Abstract
Foamed glass is widely used in the industry as an insulating material. However, its mechanical properties are not well-investigated yet. Foamed glass is produced from glass waste that causes discrepancy in mechanical properties of the final product. This paper shows a way to increase the limit of the load capacity of foamed glass, which is very fragile and sensitive to mechanical and thermal loading conditions. In this paper, three different methods of load application on cellular glass structure (rough contact, resin and flour interfaces) and their influence on failure mechanisms were investigated in detail. The results of numerical analyses, based on finite elements method and compression strength tests using the digital image correlation method, indicate that the overall strength of the material is limited by boundary effects. A careful adjustment of the interface property is the main factor to draw useful conclusions and to extend load limits of cellular glass in engineering applications.
Highlights
Glass is the material that has had a major impact on the development of civilization through scientific discoveries in the field of microcosm and macrocosm
The glass foam sample and the glass foam covered with the resin sample showed similar results except of the beginning of the force application (Fig. 10a)
This study presents theoretical and experimental results of the failure mechanism of glass foam obtained from glass waste, which can cause discrepancy in mechanical properties of the final product
Summary
Glass is the material that has had a major impact on the development of civilization through scientific discoveries in the field of microcosm (meaning cell structure of living organisms and infectious agents— microscope) and macrocosm (concerning observations of the planetary system and galactic systems using a telescope). Bai et al [8] studied synthesis and properties of foam glass obtained from waste glass and fly ash They stated that the material had a closed foam structure with a bulk density of 267.2 kg m-3 and a compressive strength of 0.9829 MPa. Guo et al [9] prepared high strength foam glass ceramics from waste. Foam ceramics of red mud from aluminum industry and fly ash from the thermal power plant with addition of sodium borate and sodium silicate were prepared and studied by Chen et al [11] These foams had a porosity of 64.14–74.15%, the compressive strength of 4.04–10.63 MPa, the flexural strength of 2.31–8.52 MPa, bulk density of 0.51–0.64 g cm-3, and water absorption of * 2.31–6.02%. We performed numerical analyses based on the finite elements method and strength tests, with the usage of digital image correlation method (DIC) that allows us to draw useful conclusions for engineering applications of foamed glass
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