NONCONVENTIONAL METHOD OF COLD PREPARING THE CELLULAR GLASS
The preparation at room temperature of cellular glass from recycled residual glass and fly ash was made adopting a manufacturing method recently applied in the case of geopolymer foam. Sodium perborate in aqueous solution as a blowing agent and detergent as a surfactant have been experimentally tested in several versions. The optimal cellular glass product was obtained by mixing 2.6 % sodium perborate, 0.2 % surfactant, and 7.6 % water addition. The characteristics of this expanded product were: density of 0.65 g·cm-3, heat conductivity of 0.134 W·m-1·K-1, and compression resistance of 1.2 MPa, being satisfactory for its application as heat insulating product in construction. The main advantage of this method was the product manufacture in satisfactory quality conditions without supplementary energy consumption and greenhouse gas emissions (CO2) into the atmosphere, like in the case of the usual manufacturing cellular products at high temperature.
2. The European Container Glass Federation (FEVE)-Environmental, Social and Economic Contribution of the Container Glass Sector in Europe, Final Report, February (2015).
3. Scarinci, G., Brusatin, G., Bernardo, E., Cellular Ceramics: Structure, Manufacturing, Properties and Applications, Scheffler M., Colombo, P. (eds.), Wiley-VCH Verlag GmbH & Co KGaA, Weinheim, Germany, pp. 158-176, (2005).
4. Zeren, D., Șentürk, U., Güden, M., The expansion behavior of slurries containing recycled glass powder, carboxymethyl cellulose, lime and aluminum powder, Construction and Building Materials, Vol. 240, Elsevier, (2020).
5. Foam Glass Manufacturing, Energocell Foam Glass, Debrecen, Hungary, (2014).
6. Paunescu, L., Dragoescu, M.F., Axinte, S.M., Cosmulescu, F., Nonconventional manufacture technique of cellular glass from recycled aluminosilicate glass-based waste, Material Science & Engineering International Journal, Vol. 5, No. 1, pp. 11-16, (2021).
7. Paunescu, L., Axinte, S.M., Fly ash cenosphere from coal combustion in power plant used in cellular glass making, Academic Journal of Manufacturing Engineering, Vol. 20, No. 3, pp. 49-54, (2022).
8. Paunescu, L., Axinte, S.M., Cosmulescu, F., Paunescu B.V., The use of calcium carbonate as a foaming agent of glass waste for unconventional manufacture of a light glass foam with adequate mechanical strength, Buletinul Institutului Politehnic Iasi, Sectia Chimie si Inginerie Chimica, Vol. 68 (72), No. 4, pp. 93-106, (2022).
9. Hertwich, E.G., Ali, S., Ciacci, L., Fishman, T., Material efficiency strategies to reducing greenhouse gas emissions associated with buildings, vehicles, and electronics, Environmental Research Letters, Vol. 14, No. 4, (2019).
10. Kaneshira, S., Kanamori, S., Nagashima, K., Saeki, T., Visbal, H., Fukui, T., Hirao, K., Controllable hydrogen release via aluminium powder corrosion in calcium hydroxide solution, Asian Ceramic Societies, Vol. 1, No. 3, pp. 296-303, (2013).
11. Paunescu, L., Axinte, S.M., Paunescu, B.V., New manufacturing method of glass foam by cold expansion of glass waste, Journal La Multiapp, Vol. 2, No. 3, pp. 1-9, (2021).
12. Phavongkham, V., Wattanasiriwech, S., Cheng, T-W., Wattanasiriweck, D., Effects of surfactant on thermos-mechanical behaviour of geopolymer foam paste made with sodium perborate foaming agent, Construction and Buildind Materials, Vol. 243, (2020).
13. Beneventi, D., Carré, B., Gandini, A., Role of surfactant structure on surface and foaming properties, Colloids and Surfaces A Physicochemical and Engineering Aspects, Vol. 189, No. 1-3, pp. 65-73, (2001).
14. Manual of weighing applications, Part 1-Density, (1999).
15. Anovitz, L.M., Cole, D.R., Characterization and analysis of porosity and pore structures, Review in Mineralogy and Geochemistry, Vol. 80, No. 1, pp. 61-164, (2015).
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