Determinación de la resistencia al vapor de agua del revestimiento E.I.F.S. al 90 % de humedad relativa del aire
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Fecha
2011
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Universidad Andrés Bello
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Licencia CC
Licencia CC
Resumen
La solución constructiva EIFS (Exterior lnsulation Finish System) o Sistema de acabado
exterior, es una importante alternativa a la hora de diseñar con el objetivo de aislar térmica,
acústica, y húmedamente una edificación, ya sea habitacional o comercial. Su fácil
comportamiento moldeable, hace que sea una opción arquitectónica atractiva, y se puede
adaptar a formas complejas.
Este tipo de solución constructiva se forma en base a un conjunto de materiales, que al
unirlos forman una capa protectora que logra aislar térmica, acústica, y húmedamente en
todo su perímetro. El producto contiene varias capas que se componen en, una barrera de
humedad, un substrato en base a fibrocemento, EPS (poliestireno expandido), malla de fibra
de vidrio, una protección primaria llamada capa base y una terminación secundaria dónde los
dos últimos componentes son en base a una mezcla de polímeros acrílicos.
En el proyecto se evaluaron sus capacidades aislantes específicamente su grado de
permeabilidad siguiendo la NCh 2457 Of. 2001 llamada "Determinación de la permeabilidad
al vapor de agua (humedad)".
Para ello se elaboró un experimento en el cual se crearon 3 muestra representativas de la
solución en una probeta de 37cm x 37 cm, dónde fue llevada a una cámara de humedad,
durante 3 semanas o hasta que la ganancia de humedad sea cero. Anotando la ganancia de
humedad de la probeta.
Con los resultados que se obtuvieron en los ensayos, se comparó con varios materiales de
construcción cuyos índices de permeabilidad ya habían sido calculados. Dejando un
comportamiento de la solución dentro de los parámetros normales que se encuentran en
distintos materiales.
The constructive solution EIFS (Exterior lnsulation Finish System) or exterior finish system is an important alternative when it comes to design with the aim of isolating thermal, acoustic, and moist a construction, whether residential or commercial. lts ease of molding behavior, makes it an attractive architectural option, and can adapt to complex shapes. This kind of constructive solution is formed based on a set of materials that when put together forma protective layer that manages to isolate thermal, acoustic, and moist all around. The product contains several layers that are composed in a moisture barrier, a cement-based substrate, EPS (expanded polystyrene), glass fiber mesh, a base layer called primary protection and a high end where the last two components are based on a blend of acrylic polymers. The project assessed its insulating capabilities their permeability specifically following the 2457 NCH Of. 2001 called "Determination of permeability to water vapor (humidity)." For this purpose an experiment was developed which created 3 representative sample of the solution in a test tube of 37cm x 37 cm, where he was taken to a humidity chamber for 3 weeks or until the moisture gain is zero. Scoring moisture gain of the specimen. With the results obtained in the tests was compared with various building materials whose patency rates had been calculated. Leaving behavior of the solution within the normal range found in various materials.
The constructive solution EIFS (Exterior lnsulation Finish System) or exterior finish system is an important alternative when it comes to design with the aim of isolating thermal, acoustic, and moist a construction, whether residential or commercial. lts ease of molding behavior, makes it an attractive architectural option, and can adapt to complex shapes. This kind of constructive solution is formed based on a set of materials that when put together forma protective layer that manages to isolate thermal, acoustic, and moist all around. The product contains several layers that are composed in a moisture barrier, a cement-based substrate, EPS (expanded polystyrene), glass fiber mesh, a base layer called primary protection and a high end where the last two components are based on a blend of acrylic polymers. The project assessed its insulating capabilities their permeability specifically following the 2457 NCH Of. 2001 called "Determination of permeability to water vapor (humidity)." For this purpose an experiment was developed which created 3 representative sample of the solution in a test tube of 37cm x 37 cm, where he was taken to a humidity chamber for 3 weeks or until the moisture gain is zero. Scoring moisture gain of the specimen. With the results obtained in the tests was compared with various building materials whose patency rates had been calculated. Leaving behavior of the solution within the normal range found in various materials.
Notas
Tesis (Ingeniería en Construcción)
Palabras clave
Revestimientos Protectores, Impermeabilización, Normas, Chile