期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 261, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2020.119980
关键词
Lightweight aggregates; Glass Scraps; Waste management; Bloating; Scale-up
资金
- Emilia-Romagna Region [INVOLUCRO -CUP J42F17000130009 - POR FESR 2014-2020]
The firing behaviour of five waste glasses was studied to define key parameters able to predict bloating performances in industrial lightweight aggregates production. Bloating was investigated by hot-stage microscopy and laboratory kiln experiments, also with SiC as expanding agent. In-situ and ex-situ results were contrasted to shed light on the scale up process. Both macro- and microstructure of aggregates are related to the melt properties and crystallization phenomena. A phenomenological model for SiC-induced expansion was proposed. The glass chemical composition controls melt viscosity and kinetics of expansion, while the increase of aggregate size fosters the extent of bloating. (C) 2020 Elsevier Ltd. All rights reserved.
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