Mechanical Properties of Concrete Mortar Based on Mixture of CRT Glass Cullet and Fluidized Fly Ash

Walczak, Paweł; Małolepszy, Jan; Reben, M.; Rzepa, Karol

doi:10.1016/j.proeng.2015.06.170

Cited by 44 publications

(31 citation statements)

References 13 publications

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“…The glaze 7 prepared contains 50% of vitreous fraction, substituted only by CRT glass. The glaze appeared to be matt, thus to obtain glossy glaze the second group of glaze compositions was designed (10)(11)(12)(13)(14). The glaze 14 prepared contains 85 wt.…”

Section: Resultsmentioning

confidence: 99%

“…Various different compositions of glasses used for CRT create obstacles to the increased recovery the glass [12]. Moreover the specific glass composition forbid their recycling in the glass industry for the production of containers, domestic glassware and glass fibers, if crushed and mixed together it cannot be even recycled as cullet, for TV glass, on the other hand there are no manufactures of CRT glass in Europe anymore [13]. The use of CRT cullet as a replacement of float glass and feldspar in glazes production will be a very promising initiative as it will strongly contribute to sustainable development of ceramics industries.…”

Section: Introductionmentioning

confidence: 99%

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Waste immobilization and environmental sustainability in glass-ceramics glazes development

et al. 2016

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Waste immobilization and environmental sustainability in glass-ceramics glazes development

et al. 2016

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“…According to Maschio et al [4], the crushing of the glass to about the particle size of cement (micro-scale) can contribute to the forming of calcium silicate hydrate (C-S-H) gel, which enables the improvement of concrete strength. Besides that, past studies indicated that the crushing of glass into a size smaller than 4.75 mm for use as a fine aggregate at various percentage replacements up to 100% has shown that the strength exceeds the control sample [4], [7], [10], [11]. The increase in concrete strength may be attributed to the shape of glass that has angular grain shape than sand [10].…”

Section: Introductionmentioning

confidence: 99%

A Study of the Replacement of Natural Coarse Aggregate by Spherically-Shaped and Crushed Waste Cathode Ray Tube Glass in Concrete

Pauzi¹,

Karim²,

Jamil³

et al. 2020

JCM

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The aim of this study is to conduct an experimental investigation on the influence of complete replacement of natural coarse aggregate with spherically-shape and crushed waste cathode ray tube (CRT) glass to the aspect of workability, density, and compressive strength of the concrete. After characterizing the glass, a group of concrete mixes was prepared to contain a 40% spherical CRT glass and 60% crushed CRT glass as a complete (100%) replacement of natural coarse aggregates. From a total of 16 types of concrete mixes, the optimum proportion was selected based on its best performance. The test results showed that the use of spherical and crushed glass that possesses a smooth surface, rounded, irregular and elongated shape, and low water absorption affects the workability of concrete. Due to a higher specific gravity of crushed glass, concrete mixes containing CRT glass had a higher density compared to ordinary concrete. Despite the spherical and crushed CRT glass being stronger than gravel, the results revealed a reduction in compressive strength of the concrete. However, using a lower water to binder (w/b) ratio and a higher superplasticizer (SP) dosage, it is found to enhance the compressive strength of 60.97 MPa at 28 days that is lower by 13% than the control specimen. These findings indicate that waste CRT glass in the form of spherical and crushed could be used as an alternative of coarse aggregate that may pave the way for the disposal of hazardous e-waste.

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“…ough concrete suffered from sulfate attack, it drops the freezing point of the pore solution [21]. Adding fly ash into concrete could optimize the microstructure to a certain extent [22,23]; according to Yazıcı [24], FA has a positive effect on the mechanical properties, freeze-thaw properties, and chloride penetration resistance of concrete, whereas Li et al [12] argued that cement-based materials mixed with high-content FA produce adverse effects on compressive strength. In fact, it is not clear how much the dosage of fly ash and sodium sulfate solution is beneficial for improving deterioration resistance of concrete exposed to combined freeze-thaw cycles and sulfate attack.…”

Section: Introductionmentioning

confidence: 99%

Damage and Degradation of Concrete under Coupling Action of Freeze‐Thaw Cycle and Sulfate Attack

Tian

Gao

2020

Advances in Materials Science and Engineering

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In this study, the mechanical behaviors, failure characteristics, and microstructure of concrete containing fly ash (FA) against combined freeze-thaw cycles and sulfate attack were studied compared with normal concrete, and the formation rates of corrosion products during coupling cycles were investigated. Results showed that, during the coupling action of freeze-thaw cycles and sodium sulfate solution, concrete containing 10% fly ash exposed in 5% sodium sulfate solution exhibited better freeze-thaw resistance. Meanwhile, the variation of compressive strength of concrete during the coupling cycles could be divided into two stages, including the strength enhancement stage and the strength reduction stage. Moreover, the proportion of micropores and capillary pores decreased obviously during combined freeze-thaw cycles and sulfate attack, and excessive concentration of sodium sulfate solution led to more macropores after high-frequency freeze-thaw cycles.

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Mechanical Properties of Concrete Mortar Based on Mixture of CRT Glass Cullet and Fluidized Fly Ash

Cited by 44 publications

References 13 publications

Waste immobilization and environmental sustainability in glass-ceramics glazes development

Waste immobilization and environmental sustainability in glass-ceramics glazes development

A Study of the Replacement of Natural Coarse Aggregate by Spherically-Shaped and Crushed Waste Cathode Ray Tube Glass in Concrete

Damage and Degradation of Concrete under Coupling Action of Freeze‐Thaw Cycle and Sulfate Attack

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