Influencia del transporte de agua en morteros de revestimiento, en la resistencia a la adherencia
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Data
2014
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En el presente trabajo se determina cómo ocurre el transporte de agua, en el sistema mortero/bloque, con el objetivo de vincular el comportamiento de la resistencia
a la adherencia por tracción perpendicular, con el transporte de agua y la porosidad del substrato. Para ello fueron fabricados dos morteros con áridos de diferentes
granulometrías, a los cuales se le determinó sus propiedades en estado fresco y en estado endurecido. Se determinó la cantidad de agua transportada, a partir de
mediciones de humedad con sensores resistivos, en diferentes camadas de los morteros aplicados sobre sustrato de hormigón y sustrato cerámico. Los bloques de
albañilería usados como sustrato, fueron caracterizados atendiendo a sus propiedades físicas, relacionadas con la absorción de agua y la porosidad. Los resultados
mostraron que existe una relación directa entre el porciento de agua transportada en las diferentes camadas, con la resistencia a la adherencia del mortero.
Comprobándose además, la no existencia de relación entre los ensayos de retención de agua del mortero y el total de agua transportada en el sistema
mortero/bloque.
In the present study was performed an evaluation of the water transport in the mortar/block system, with the objective of linking the behavior of the bond strength by perpendicular tensile stress, and with water movement and porosity of mortar. This was done by producing two mortars with aggregates of different size distribution. Properties were determined in fresh state and bond strength was measured when hardened. The water transport profile was constructed by resistive sensors for measuring moisture. Measurements were done in different coats of mortars applied on a concrete substrate and the ceramic substrate. Masonry blocks used as a substrate were characterized according to their physical properties related to water absorption and porosity. The profile leads to the transport of water affects the porosity of mortar and showed that there is a direct relationship between the percentages of water being transported at different litters, with resistance to adhesion. Was checked also the not existence of relationship between the water retention test mortar and total water transported in the mortar-block system.
In the present study was performed an evaluation of the water transport in the mortar/block system, with the objective of linking the behavior of the bond strength by perpendicular tensile stress, and with water movement and porosity of mortar. This was done by producing two mortars with aggregates of different size distribution. Properties were determined in fresh state and bond strength was measured when hardened. The water transport profile was constructed by resistive sensors for measuring moisture. Measurements were done in different coats of mortars applied on a concrete substrate and the ceramic substrate. Masonry blocks used as a substrate were characterized according to their physical properties related to water absorption and porosity. The profile leads to the transport of water affects the porosity of mortar and showed that there is a direct relationship between the percentages of water being transported at different litters, with resistance to adhesion. Was checked also the not existence of relationship between the water retention test mortar and total water transported in the mortar-block system.
Descrição
Palavras-chave
Mortero, Mortar, Revestimiento, Revestimiento, Transporte, Adherencia, Propiedades, Rendering, Transport, Properties, Bond
Citação
PAES, I. N.; BAUER, E.; CARASEK, H. ; PAVÓN, E. Influence of water transportation inside a mortar/block system. Revista de Ingeniería de Construcción, Santiago, v. 29, n. 2, p. 175-186, ago. 2014.