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Use of glass polishing waste in the development of ecological ceramic roof tiles by the geopolymerization process
Author(s) -
Azevedo Afonso R. G.,
Marvila Markssuel Teixeira,
Rocha Higor Azevêdo,
Cruz Lucas Reis,
Vieira Carlos Mauricio Fontes
Publication year - 2020
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13585
Subject(s) - materials science , tile , metakaolin , shrinkage , polishing , ceramic , raw material , absorption of water , sintering , geopolymer , composite material , curing (chemistry) , metallurgy , waste management , cement , compressive strength , chemistry , engineering , organic chemistry
The production process of ceramic roof tiles requires a large consumption of natural raw material, such as clay, and energy consumption in the sintering process. Thus, the objective of this research was the development of more ecological tile for civil construction, adopting the process of geopolymerization, which does not require burning, and the use of glass polishing waste, in partial replacement of natural raw material. Prismatic specimens were made with a ratio of alkaline solution/ (metakaolin + waste) = 0.26 and variation of the curing time in 7, 28, and 60 days, and a ratio of precursors with SiO 2 /Al 2 O 3 varying in 2.5, 3.0, 3.5, and 4.0 for the evaluation of technological properties such as apparent specific mass, linear shrinkage, water absorption, and mechanical resistance to flexion, in addition to microstructural evaluations and the physical, chemical, and mineralogical characterization of the waste. The results showed that the glass waste had potential for use as a precursor in the geopolymerization process, and that the specimens with a 7 days cure and a SiO 2 /Al 2 O 3 = 4 ratio are the most recommended for the production of roof tiles for civil construction.