Development of fly ash boards with thermal, acoustic and fire insulation properties.
This paper presents an experimental analysis on a new board composed of gypsum and fly ashes from coal combustion, which are mutually compatible. Physical and mechanical properties, sound absorption coefficient, thermal properties and leaching test have been obtained. The mechanical properties showed similar values to other commercial products. As far as the acoustic insulation characteristics are concerned, sound absorption coefficients of 0.3 and 0.8 were found. The board presents a low thermal conductivity and a fire resistance higher than 50 min (for 4 cm of thickness). The leaching of trace elements was below the leaching limit values. These boards can be considered as suitable to be used in building applications as partitions.
University of Seville, Higher Technical School of Engineering, Department of Chemical and Environmental Engineering, Camino de los Descubrimientos s/n E-41092, Seville, Spain. Electronic address: cleiva@us.es.
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Leiva
University of Seville, Higher Technical School of Engineering, Department of Chemical and Environmental Engineering, Camino de los Descubrimientos s/n E-41092, Seville, Spain.
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Arenas
University of Seville, Higher Technical School of Engineering, Department of Chemical and Environmental Engineering, Camino de los Descubrimientos s/n E-41092, Seville, Spain.
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Vilches
University of Seville, Higher Technical School of Engineering, Department of Chemical and Environmental Engineering, Camino de los Descubrimientos s/n E-41092, Seville, Spain.
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Alonso-Fariñas
University of Seville, Higher Technical School of Engineering, Department of Chemical and Environmental Engineering, Camino de los Descubrimientos s/n E-41092, Seville, Spain.
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Rodriguez-Galán
D002133:Calcium Sulfate / Q000032:analysis*; D003031:Coal; D060729:Coal Ash / Q000032:analysis*; D003252:Construction Materials / Q000032:analysis*; D017745:Incineration
D003031:Coal; D060729:Coal Ash; D002133:Calcium Sulfate
Acoustic insulation; Fire resistance; Fly ashes; Leaching; Thermal conductivity