Open AccessNONCONVENTIONAL TECHNIQUE FOR PRODUCING HIGH MECHANICAL STRENGTH GLASS FOAM FROM GLASS WASTE
Author(s) -
Lucian Păunescu,
Marius Florin Drăgoescu,
Sorin Mircea Axinte,
Ana Casandra Sebe
Publication year - 2019
Publication title -
journal of engineering studies and research
Language(s) - English
Resource type - Journals
eISSN - 2344-4932
pISSN - 2068-7559
DOI - 10.29081/jesr.v25i2.320
Subject(s) - compressive strength , materials science , mechanical strength , sodium silicate , thermal conductivity , composite material , absorption of water , foaming agent , aqueous solution , thermal insulation , absorption (acoustics) , sodium carbonate , thermal , glass microsphere , porosity , sodium , chemical engineering , microsphere , metallurgy , chemistry , meteorology , physics , layer (electronics) , engineering
In the work experimental results on the manufacture of glass foam with high mechanical strength from glass waste are presented. By replacing the usual conventional energy source with a nonconventional energy (electromagnetic waves) the heating efficiency allows a fast and economical manufacturing process. Calcium carbonate as a foaming agent and an addition of sodium silicate (aqueous solution) as a binder were used. By their physico-mechanical and morphological features (0.40-0.66 g/ cm the apparent density, 0.054-0113 W/ m·K the thermal conductivity, 2.2-6.3 MPa the compressive strength, below 1.2 % the water absorption and under 2 mm the pore size), the foams are appropriate for their use as replacer of existing similar building materials on the market.
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