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UNCONVENTIONAL TECHNIQUE USED TO MANUFACTURE POROUS HIGH-STRENGTH GLASS FOAM


LUCIAN PAUNESCU *1, SORIN MIRCEA AXINTE 1, 2, MARIUS FLORIN DRAGOESCU 2, BOGDAN VALENTIN PAUNESCU 3, FELICIA COSMULESCU 4
1. Daily Sourcing & Research SRL, 95-97 Calea Grivitei, sector 1, Bucharest 010705, Romania
2. University “Politehnica” of Bucharest, Faculty of Applied Chemistry and Materials Science, 1-7 Gh. Polizu street, sector 1, Bucharest 011061, Romania
3 Consitrans SA, 56 Polona street, sector 1, Bucharest 010504, Romania
4 Cosfel Actual SRL, 95-97 Calea Grivitei, sector 1, Bucharest 010705, Romania
* Corresponding author, email: lucianpaunescu16@gmail.com

Issue:

JESR, Number 4, Volume XXVII

Section:

Issue Nr. 4 - Volume 27(2021)

Abstract:

The paper presents experimental results obtained in the manufacturing process of porous high-strength glass foam for thermal insulation in buildings made of glass waste and kaolin clay as raw materials and dolomite as a foaming agent. The paper’s originality is the use of the unconventional microwave heating technique. The best product manufactured by this technique was that sintered at 1050 ÂșC using 18 wt.% kaolin clay and 3.5 wt.% dolomite. The product characteristics were: the apparent density of 0.66 g·cm-3, the thermal conductivity of 0.155 W/m·K, the compressive strength of 5.3 MPa and a microstructural homogeneity with pore size between 0.20-0.50 mm.

Keywords:

high-strength glass foam, glass waste, kaolin clay, dolomite, microwave heating, low specific energy consumption.

Code [ID]:

JESR202104V27S01A0011 [0005386]

Note:

Full paper:

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