Buletinul Institutului Politehnic din Iași Secția Chimie și Inginerie Chimică ISSN: 2537-2947
ISSN-L: 0254-7104
2024, Volume 70(74), Issue 1 (January), pp. 69 - 80
Strength and Porous Building Material Prepared from Recycled Residual
Glass Through Microwave Radiation
LUCIAN PĂUNESCU, Daily Sourcing & Research SRL Bucharest, Romania, lucianpaunescu16@gmail.com SORIN MIRCEA AXINTE, Daily Sourcing & Research SRL Bucharest, Romania,
National University of Science and Technology POLITEHNICA Bucharest, Faculty
of Applied Chemistry and Materials Science, Bucharest, Romania
Abstract New method of producing strength and porous cellular glass
with load-bearing properties from recycled flat glass using simultaneously
two expanding agents: glycerol (liquid) and eggshell (solid) recycled as a
by-product from the food industry was designed and tested by microwave
heating. Eggshell was used as a substitute for the usual calcium carbonate
and the microwave heating was made by the original method of predominantly
direct and partially indirect heating leading to energy saving. Results
showed that cellular glass with low bulk density (0.16-0.19 g·cm-3) and high
compression strength (up to 7.6 MPa) were obtained. Keywords: cellular
glass, flat glass waste, microwave heating, glycerol, eggshell.