Water and waterglass mixtures for foam glass production

Hesky, Daniela; Aneziris, Christos G.; Groß, Ulrich; Horn, Anja

doi:10.1016/j.ceramint.2015.06.088

Cited by 54 publications

(32 citation statements)

References 15 publications

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“…10 European Union produces about 900,000 tonnes of glass wastes every year. [18][19][20][21][22][23] In addition, some alternative methods are also used to fabricate glass foams. From this perspective, glass foams provide an ideal way for recycling waste glass, because fabrication of glass foams has no stringent requirement for glass composition.…”

Section: Introductionmentioning

confidence: 99%

“…There are many studies focusing on foaming agents and these foaming agents typically include calcium carbonate, magnesium carbonate, sodium sulfate, sodium silicate, dolomite, carbon powder and carborundum, etc. [18][19][20][21][22][23] In addition, some alternative methods are also used to fabricate glass foams. Jang et al 24 fabricated glass foams with porosity in the range of 42%~62% by sintering hollow glass spheres.…”

Section: Introductionmentioning

confidence: 99%

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A novel fabrication method for glass foams with small pore size and controllable pore structure

Huo

Yan

et al. 2017

J Am Ceram Soc

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In this paper, a novel fabrication method for glass foams has been introduced based on colloidal suspension foaming method using waste glass as starting materials. It is demonstrated for the first time that foam stabilization via in‐situ hydrophobization of waste glass particles is possible. The fabrication conditions for stable glass particle‐stabilized foams are optimized by investigating the influences of pH value, concentration of propyl gallate and ball milling time, respectively. It is demonstrated that this is a versatile method for fabrication of stable foamed glass suspension and final glass foams with small pore size of dozens of microns, which is much smaller than that of most glass foams in previous literatures. This novel method enables both closed pore structure and open pore structure simply by tailoring solid loading of glass suspension. A “sieve‐like” hierarchical pore structure can be achieved by adjusting sintering temperature. The glass foams with controllable structure could be applied in thermal insulation fields for closed pores, and in catalyst loading, filtration, and separation fields for open pores and hierarchical pore structure.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel fabrication method for glass foams with small pore size and controllable pore structure

Huo

Yan

et al. 2017

J Am Ceram Soc

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“…Uneven holes and pores were seen in cured P‐0 (Figure A), and the porosity was 28%. The high porosity was closely related to the water content in the pastes . In most case, the water content in the pastes significantly exceeds the quantities reacting with the binders during binder activation, so surplus water leaves the system by evaporation and creates comparable porosity.…”

Section: Resultsmentioning

confidence: 99%

“…The high porosity was closely related to the water content in the pastes. 1,26 In most case, the water content in the pastes significantly exceeds the quantities reacting with the binders during binder activation, so surplus water leaves the system by evaporation and creates comparable porosity. Figure 2B shows the microstructure of cured P-6Si, which was loose and porous with predominantly The larger porosity than that of P-0 was related to Si addition.…”

Section: Shrinkage-reducing Mechanismsmentioning

confidence: 99%

Influence of expansion admixtures on the properties of water‐glass‐based refractory pastes

Tao

Wang

Ren

et al. 2017

Int J Applied Ceramic Tech

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Water‐glass‐based pastes show good prospect for high‐temperature applications, but they are subject to substantial dry‐shrinkage. Silicon and aluminum powders were added to prevent the dry‐shrinkage. The influence of them on compressive strength, bonding strength and volume of the pastes was discussed. SEM, XRD, and TG/DSC were employed to study the influencing mechanisms. The results show that Si and Al effectively prevented the dry‐shrinkage; Al improved compressive strength and bonding strength, while Si was bad for bonding strength. When Al dosage was 6%, the pastes presented mild expansion of 1.05%, the compressive strength increased by 8.9%, and the bonding strength by 33.4%.

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“…It was found that hydrated polysilicates are foamed in the process of heat treatment by steam emission [22,23]. Cellular glass, or foamed glass, has been obtained as a result of heating polysilicates up to 700-800 • C.…”

Section: Discussionmentioning

confidence: 99%

Rice Hulls as a Renewable Complex Material Resource

et al. 2018

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As a result of rice grain processing, a big amount of waste (up to 20%) is produced. It is mainly rice hulls. The main components of rice hulls are cellulose, lignin and mineral ash. The mineral ash quantity in rice hulls varies from 15 up to 20%, by weight of the rice hulls. The mineral ash consists of amorphous silica (opal-type). Due to the high content of silica in rice hulls, the material burns with difficulty under natural conditions, and it is biodegradably destroyed only with difficulty, when composted. Utilization of rice hulls then becomes an ecological problem due to huge rice production and its continuous growth. At the same time, the annual quantity of silica content in rice hulls is comparable with the quantity of amorphous silica produced as a mineral resource. The issue of manufacturing cellular glass silica construction materials from rice hulls as a renewable resource is discussed in this paper. The utilization technology is based on an amorphous silicon oxide with the use of energy from the combustion of the organic component of rice hulls.

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Water and waterglass mixtures for foam glass production

Cited by 54 publications

References 15 publications

A novel fabrication method for glass foams with small pore size and controllable pore structure

A novel fabrication method for glass foams with small pore size and controllable pore structure

Influence of expansion admixtures on the properties of water‐glass‐based refractory pastes

Rice Hulls as a Renewable Complex Material Resource

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