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BARTH, Fernando. The thermal behaviour of GRC insulated panels on the facade of buildings. In: CONFERENCE ON PASSIVE AND LOW ENERGY ARCHITECTURE, 16., 1999, Brisbane. Anais... Brisbane: PLEA, 1999. p. 125-130.
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Abstract

This paper describes the behaviour of the Glass Reinforced Cement insulated panels on the façade of five Catalan buildings. The materials and layers of the panels can be calculated in order to satisfy thermal and acoustic requirements. The insulation requirements can be satisfied by a polystyrene, polyurethane or glass fibre internal layer. This internal layer usually increases significantly the thermal resistance of GRC panels. The permeability of GRC to water vapour is also very high and depends on age, storage conditions, density and water/cement ratio. In some of the case studies, calculated by the analytical method, there is some probability of interstitial condensation where the temperature is below the dew point of the air. This work shows the correlation between the position of the vapour control layer and the insulation layer in different forms of GRC panel construction: a single skin, a double skinsandwich, and a single skin with a stud frame. The results, presented by temperature gradients and dew point temperatures, show how efficient the correct position of the water vapour barrier and of the insulation layer is in avoiding interstitial condensation in GRC panels in winter conditions.
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