggregate Stiffness on Fracture-Mechanical Properties of Lime-Based Mortars

Abstract:

Addition of relatively stiff aggregates into lime-based mortars is responsible for an increase of the effective mortar stiffness and stress concentrations around aggregates during mechanical loading. To observe the damage development during the three-point bending and splitting tests a 2D plane-stress nonlinear finite element analysis utilizing isotropic damage model was carried out and the results were validated against experimentally obtained data. The study revealed that the finite element model is able to capture the trends observed during the experimental investigation. The results of the numerical modeling and experimental investigation show the advantages of the use of relatively compliant crushed brick aggregates in ancient structures.

• Periodical: Applied Mechanics and Materials (Volume 486)
• Pages: 289-294
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.486.289
• Online since: December 2013
• Authors: Pavel Tesárek*, Václav Nežerka, Pavel Padevět, Jakub Antoš, Tomáš Plachy
• Keywords: Aggregate Stiffness, Crushed Bricks, Finite Element Method (FEM), Mechanical Property, Mortar

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