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      Influence of the relationships between compressive strengths of mixed and industrialized mortars and concrete blocks on the behavior of masonry prisms Translated title: Influência das relações entre resistências à compressão de argamassas mistas e industrializadas e blocos de concreto no comportamento de prismas de alvenaria

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          Abstract

          Abstract The performance of masonry structures depends not only on the quality of blocks and mortars but also on their interactions. This study aims to evaluate the influence of unit and mortar characteristics on the compressive strength of masonry. Prisms were produced using concrete blocks with nominal strengths of 8 and 10 MPa, combined with mixed and industrialized mortars with lower, similar, and higher strengths compared to the blocks. Response surfaces and contour plots were generated to visualize the effects of unit and mortar properties on prism strength. Estimations were performed, and the failure mechanisms of prisms for various combinations of blocks and mortars were analyzed. The failure modes of the prisms were characterized by ductile failure (in weaker mortars), cohesive rupture of the assembly (in intermediate-strength mortars), and brittle failure (in stronger mortars), primarily due to lateral tensile forces acting on the blocks. The findings of this research contribute to the existing knowledge database in the field and can assist in the appropriate selection of blocks and mortars for structural masonry applications.

          Translated abstract

          Resumo O bom desempenho da alvenaria depende não somente da qualidade dos blocos e argamassas, mas também das interações que se processam entre eles. Este trabalho teve como objetivo avaliar a influência das unidades e das argamassas na resistência à compressão da alvenaria. Prismas foram produzidos com blocos de concreto de resistências nominais de 8 e 10 MPa e argamassas mistas e industrializadas com resistências inferior, aproximada e superior à do bloco. Superfícies de resposta e gráficos de contorno foram desenvolvidos para mostrar o efeito das unidades e das propriedades das argamassas na resistência dos prismas. Estimativas foram realizadas e os mecanismos de ruptura dos prismas para diferentes combinações de bloco e argamassa foram analisados. Os prismas romperam de forma dúctil (argamassas mais fracas), pela ruptura do conjunto (argamassas intermediárias) e de forma frágil (argamassa mais fortes), principalmente pela tração nos blocos. Os resultados complementam as pesquisas da área já existentes e pode ser usado para selecionar corretamente blocos e argamassas para alvenaria estrutural.

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          Most cited references70

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          Mechanics of hollow concrete block masonry prisms under compression: Review and prospects

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            Compressive strength of masonry made of clay bricks and cement mortar: Estimation based on Neural Networks and Fuzzy Logic

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              On the compressive strength prediction for concrete masonry prisms

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                Author and article information

                Journal
                riem
                Revista IBRACON de Estruturas e Materiais
                Rev. IBRACON Estrut. Mater.
                IBRACON - Instituto Brasileiro do Concreto (São Paulo, SP, Brazil )
                1983-4195
                2024
                : 17
                : 5
                : e17503
                Affiliations
                [01] Londrina Paraná orgnameUniversidade Estadual de Londrina orgdiv1Departamento de Construção Civil Brazil
                Article
                S1983-41952024000500202 S1983-4195(24)01700500202
                10.1590/s1983-41952024000500003
                a8593aed-53cf-4e98-9220-4466216edb2b

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 26 September 2023
                : 20 June 2023
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 77, Pages: 0
                Product

                SciELO Brazil

                Categories
                Original Article

                modo de ruptura,mixed mortar,industrialized mortar,concrete block prisms,masonry,failure modes,argamassa mista,argamassa industrializada,prismas de bloco de concreto,alvenaria

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