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Experimental evaluation of the growth rate of mould on finishes for indoor housing environments: Effects of the 2002/91/EC directive
Authors:Marco D'Orazio  Marco Palladini  Lucia Aquilanti  Francesca Clementi
Affiliation:1. Department of Architecture Construction and Structures - DACS, Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy;2. Department of Food Science, Agricultural-Engineering, Physics, Agricultural Economics and Landscape Science - SAIFET, Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy
Abstract:We report the results of a study to evaluate the growth rate of three species of mould on plasters, finishes and paints typically used in structures with heavy weight building envelopes. The aim was to determine the influence of the chemical composition (in terms of organic fraction of the materials) on the growth rate of moulds. The study was carried out in the following steps: – characterization of materials; – inoculation of mould spores (3 species) on 7 types of material (2 plasters, 3 finishes, 2 paints); – growth in a climatic chamber (23 °C and 90% RH); – analysis of the mould growth rate using various experimental techniques (fluorescence microscopy analysis, thermogravimetric analysis, etc.). Results show a clear correlation between the organic substances contained in paints, plasters and finishes and the growth rate of the mould.
Keywords:Mould  Plaster  Paint  Biocontamination
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