The aim of this work is to demonstrate the applicability of innovative materials, such as Glass Fibre Reinforced Polymer profiles, structural adhesives, and solar selective coatings, on construction elements, from the design phase to the industrialization process, with the objective of their commercialization. Following the “Technological Simplification” principle, the research group designed and patented the Full Glass window frame and the Structural Member for curtain walls, highperformance and easy to assemble components composed of these innovative materials. Two different aspects were investigated: the mechanical performance of the GFRP profiles and of the structural adhesives, for their application both on windows and on curtain walls; the energy performance of the solar selective coatings, for their implementation on the glass surfaces. The degradation mechanisms (durability) of the materials were also analysed. The methods used were mostly of the experimental type. The components and materials properties (mechanical, physical, chemical, optical) were tested and the effects of different types of ageing conditions were analysed (continuous condensation, temperature and moisture changes, UV irradiation and saline spray). Furthermore, numerical and analytical studies were carried out, with the objective to check and validate the results obtained through experimental tests. The main outcome was the validation of the patents basic ideas, which is a key point in the industrialization process of the construction elements. Experimental results, in fact, demonstrated that the use of GFRP profiles, also bonded with structural adhesives and combined with steel, is successful on windows and curtain walls, even when they are exposed to adverse environmental conditions. Furthermore, the study of the glass coatings was useful to deepen the improvement of the energy performance of the glazed construction elements.
L’obiettivo della tesi è quello di dimostrare l’applicabilità di materiali innovativi, quali i profili in pultruso rinforzati con fibre di vetro (GFRP), gli adesivi strutturali e i film selettivi solari, negli elementi costruttivi come serramenti e facciate continue, dalla fase di progettazione all’intero processo di industrializzazione. Secondo il principio della “Semplificazione Tecnologica" il gruppo di ricerca ha progettato e brevettato la finestra Full Glass e il Montante per facciate continue, elementi costruttivi con elevate performance meccaniche e termiche, realizzati con un numero limitato di componenti. In questo studio vengono affrontati gli aspetti legati alle caratteristiche meccaniche per l’applicazione dei suddetti materiali nei montanti e traversi dei serramenti e delle facciate continue, e l’aspetto energetico riguardante le pannellature dei vetrocamera. Inoltre viene analizzata l’affidabilità nel tempo (durabilità) dei materiali impiegati, studiandone i meccanismi di degrado. I metodi utilizzati sono di tipo sperimentale: le proprietà dei componenti e dei materiali (meccaniche, fisiche, chimiche, ottiche) sono state testate prima e dopo l’esposizione a differenti tipologie di invecchiamento artificiale (continua condensazione, cambiamenti di temperatura e umidità, irraggiamento UV e spray salino). Inoltre sono stati condotti studi numerici e analitici con l’obiettivo di validare i dati ottenuti. Il principale risultato è stato quello di confermare l’idea di base dei brevetti, un punto chiave del processo di industrializzazione. I test sperimentali hanno infatti dimostrando la fattibilità dell’uso dei profili in GFRP, incollati con adesivi strutturali e combinati con l’acciaio, nei serramenti e nelle facciate continue, anche successivamente all’esposizione a condizioni ambientali avverse. Inoltre lo studio dei film selettivi solari è stato utile ai fini del miglioramento delle performance energetiche degli elementi costruttivi vetrati.
Applications of industrialised GFRP components, structural adhesives and solar selective coatings on construction elements: durability experimental studies / Giampaoli, Margherita. - (2017 Mar 02).
Applications of industrialised GFRP components, structural adhesives and solar selective coatings on construction elements: durability experimental studies.
GIAMPAOLI, MARGHERITA
2017-03-02
Abstract
The aim of this work is to demonstrate the applicability of innovative materials, such as Glass Fibre Reinforced Polymer profiles, structural adhesives, and solar selective coatings, on construction elements, from the design phase to the industrialization process, with the objective of their commercialization. Following the “Technological Simplification” principle, the research group designed and patented the Full Glass window frame and the Structural Member for curtain walls, highperformance and easy to assemble components composed of these innovative materials. Two different aspects were investigated: the mechanical performance of the GFRP profiles and of the structural adhesives, for their application both on windows and on curtain walls; the energy performance of the solar selective coatings, for their implementation on the glass surfaces. The degradation mechanisms (durability) of the materials were also analysed. The methods used were mostly of the experimental type. The components and materials properties (mechanical, physical, chemical, optical) were tested and the effects of different types of ageing conditions were analysed (continuous condensation, temperature and moisture changes, UV irradiation and saline spray). Furthermore, numerical and analytical studies were carried out, with the objective to check and validate the results obtained through experimental tests. The main outcome was the validation of the patents basic ideas, which is a key point in the industrialization process of the construction elements. Experimental results, in fact, demonstrated that the use of GFRP profiles, also bonded with structural adhesives and combined with steel, is successful on windows and curtain walls, even when they are exposed to adverse environmental conditions. Furthermore, the study of the glass coatings was useful to deepen the improvement of the energy performance of the glazed construction elements.File | Dimensione | Formato | |
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