Clay-bricks from recycled rock tailings |
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| Affiliation: | 1. Geology Department, Faculty of Science, Ain Shams University, Cairo-11566, Egypt;2. Geology Department, Institute of Geology and Geography, Martin-Luther University, Von Seckendorff-Platz 3, Halle (Saale)−06120, Germany;3. Institute of Materials Science, Leipzig University, Leipzig-d-04275, Germany;4. Ceramic Department, National Research Center, Dokki, Cairo-12622, Egypt;1. Department of Physics, R.T.M. Nagpur University, Nagpur 33, India;2. Department of Applied-Physics, Laxminarayn Institute of Technology, Nagpur 33, India;1. Institute of Building Materials, Vilnius Gediminas Technical University, Linkmenu 28, LT-08217 Vilnius, Lithuania;2. Department of Building Materials and Fire Safety, Vilnius Gediminas Technical University, Sauletekio 11, LT-10223 Vilnius, Lithuania;1. Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation;2. CNRS – Université de Bordeaux, Institut de Chimie de la Matière Condensée de Bordeaux, 33608 Pessac Cedex, France;3. CNRS – Université de Bordeaux, PLACAMAT UMS 3626, 33608 Pessac Cedex, France;1. Environmental Remediation and Water Pollution Chemistry Group, Department of Ecology and Resource Management, University of Venda, Private Bag x 5050, Thohoyandou 0950, South Africa;2. Department of Mining and Environmental Geology, University of Venda, Private Bag x 5050, Thohoyandou 0950, South Africa;1. Department of Civil Engineering, Adhi College of Engineering and Technology, Kanchipuram, India;2. Department of Mechanical Engineering, Adhi College of Engineering and Technology, Kanchipuram, India |
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| Abstract: | The aim of this work is to optimize the industrial applications of granite and kaolinite rock tailings in ceramics industry. Three rock tailings are selected to be characterized and equally mixed for testing. The samples are characterized using XRD, XRF, polarizing light microscope, cathodoluminescence, X-ray micro-computed tomography (3d-µCT) and SEM microscopy attached with EDAX. The rock tailings mixed batch is non-bloatable and is located in the mullite field on the FeOFe2O3-Al2O3-SiO2 phase diagram. In addition to primary mullite, type II secondary mullite of aspect ratio (3-10:1) is characteristic within aluminosilicate glassy matrix. The 3d-µCT shows pores of lower surface area at 1200 °C due mainly to the existence of isolated rounded closed pores. The physical characteristics of the fired batch, at 1200 °C show that it can be used in the manufacture of building clay-bricks. |
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| Keywords: | Rock tailings Recycling Granite Kaolinite Mullite Brick |
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