Material selection and testing of composite panels made of glass and fibre-reinforced plastic
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SI: GLASS PERFORMANCE
Material selection and testing of composite panels made of glass and fibre-reinforced plastic Alina Joachim
. Jan Wu¨nsch . Bernhard Weller
Received: 13 April 2019 / Accepted: 9 November 2020 The Author(s) 2020
Abstract The trend in modern architecture towards high-quality building envelopes is continuing. Due to its high surface quality and the broad colour spectrum, enamelled glass is used for weather protection and as a design element. The novel elements discussed in this paper do not require any sealant or adhesive since the fibre-reinforced plastic (FRP) layer is directly applied on the rear glass surface. On the one hand, the applied polymer provides a matrix for embedding the fibres and on the other hand, it provides an adhesive bond to the glass. Therefore, no additional bonding process is required. The combination of both materials enables a full composite action. The novel material combination utilises the positive characteristics of each material. The high durability of glass provides protection against environmental impacts and the FRP provides an enhanced load-bearing behaviour. This paper presents the choice of suitable materials for FRP and gives an insight into the experimental testing of the novel material combination. This shows that the glass contributes to the load transfer in the system due to the significant coupling effects. Keywords Fibre-reinforced plastic Glass Building envelope Fac¸ade construction
A. Joachim (&) J. Wu¨nsch B. Weller Institute of Building Construction, Technische Universita¨t, Dresden, Germany e-mail: [email protected]
1 Introduction The trend in modern architecture towards a steady optimisation of building envelopes is continuing. Beside its function as a design element, a fac¸ade also contributes to the building’s energy balance. The ventilated rain screen fac¸ade combines both of them: thanks to the separation of insulation and weather protection, versatile design options are possible while maintaining high energy efficiency. The fac¸ade cladding could be made of wood, natural or artificial stone, ceramic or metal sheets or opaque glass (Reichel and Schultz 2015). When glass is being used, the coloured enamelled glass panel acts as a non-loadbearing cover plate which is attached to the loadbearing carrier plate and bonded with an elastic sealant several millimetres thick. Whilst the construction has the advantage that glass acts as optimal protection against rain and humidity, the bonding process between the glass panel and the load-bearing carrier plate is time-consuming because the elastic sealant needs several hours to cure (Knaack and Koenders 2018). Figure 1 shows a typical construction of a ventilated fac¸ade with glass panes bonded onto carrier plates. The carrier plate is connected to the metal substructure using local fixings. The thermal insulation is positioned in the metal substructure. There is a gap between the carrier plate and the thermal insulation, which a
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