Alkali-silica reactivity of foam glass granules in structure of lightweight concrete

Būmanis, Ģirts; Bajāre, Diāna; Ločs, Jānis; Korjakins, Aleksandrs

doi:10.1016/j.conbuildmat.2013.05.049

Cited by 55 publications

(32 citation statements)

References 9 publications

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“…Granular AM with an increased amount of SiO2 has more expressive glassy phase, which is detected by XRD patterns with different SiO2 content; the broad peak, which was shifted to 28° 2θ after alkali activation of metakaolin, has higher intensity with increase of SiO2 content which indicates amorphous material structure [10]. However high water absorption could still be obtained for such material, which is similar to foam glass granules also created from waste glass.…”

Section: Introduction *mentioning

confidence: 83%

The Effect of Alkaline Material Particle Size on Adjustment Ability of Buffer Capacity

Būmanis

2015

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The pH control in biotechnological processes like anaerobic digestion is one of the key factors to ensure high efficiency in the biogas production process. The decrease of pH level in the digestion process occurs due to the rapid acid formation during metabolic processes of bacteria, which leads to the inhibition of the methane producing bacteria; therefore further digestion process is limited. The efficiency of anaerobic digestion reactor decreases dramatically if the pH level falls under pH 6.6. This problem is common for single-stage continuous digesters with a high organic solid content; therefore the active pH controlling method is commonly used. By creating inorganic alkaline material, the passive pH controlling system could be created. Soluble alkalis are enclosed in the matrix of material during the activation process thus providing slow leaching of free alkalis from the material structure in water medium and ensuring pH increase. In this research a porous alkaline composite material was developed as a pH controlling agent for the biogas production. Two mixture compositions with a different Si/Al and Si/Na ratio were created and tested. The effect of particle size of the material was investigated in order to provide different leaching rates for the described material. Granular material with particle fractions 1 -2 mm, 2 -4 mm and 4 -8 mm and a cubical specimen with dimensions 20 × 20 × 20 mm were tested. The pH level of water medium increased up to pH 11.6 during the first day and final pH value decreased to 7.8 after 20-day leaching. Alkali leaching can be increased by 19 -32 % with changing the mixture composition by adding glass powder to the alkaline material. The particle size factor had negligible effect on leaching rate of alkaline material due to the high porosity of material. Research results show that this composite material has a potential to be applied in pH control for biotechnological purposes.

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Section: Introduction *mentioning

confidence: 83%

The Effect of Alkaline Material Particle Size on Adjustment Ability of Buffer Capacity

Būmanis

2015

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“…[153][154][155][156] Various studies have analyzed the use of CWG in other glass-based products in civil engineering. CWG, obtained from bottle waste, was used in the preparation of GFG.…”

Section: Glass-based Productsmentioning

confidence: 99%

“…Similar findings were also observed in other studies, indicating that the use of foam glass could adversely affect the properties of lightweight concrete due to ASR expansion. [153][154][155][156] Various studies have analyzed the use of CWG in other glass-based products in civil engineering. Fan and Li 157 studied the behavior of insulating glass-ceramics composed of CWG, obtained from a thin film transistor-liquid crystal display (TFT-LCD), using ceramization and vitrification processes.…”

Section: Glass-based Productsmentioning

confidence: 99%

Waste glass in civil engineering applications—A review

Kazmi

Williams

Serati

2019

Int J Applied Ceramic Tech

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Each year, hundreds of thousands of tons of industrial wastes are being stockpiled, landfilled, and disposed of in storages occupying large areas of land that would otherwise be available for productive use. Recycling of such wastes is now becoming of urgent global interest due to an increasing population, the rise in anthropogenic activities, and the need for more efficient resource and waste management systems.Among many wastes, the generation of glass is dramatically increasing, particularly in the municipal, industrial, and construction sectors. In civil engineering, in general, crushed waste glass has been mainly investigated as a substitute for sand and finegrained aggregate in concrete production. In geotechnical engineering, in particular, the application of glass wastes is mainly limited to road pavements or as an additive to different soils for subgrade improvement. While glass wastes are relatively inert and potentially offer several opportunities for recycling as a substitute for diminishing and increasingly expensive sand supplies, their potential use yet remains relatively under-researched. This paper systematically reviews the current status of knowledge on the use of glass wastes in various civil engineering applications and discusses the suitability assessment of waste glass for use as a sustainable alternative to traditional civil engineering materials. K E Y W O R D Saggregate, concrete, recycling, sand, waste glass, waste management

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“…In this context, glass-based cellular materials have been developed with promising results for structural and insulating applications. 25,26 Life Cycle Assessment has been effectively used to highlight and quantify the eco-efficiency of glass waste recycling chain by identifying engineering solutions for sustainability thanks to the development of new products to be used in energy buildings efficiency. 27,28 However, the use of recycled glass to produce lightweight cellular foams is still not yet mature to make its use costeffective as a lightweight aggregate construction material.…”

Section: Introductionmentioning

confidence: 99%

Micro‐tomographic characterization of composite recycled glass‐silicone foams for applications in civil engineering

Calabrese

Scalici

Khaskhoussi

et al. 2019

J of Applied Polymer Sci

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Noninvasive X‐ray micro‐computed tomography was applied for a complete quantitative and qualitative analysis of the cellular structure of composite foams constituted by a silicone matrix and a glass production waste filler. Composite foams with different glass filler weight content in the range 0–80% were synthesized and characterized. The tomographic analysis was employed in order to assess the structural heterogeneities, void fraction values, and bubble size distribution for all composite foams. The 3D micro‐CT images analysis, performed at different cross‐sections, highlighted heterogeneous cell growth or more elongated cells in the case of low and high filler content foams, respectively. Batch with 60% of glass filler was identified as a composite foam with effective void fraction values and relatively uniform spheroidal cellular structure (average sphericity 0.723 and diameter 0.107 mm). © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48718.

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Alkali-silica reactivity of foam glass granules in structure of lightweight concrete

Cited by 55 publications

References 9 publications

The Effect of Alkaline Material Particle Size on Adjustment Ability of Buffer Capacity

The Effect of Alkaline Material Particle Size on Adjustment Ability of Buffer Capacity

Waste glass in civil engineering applications—A review

Micro‐tomographic characterization of composite recycled glass‐silicone foams for applications in civil engineering

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