Unconventionally Made-Cellular Glass Aggregate

Journal La Multiapp

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Title Unconventionally Made-Cellular Glass Aggregate
Creator Paunescu, Lucian
Axinte, Sorin Mircea
Cosmulescu, Felicia
Subject Cellular Glass Aggregate
Residual Glass
Calcium Carbonate
Microwave Heating
Description Improving the original manufacturing process in microwave field of a cellular glass aggregate using a recipe containing colored consumed drinking bottle, calcium carbonate (CaCO3) as an expanding agent, sodium borate (borax) as a fluxing agent and sodium silicate (Na2SiO3) as a binder is shown in the work. The main adopted technological measures were the advanced mechanical processing of residual glass at a grain dimension below 100 μm and especially the use of a high electromagnetic wave susceptible ceramic tube with a wall thickness reduced from 3.5 to 2.5 mm for the protection of the pressed glass-based mixture against the aggressive effect of microwave field and, in the same time, to achieve a preponderantly direct heating with electromagnetic waves. Of the tested variants, a recipe with 1.6 % calcium carbonate, 6 % borax, 8 % sodium silicate and the rest residual glass was determined to be optimal. The cellular glass aggregate had the bulk density of 0.22 g/cm3, heat conductivity of 0.079 W/m·K and compression strength of 5.9 MPa. The specific consumption of energy was very low (0.71 kWh/kg) below the range of reported values of the industrial processes consumption (between 0.74-1.15 kWh/kg).
Publisher Newinera Publisher
Date 2021-12-31
Type info:eu-repo/semantics/article
Peer-reviewed Article
Format application/pdf
Identifier http://www.newinera.com/index.php/JournalLaMultiapp/article/view/511
Source Journal La Multiapp; Vol. 2 No. 6 (2021): Journal La Multiapp; 21-31
Language eng
Relation http://www.newinera.com/index.php/JournalLaMultiapp/article/view/511/453
Rights Copyright (c) 2021 Journal La Multiapp

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