UNCONVENTIONAL TECHNIQUE USED TO MANUFACTURE POROUS HIGH-STRENGTH GLASS FOAM

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

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 ºC 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.

Cuvinte cheie

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