Comparison of strength and durability characteristics of a geopolymer produced from fly ash, ground glass fiber and glass powder

Rashidian-Dezfouli, Hassan; Rangaraju, Prasada Rao

doi:10.3989/mc.2017.05416

Cited by 36 publications

(12 citation statements)

References 45 publications

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“…In [6] is confirmed that there is a potential for lowering the costs associated with the alkaline activator that can also contribute to recycling more waste materials. Furthemore [7,8] investigated the potential for recycling waste glass as a partial replacement material for the alkali-activator, and found that soluble silica from the waste glass formed part of the gel in the geopolymerisation reaction.…”

Section: Ricon19 -Remine International Conferencementioning

confidence: 99%

Low Temperature Glass Sintering Based on Silico Sodium Resins

Sáez-Pérez

Martínez-Ramirez

DuránSuárez

et al. 2020

KEG

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By using silicate inorganic binders and glass waste it is possible to mould technical and artistic elements which later can be compacted by means of low temperature, and subsequently apply the sintering through high-temperature processing, which is generally lower than current melting glass processes, close to 1250 °C. The experimental phase established thermal ranges from 600°C to 750°C, a fact that allows for an effective sintering temperature (of around 650°C/18 hours). The mixtures and proportions for this experiment were fixed including ethyl silicate as a fluidizer in mixtures,as well as the size of glass grains.The results indicate good compaction of the samples after the initial phase (80°C/24h), allowing proper handling without alterations in samples edges.During heating treatment, mechanical resistance increases gradually (600-750°C), although the volume of porosity was inversely proportional. According to the matrix vs grain size relationship, the partial fusion of both materials is evident in the rounding of the glass grains as well as the resin bonds joined between them. The resins appeared in a homogenous fashion, covering and gluing the grains, a development which improves the joining of sintered samples. Samples with a mixture of sodium silicate and ethyl silicate resins experienced less melting between grains due to a lower volume of fluxing elements, which means a lower percentage volume of sodium (Na). This study concludes that a sintering process for new vitreous composites could be carried out between 650°C and 700°C, offering the opportunity for a substantial reduction in the amount of energy required to produce industrial glass. Keywords: Water-glass, glass recycling, low temperature

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Section: Ricon19 -Remine International Conferencementioning

confidence: 99%

Low Temperature Glass Sintering Based on Silico Sodium Resins

Sáez-Pérez

Martínez-Ramirez

DuránSuárez

et al. 2020

KEG

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“…Many studies explore the performance of RAC with fly ash (34)(35)(36)(37)(38)(39)(40). These investigations depicted that the effect of fly ash in RAC was superior to that in natural aggregate concrete (NAC).…”

Section: Introductionmentioning

confidence: 99%

Influence of fly ash, glass fibers and wastewater on production of recycled aggregate concrete

et al. 2021

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To encounter the issues of waste materials, low tensile strength of concrete and environmental impacts of cement production, research is needed to develop a sustainable concrete. This study has endeavored to investigate the effects of using recycled coarse aggregates (RCA), various types of wastewater effluents, fly ash, and glass fibers on the mechanical and durability behavior of recycled aggregate concrete (RAC) incorporating with fly ash and glass fibers (FGRAC). Six different kinds of wastewater effluents for the mixing of concrete, 100% replacing the natural coarse aggregates with RCA, and 30% replacement of cement with fly ash were used for the development of concrete. The experimental measurement portrayed that the textile factory effluent presented the highest compressive and tensile strengths of concrete. Fertilizer factory effluent portrayed the highest water absorption, mass loss due to acid attack, and chloride penetration to concrete.

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“…reduction of the so-called carbon footprint for a given product, reduction of CO2 emission, the use of natural fibres as a reinforcement material in geopolymer composites is beneficial [13]. Fibres have many beneficial features: reproducibility of raw material from annual plants which have a short vegetation cycle [14], low production costs, in comparison to chemical fibres [15,16], low density [17], high specific strength [18], non-toxic to humans and harmless to the environment [19], easy to process and have low production cost" [13]. These features make them popular as reinforcements in various types of composites, including plastics and concrete [20].…”

Section: Introductionmentioning

confidence: 99%

The Fly-Ash Based Geopolymer Composites as an Innovative Material for Circular

et al. 2020

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A circular economy is the answer to the problem of wasting raw materials and increasing environmental pollution. It is based on the effective use of materials - from extraction, through use, to the way of managing waste. Analyzing the impact of particular industries on the production of pollution, it can be concluded that the construction is one of such industries. In order to reduce the negative impact of the construction on the environment resulting from energy consumption and large amounts of generated waste, various researches are carried out on modern and innovative materials production solutions. One of the possibilities is a production technology based on the alkaline-activated compositions and geopolymers. The advantage of this technology is that it has a much lower carbon footprint compared to the traditional production methods used in construction - during the synthesis of geopolymers the emission of CO2 is 4-8 times lower and also the energy consumption is reduced up to 2-3 times. This article shows the possibility of using the industrial and mining waste for creating new eco-friendly materials – geopolymers. The paper presents the results of studies on geopolymer composites reinforced with addition of 1% by weight of different types of natural fibers i.e.: short hemp fibres, raw flax fibres (shortened), long flax fibres (stannous) and linseed cotonin. The paper showed that geopolymer composites can be successfully produced with the addition of natural fibres (often waste) and have good strength parameters even after long-term use.

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Comparison of strength and durability characteristics of a geopolymer produced from fly ash, ground glass fiber and glass powder

Cited by 36 publications

References 45 publications

Low Temperature Glass Sintering Based on Silico Sodium Resins

Low Temperature Glass Sintering Based on Silico Sodium Resins

Influence of fly ash, glass fibers and wastewater on production of recycled aggregate concrete

The Fly-Ash Based Geopolymer Composites as an Innovative Material for Circular

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