title: Reuse of ultrafine mineral wool production waste in the manufacture of refractory concrete.
abstract: The paper deals with the mineral wool production waste (cupola dust - CD), presents CD characterization and aims to reuse CD in production of refractory concrete with calcium aluminate cement. The study of CD covers its chemical, phase and thermal analyses along with the morphological study and determination of particles size distribution. Zeta-potential, electrical conductivity and pH values of CD suspension are presented in the paper as well. Commercial microsilica additive in refractory concrete has been replaced with cupola dust. Compositions of refractory concrete have been prepared by incorporating 1%, 2% and 3% of CD. The bulk density, ultrasonic wave velocity, cold crushing strength and thermal shock resistance of the created refractory concrete have been determined. Based on experimental results, it has been found that cupola dust may be used for the production of refractory concrete. The environmental impact related to the CD reuse in refractory concrete production has been evaluated as well.
authors.affiliation: Vilnius Gediminas Technical University, Sauletekio al. 11, LT-10223, Vilnius, Lithuania.
authors.forename: R
authors.initials: R
authors.lastname: Stonys
authors.affiliation: National University of Science and Technology "MISIS'', Leninsky pr. 4, Moscow 119049, Russia.
authors.forename: D
authors.initials: D
authors.lastname: Kuznetsov
authors.affiliation: Riga Technical University, Kalku str. 1, LV-1658, Riga, Latvia.
authors.forename: A
authors.initials: A
authors.lastname: Krasnikovs
authors.affiliation: Vilnius Gediminas Technical University, Sauletekio al. 11, LT-10223, Vilnius, Lithuania. Electronic address: jelena.skamat@vgtu.lt.
authors.forename: J
authors.initials: J
authors.lastname: Škamat
authors.affiliation: Kaunas University of Technology, K. Donelaičio str. 73, LT-44249, Kaunas, Lithuania.
authors.forename: K
authors.initials: K
authors.lastname: Baltakys
authors.affiliation: Vilnius Gediminas Technical University, Sauletekio al. 11, LT-10223, Vilnius, Lithuania.
authors.forename: V
authors.initials: V
authors.lastname: Antonovič
authors.affiliation: Vilnius Gediminas Technical University, Sauletekio al. 11, LT-10223, Vilnius, Lithuania.
authors.forename: O
authors.initials: O
authors.lastname: Černašėjus
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry*; D003252:Construction Materials / Q000032:analysis*; D004391:Dust / Q000032:analysis; D004553:Electric Conductivity; D006863:Hydrogen-Ion Concentration; D010316:Particle Size; D017640:Silicates / Q000737:chemistry*; D014866:Waste Products / Q000032:analysis*; D014961:X-Ray Diffraction
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004391:Dust; D017640:Silicates; D014866:Waste Products; C035219:calcium aluminate; C031293:calcium silicate
keywords: Calcium aluminate cement; Cupola dust; Microsilica; Mineral wool waste; Refractory concrete