Foam Glass Gravel Experimentally Made in a 10 kW-Microwave Oven

Journal La Multiapp

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Field Value
Title Foam Glass Gravel Experimentally Made in a 10 kW-Microwave Oven
Creator Paunescu, Lucian
Axinte, Sorin Mircea
Cosmulescu, Felicia
Subject Foam Glass Gravel Lump
Microwave Heating
Glass Waste
Water Glass
Description Abstract                                                        
The experimental manufacture of foam glass gravel from glass waste has been quantitatively extended by increasing the power of the microwave oven from 0.8 to10 kW, the authors' interest being focused on the quality of the foamed product. The work equipment was rather improvised, the existing used oven not being adequate except to small extent for the requirements of the experiment, but it allowed obtaining a product similar to those industrially manufactured by conventional techniques. Using a recipe previously tested on the 0.8 kW-microwave oven composed of 1 wt.% glycerol as a liquid foaming agent together with 8 wt.% water glass as an enveloping agent and 8 wt.% water as a binder, the main features of the foam glass gravel lumps were: bulk density of 0.22 g/cm3, porosity of 88.9%, thermal conductivity of 0.057 W/m·K, compressive strength of 5.9 MPa and pore size between 0.10-0.30 mm. The specific energy consumption was negatively influenced by the excessive internal volume of the oven, but even under these conditions its value was relatively low (between 1.53-1.69 kWh/kg).
Publisher Newinera Publisher
Date 2021-06-11
Type info:eu-repo/semantics/article
Peer-reviewed Article
Format application/pdf
Source Journal La Multiapp; Vol. 2 No. 2 (2021): Journal La Multiapp; 37-46
Language eng
Rights Copyright (c) 2021 Journal La Multiapp

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