title: Use of FGD gypsum in fire resistant panels.
abstract: Gypsum from power plant flue gas desulphurization units (FGD gypsum) is a combustion by-product produced in high quantities. In this paper, gypsum panels composed of 100% FGD gypsum from two power plants have been subjected to different physico-chemical (density, pH, humidity), mechanical (flexural and compressive strength, surface hardness, impact resistance), fire resistance and environmental tests (leaching and radioactivity). The results obtained have been compared with the requirements established in some European standards for commercial gypsum and other standards for similar products. In addition, the panels manufactured have been compared with commercial gypsum panels in order to determine the recycling possibilities of this kind of material in this application.
authors.affiliation: Engineering School, Chemical and Environmental Engineering Department, University of Seville, E-41092 Seville, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Leiva
authors.forename: C
authors.initials: C
authors.lastname: García Arenas
authors.forename: L F
authors.initials: LF
authors.lastname: Vilches
authors.forename: J
authors.initials: J
authors.lastname: Vale
authors.forename: A
authors.initials: A
authors.lastname: Gimenez
authors.forename: J C
authors.initials: JC
authors.lastname: Ballesteros
authors.forename: C
authors.initials: C
authors.lastname: Fernández-Pereira
mesh_terms: D002133:Calcium Sulfate; D003247:Conservation of Natural Resources; D003252:Construction Materials; D005411:Flame Retardants; D011210:Power Plants
chemical_list: D005411:Flame Retardants; D002133:Calcium Sulfate