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Characteristics and Ceramic Properties of Turgutlu Clay

100%
Özkan İ.
Acta Physica Polonica A
|
2017
|
vol. 131
|
issue 1
7-9
EN
The aim of this study is to characterize and determine the ceramic properties of the Turgutlu clay fired at various temperatures. For this purpose, the clay sample was first characterized by chemical analysis, X-ray diffraction, and plasticity measurements. The mineralogical composition of the Turgutlu clay was dominated by quartz, illite, mica, hematite, calcite, kaolinite, microcline, and smectite. The data obtained from plasticity tests indicated that the Turgutlu clay was very high plastic clay. To evaluate firing behaviors, pressed clay samples were fired separately at temperatures between 850 and 1100°C. Fired specimens were evaluated by water absorption, linear shrinkage, bulk density, flexural strength, X-ray diffraction, and scanning electron microscopy. Significant changes were observed such as an increase in the linear shrinkage and flexural strength together with a decrease in the water absorption above 1050°C. Based on the technological characteristics, the Turgutlu clay could be used in the manufacture of structural ceramics.
2
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Utilization of Bigadiç Boron Works Waste Clay in Wall Tile Production

100%
Özkan İ.
Acta Physica Polonica A
|
2017
|
vol. 132
|
issue 3
427-429
EN
The investigations on the use of the alternative raw materials have been always popular in the ceramic tile production. Manufacturers have been interested in this subject for both increasing product quality and decreasing production costs. In this research the Bigadiç boron works waste clay was utilized as an alternative raw material. Boron works waste clay was characterized by chemical and X-ray diffraction analyses. Ceramic characteristics were determined from pressed bodies, using four elevated firing temperatures (1040, 1060, 1080, and 1100°C) for samples with 5, 10, 15, and 20 wt% boron works waste clay additions to a commercial wall-tile batch. The physical properties of the fired tiles were evaluated in terms of water absorption, linear shrinkage, and flexural strength. Microstructural observations were performed by scanning electron microscopy analyses. Based on the technological characteristics of the resulting ceramic material, the results were discussed.
3
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Production of Sodium Silicate Cullets by Using Trona

100%
Özkan İ.
Acta Physica Polonica A
|
2016
|
vol. 129
|
issue 4
451-454
EN
This study focuses on production and characterization of sodium silicate cullet by using trona. Sodium silicate cullets are generally produced by direct fusion of precisely measured portions of soda ash (Na₂CO₃) and quartz (SiO₂). In this study trona (Na₂CO₃· NaHCO₃· 2H₂O) was used as a source of soda ash. For this purpose trona sample was first characterized by X-ray diffraction, scanning electron microscopy, differential thermal analysis/thermal gravimetry and chemical analyses. Different batches were prepared and fused to produce sodium silicates varying in ratio Na₂O· nSiO₂. Produced samples were evaluated by X-ray diffraction and scanning electron microscopy. The results showed that trona can be used instead of soda ash to produce sodium silicate cullets.
4
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Recycling of Coal Ash in Production of Low Density Masonry Unit

51%
Özgül N., Savaşçin M., Özkan İ.
Acta Physica Polonica A
|
2017
|
vol. 132
|
issue 3
430-432
EN
Coal ash is a residue that is created when coal is burned by power plants to produce electricity. Coal ash is one of the largest types of industrial waste and causes environmental pollution. On the other hand, coal ash is potentially a valuable source of minerals, including SiO₂, Al₂O₃, CaO, MgO, Fe₂O₃, Na₂O and K₂O. This study aims to recycle the coal ash in production of low density masonry unit. Coal ash was characterized by chemical and X-ray diffraction analyses. The batches containing different ratios of coal ash and a brick making clay were prepared and shaped by cold pressing. The pressed samples were fired at 1050 and 1100°C. The physical properties such as water absorption, apparent porosity, linear shrinkage, and bulk density were determined. Microstructural observations were performed by using scanning electron microscopy. Based on the technological characteristics; it was observed that low density masonry units can be produced by using coal ash. This study supports the responsible recycling of coal ash by distinguishing beneficial use from disposal.
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