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Influence of mortar type and unit type on compressive strength and stiffness of masonry

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Resumo:According to EN 1996 1-1, the compressive strength of masonry can be estimated based on information related to its components: units and mortar. While it is noticeable that the masonry unit's features (material, configuration, and compressive strength) play a considerable influence, the mortar also contributes to the masonry's structural behaviour due to the multiple functions it performs (load transfer, strength improvement, among others). Therefore, this work aims to understand the influence of both components on compressive strength and modulus of elasticity of masonry. Thus, two types of mortar were considered: 1:1:6, and 1:0:5 (Cement: Lime: Sand), defined by volume. Both mortars are associated with mortar class M5, which is one of the most recurrent classes at the European level. For the units, two types of clay bricks were chosen, which differ from each other by the type of configuration (frogged and vertical perforated) and compressive strength (≥25 MPa, and ≥75 MPa). Thus, the masonry wallets’ construction, according to EN1052-1, was performed considering the four combinations of units and mortar types. Then, at 90 days of age, compressive and modulus of elasticity tests were executed at the masonry (EN1052-1) and mortar level (EN1015-11 and EN 12390-13). This study helps to better understand the contribution of mortar and the impact of the unit configuration on these masonry properties.
Autores principais:Briceño, C.
Outros Autores:Azenha, Miguel; Vasconcelos, Graça; Lourenço, Paulo B.
Assunto:Cement-lime based mortar Clay brick masonry Clay units Compressive strength Stiffness
Ano:2025
País:Portugal
Tipo de documento:comunicação em conferência
Tipo de acesso:acesso restrito
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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