Thermal Conductivity of Sand-Lime Products Modified with Foam Glass Granulate

Waste glass constitutes a significant part of general waste worldwide. Unfortunately, only a small percentage is recycled. It is, therefore, quite important that it can be applied in the production of construction materials. The main aim of this article is to determine the thermal conductivity of th...

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Bibliographic Details
Published in:Materials 2021-09, Vol.14 (19), p.5678
Main Authors: Jasińska, Iga, Dachowski, Ryszard, Jaworska-Wędzińska, Monika
Format: Article
Language:English
Subjects:
Aggregates
Cement
Concrete
Conduction heating
Conductive heat transfer
Construction industry
Construction materials
Density
Granulation
Heat conductivity
Insulation
Landfill
Lime
Pore size distribution
Recycling
Thermal conductivity
Water absorption
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Summary:Waste glass constitutes a significant part of general waste worldwide. Unfortunately, only a small percentage is recycled. It is, therefore, quite important that it can be applied in the production of construction materials. The main aim of this article is to determine the thermal conductivity of the products modified with granulated foam glass (GFG) (recycled product) of the 0.25–0.5 mm fraction, as well as to indicate dependence of the change in volume density of samples caused by the use of GFG and the change of the thermal conductivity coefficient compared to reference samples. For the purpose of this research, various parameters were examined i.a. volume density, water absorption, determination of the pore size distribution by mercury porosimetry and determination of the heat conduction coefficient with the use of a plate apparatus. The test results were developed on the basis of a mathematical model that determined the influence of the filler on the functional properties of the product. The research has shown that the use of GFG in the sand-lime products will contribute to lowering their thermal conductivity by more than 50% compared to traditional products.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14195678