NONCONVENTIONAL MANUFACTURE OF CELLULAR GLASS FROM RECYCLED POST-CONSUMER BOTTLE AND BEECH LEAVES AS A VEGETABLE EXPANDING AGENT

  • Lucian Paunescu Cosfel Actual SRL Bucharest
  • Sorin Mircea Axinte Daily Sourcing & Research SRL Bucharest
  • Felicia Cosmulescu Cosfel Actual SRL Bucharest
  • Marius Florin Dragoescu University POLITEHNICA of Bucharest
Keywords: cellular glass, microwave warming, consumed drink glass packaging, beech leaf, expanding agent

Abstract

The paper exposes testing results corresponding to the process of manufacture cellular glass from consumed drink glass packaging, a vegetable expanding agent (beech leaves) used for the world premiere, and borax as a flux agent. The process of sintering/expanding the powder material mixture was performed by microwave irradiation at 825-834 ºC, as a process improved by the authors of this paper and applied in previous experiments, unlike the conventional procedures used in processes of the same type.  The nonconventional heating has allowed a higher energy efficiency of the process and reduced energy consumption (0.78 kWh/kg). The optimal version of the manufacturing process with 30 % beech leaves, 65 % consumed drink glass packaging, and 5 % borax led to obtaining a cellular glass with features adequate for its use as heat insulating material in civil engineering having density of 0.60 g/cm3, heat conductivity of 0.124 W/mK, compression resistance of 5.0 MPa, absorbing the water of 1.5 vol. %, and cells dimension between 0.7-1.0 mm.

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Published
2022-06-30
How to Cite
Paunescu, L., Axinte, S., Cosmulescu, F., & Dragoescu, M. (2022). NONCONVENTIONAL MANUFACTURE OF CELLULAR GLASS FROM RECYCLED POST-CONSUMER BOTTLE AND BEECH LEAVES AS A VEGETABLE EXPANDING AGENT. Nonconventional Technologies Review, 26(2). Retrieved from http://revtn.ro/index.php/revtn/article/view/374

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