An investigation of foaming additives and usage rates in the production of ultra-light foam glass

Davraz, Metin; Koru, Murat; Akdağ, Ali Ekrem; Kılınçarslan, Şemsettin; Delikanlı, Yunus Emre; Çabuk, Mehmet

doi:10.1007/s10973-021-10781-8

Cited by 11 publications

(5 citation statements)

References 14 publications

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“…Based on previous experiments [17,18] and a short literature review [5,11,19,20], the weight ratio of the foaming agent was considered to change in three levels with a 0.5 wt% step as follows: 1 wt%, 1.5 wt%, and 2 wt%.…”

Section: Design Of Experimentsmentioning

confidence: 99%

Study on the thermal conductivity and density of foam glass

Osfouri

Simon

2022

Pollack

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This paper focuses on the relationship between the composition of foam glass and its thermal conductivity and density. In this experimental research, three levels of glass particle size and foaming agent (SiC) quantity were tested. The results showed that the thermal conductivity increased by increasing the ratio of fine glass particles. On the contrary, the thermal conductivity was not affected by changing the foaming agent weight ratio. The density of foam glass increased by decreasing the foaming agent ratio, and there was no linear relation between the size of glass particles and the density of foam glass.

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Section: Design Of Experimentsmentioning

confidence: 99%

Study on the thermal conductivity and density of foam glass

Osfouri

Simon

2022

Pollack

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“…Commercially produced foam glass is currently almost exclusively produced using carbonaceous foaming agents like soot, silicon carbide, or glycerol [1]. However, several other foaming agents have either been used in the past or their use has been studied at a laboratory scale, including AlN, TiN, MnO 2 , Mn 3 O 4 , CaCO 3 and other carbonates and sulfates [22][23][24][25]. Recently, increasing attention has focused on the use of NaOH or sodium silicates as foaming agents.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Glass-Ceramic Foam from Clay-Rich Waste Diatomaceous Earth

et al. 2022

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In this study, the potential use of waste diatomaceous earth from the production of diatomaceous earth for filtration purposes, as an alternative raw material for foam glass production, was explored. The chemical and mineralogical composition and the high temperature behavior of waste diatomite were studied to assess its suitability for foam glass production. Glass-ceramic foams were prepared using NaOH solution as a foaming agent, via a hydrate mechanism. The influence of different pretreatments and firing temperatures on the foam’s structure, bulk density and compressive strength was investigated. High temperature behavior was studied using TG/DTA analysis and high temperature microscopy. Phase composition was studied using X-ray diffraction analysis. Glass-ceramic foam samples of a high porosity comparable to conventional foam glass products were fabricated. The pretreatment temperature, foaming temperature and sintering holding time were found to have a significant influence on foam properties. With increased pretreatment temperature, pyrogenic carbon from the thermal decomposition of organic matter contained in the raw material acted as an additional foaming agent and remained partially unoxidized in prepared foams. The bulk densities of prepared samples ranged from 150 kg/m3 to 510 kg/m3 and their compressive strengths were between 140 and 1270 kPa.

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“…Such raw materials include, in particular, sewage sludge from municipal wastewater treatment plants, different coal fly ashes, and some others [1][2][3][4]. The technology of "hydrate" foaming is based on the dehydration of alkaline hydro-silicates (either formed by the interaction of NaOH with silicate raw materials or specially introduced into the mixture in the form of waterglass) and foaming of the silicate mass by the released water vapor [5][6][7][8][9][10][11][12][13]. Both of these mechanisms are currently used in laboratory studies and have not been implemented in real production.…”

Section: Introductionmentioning

confidence: 99%

“…Neutralization foaming agents include, firstly, various carbonates (CaCO 3 , MgCO 3 , Na 2 CO 3 ), including such substances as eggshells, sludge from a marble-cutting-polishing plant, reservoir sediments, etc. [12,16,[18][19][20][21][22][23][24][25][26][27][28][29]. Redox foaming agents include substances that emit gases as a result of redox reactions.…”

Section: Introductionmentioning

confidence: 99%

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Role of Carbon Phase in the Formation of Foam Glass Porous Structure

Гольцман

Yatsenko

2022

Materials

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The production of durable, non-combustible, heat-insulating materials is currently very important. One of the most promising materials is foam glass. Modern enterprises widely use organic foaming agents in foam glass production. The purpose of this work is to study the role of the carbon phase formed during the organic foaming agent’s (glycerol) thermal destruction in the processes of glass mass foaming. The samples were synthesized using the powder method with high-temperature treatment. Different ratios of glycerol and waterglass in a foaming mixture showed that amount of glycerol should be less than in waterglass. Otherwise, the amount is excessive and the glycerol burns out. It was shown that the quantitative description of the carbon phase structure and properties is complicated by its nanometer size and fusion into the glass. Theoretical calculations demonstrate that carbon particle size cannot be greater than 535 nm. Using a set of methods, it was proved that the carbon phase is represented by nanometer particles of amorphous sp2-carbon. Therefore, the foaming mechanism includes nanoparticles settling and immersing into the glass surface, a reaction of carbon with the sulfate ions from glass with a release of gases. Conclusions on foaming intensification via using sulfur additions and other organic foaming agents were drawn.

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An investigation of foaming additives and usage rates in the production of ultra-light foam glass

Cited by 11 publications

References 14 publications

Study on the thermal conductivity and density of foam glass

Study on the thermal conductivity and density of foam glass

Preparation and Characterization of Glass-Ceramic Foam from Clay-Rich Waste Diatomaceous Earth

Role of Carbon Phase in the Formation of Foam Glass Porous Structure

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