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Compatibilidade de ETICS com suportes heterogéneos
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A presente dissertação, com o título “Compatibilidade de ETICS com Suportes Heterogéneos”, está inserida na área de revestimentos de paredes de edifícios, sendo o único foco os Sistemas Compósitos de Isolamento Térmico pelo Exterior (ETICS) aplicáveis em paramentos exteriores de edifícios. O estudo desenvolvido e apresentado neste documento teve como propósito a análise das características da argamassa de colagem deste tipo de sistemas quando aplicada em diferentes suportes, determinando assim a influência do suporte no desempenho de ETICS. Para tal, foram analisados 2 tipos de suportes (suportes de tijolo cerâmico e de betão) separadamente, de forma a simular as zonas onde há suportes com características diferentes (designado por heterogeneidade do suporte), como as zonas de ligação parede – pilar/viga, características de obra nova. Este estudo permite dar resposta e compreender as causas intrínsecas de problemas que surgem em ETICS quando aplicados em diferentes suportes, pois suportes diferentes originam diferentes ligações ao sistema. Para este estudo, foi desenvolvida uma campanha experimental de acordo com as regras e procedimentos de ensaio especificados no EAD 040083-00-0404. Em alguns casos, foram adaptados os métodos de ensaio e requisitos com base nos existentes e, quando necessário, foram desenvolvidos métodos de ensaio específicos. A campanha experimental permitiu caracterizar os dois tipos de suportes e a argamassa de colagem aplicada sobre os mesmos, para analisar o desempenho e a compatibilidade da argamassa de colagem de ETICS ao suporte, sobretudo ao nível do desempenho à água da argamassa de colagem assim como da aderência da argamassa de colagem ao suporte.
Abstract The present dissertation, entitled “Compatibility of ETICS with Heterogeneous Substrates”, is inserted in the area of wall cladding of buildings, with the only focus being the External Thermal Insulation Composite Systems (ETICS) applicable to exterior walls of buildings. The study developed and presented in this document aimed to analyze the characteristics of the bonding mortar of this type of systems when applied to different substrates, thus determining the influence of the substrate on the performance of ETICS. For that reason, two types of substrates (ceramic brick and concrete substrates) were analyzed separately, in order to simulate the areas where there are substrates with different characteristics (called substrate heterogeneity), such as the wall – column/beam connection areas, characteristic of new construction. This study allows to answer and understand the intrinsic causes of problems that arise in ETICS when applied to different substrates, because different substrates create different connections to the system. For this study, an experimental campaign was developed according to the test rules and procedures specified in EAD 040083-00-0404. In some cases, test methods and requirements have been adapted on the basis of existing ones and, when necessary, specific test methods have been developed. The experimental campaign allowed the characterization of the two types of substrates and the bonding mortar applied to them, to analyze the performance and compatibility of the ETICS bonding mortar to the substrate, especially in terms of the water performance of the bonding mortar as well as the adherence of the bonding mortar to the substrate.
Abstract The present dissertation, entitled “Compatibility of ETICS with Heterogeneous Substrates”, is inserted in the area of wall cladding of buildings, with the only focus being the External Thermal Insulation Composite Systems (ETICS) applicable to exterior walls of buildings. The study developed and presented in this document aimed to analyze the characteristics of the bonding mortar of this type of systems when applied to different substrates, thus determining the influence of the substrate on the performance of ETICS. For that reason, two types of substrates (ceramic brick and concrete substrates) were analyzed separately, in order to simulate the areas where there are substrates with different characteristics (called substrate heterogeneity), such as the wall – column/beam connection areas, characteristic of new construction. This study allows to answer and understand the intrinsic causes of problems that arise in ETICS when applied to different substrates, because different substrates create different connections to the system. For this study, an experimental campaign was developed according to the test rules and procedures specified in EAD 040083-00-0404. In some cases, test methods and requirements have been adapted on the basis of existing ones and, when necessary, specific test methods have been developed. The experimental campaign allowed the characterization of the two types of substrates and the bonding mortar applied to them, to analyze the performance and compatibility of the ETICS bonding mortar to the substrate, especially in terms of the water performance of the bonding mortar as well as the adherence of the bonding mortar to the substrate.
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Palavras-chave
ETICS Suportes Suportes Heterogéneos Argamassa de colagem Substrate Heterogeneous substrates Adhesive mortar