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The use of industrial waste and by-products as a partial or total replacement of raw materials for the production of new materials has become an important part of waste management, which has given rise to innovative technologies that allow its application to be extended to the development of new products, thus contributing to less environmental pollution and the concepts of the circular economy. In recent years, waste vitrification technology has been considered an interesting alternative for treating of different waste to obtain glass and glass-ceramics. This manuscript conducted a review of research related to the production of dense glass- ceramics carried out between 1994 and 2019 years. Specifically, those that have used fly ash, granulated blastfurnace slag, and glass cullet wastes. The review reveals that considerable knowledge and experience have been accumulated in the process of transformation silicate-based wastes into a useful glass and glass-ceramic products with properties similar or even superior to those obtained from non-renewable raw material, opening up new fields of application in advanced ceramics. [ABSTRACT FROM AUTHOR]

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Large quantities of waste glass are generated every year, and inappropriate disposal creates an increasing problem that needs to be addressed. This research aims to use glass waste as a partial replacement for fine aggregates in the preparation of concretes, to save natural resources and solve environmental pollution problems. Different mixes were produced by replacing fine aggregates with 5%, 10%, 15%, 20%, 25%, and 50% of waste glass. Concrete specimens of 0.15 m in diameter and 0,3 m in length were fabricated and tested in settling and compression strength. The experimental results indicated that the settling decreases with the increase of the percentage of glass. The best specimen (20% replacement) exhibited an increasing 5,5% in compressive strength. The assessment of economic and environmental aspects reveals that the same sample can provide 0,7% savings in cost and 6,4% in emitted carbon dioxide compared with traditional concrete. The results demonstrate that waste glass can replace fine aggregates to manufacture concrete. This approach offers an environmentally friendly solution to the ongoing problem of waste glass. [ABSTRACT FROM AUTHOR]

Interest to include waste glass in concrete can be ascribed to the growing need for waste disposal, as well as to minimize traditional raw material usage in concrete preparation. Glass waste has a direct effect on the properties in a fresh and hardened state; however, there are few reports that account for its effect on CO2 emissions. In this paper, a review of different reports that incorporate glass waste in replacement of aggregates or cement is presented and the estimation of CO2 emissions was made. The results show that the replacement of cement by glass waste generates a positive effect on strength and decreases carbon dioxide emissions, being greater the greater the cement replacement, a 20% reduction in CO2 emissions was found for a 20% replacement. [ABSTRACT FROM AUTHOR]

In civil construction, several types of waterproofing products based on organic components are used in order to reduce water infiltrations on the walls, coming from the subsoil. In this work, it was analyzed the incorporation of a clay and packaging glass residue based on soft drinks, a PMMA polymer, used for waterproofing in civil construction. Formulas were prepared in which a variable percentage of 0 to 40% of the packaging glass residue was added and formulas with 0 to 20% of illitic clay on a PMMA polymer matrix. Five cylindrical specimens of dimensions 75 mm in diameter and 2 mm in thickness were tested for each mold, and they were subjected to technical tests: apparent density, water absorption, retraction, hardness and scanning electron microscopy. In addition, the polymer was tested by the Fourier transform infrared spectroscopy test and its chemistry was determined by X-ray fluorescence. The constituent phases of the clay were determined by X-ray diffractometry. To assess the permeability absorption, three layers of each formulation were applied, with the aid of a brush, on a ceramic base of 11 cm x 11 cm, totaling a rate of 1 kg.m-2 in each piece, with an interval of 24h for each layer. After curing, the samples were subjected to a permeability test using an acrylic cylinder. The results of technological properties show that glass up to the limit of 10% and clay up to 20%, exhibits high hardness and apparent density, in addition to low water absorption, and reduces waterproofing in relation to the standard pattern. The product makes room for the use of inorganic materials, in addition to reducing the environmental impact caused by the disposal of glass waste in the environment. [ABSTRACT FROM AUTHOR]

Introduction: expanded polystyrene (EPS) concrete is an environmentally friendly material; however, its compressive strength is lower than traditional concrete, requiring the incorporation of materials that improve its compressive strength. This paper reports the effect of waste glass (WG) incorporation on the properties of concrete containing polystyrene as partial replacement of fine aggregate. Objective: to evaluate the effect of the incorporation of glass residues on the physical and mechanical properties of concrete made from polystyrene. Methodology: concrete was produced with 10 % by volume replacement of fine aggregate. Different EPS:WG volume ratio 1:0, 1:1, 1:2, 1:3 and 1:4 (volume EPS +WG = 10 % volume fine aggregates replacement) were prepared. The slump of fresh mixtures was evaluated, density and compressive strength of hardened concrete at 28 days was evaluated; the durability was assessed through alkali silica reaction test. Results: an increasing in glass content was inversely proportional to slump, additionally, with the incorporation of glass, the density was not significantly affected. The incorporation of waste glass greatly increases the compressive strength, being the EPS:WG 1:3 mixture that showed the highest compressive strength, which was 37.2 % higher than reference concrete (1:0) was. Additionally, in 1:3 mixture was evidenced that the addition of waste glass does not lead to deleterious alkali silica reaction effect. Conclusions: the addition of waste glass to concrete prepared from expanded polystyrene improved its mechanical properties, making it a potential system to replace traditional materials used in concrete production. [ABSTRACT FROM AUTHOR]

Copyright of Lámpsakos is the property of Fundacion Universitaria Luis Amigo, Facultad de Ingenierias and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Iteckne is the property of Universidad Santo Tomas, Division de Ingenierias and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Tecnura is the property of Tecnura and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)