Using ornamental stone cutting rejects as raw materials for red clay ceramic products: Properties and microstructure development
authors Acchar, W; Vieira, FA; Segadaes, AM
nationality International
journal MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
author keywords granite reject; marble reject; clays; microstructure
keywords GRANITE REJECTS; WASTES
abstract The incorporation of various wastes in red clay-based ceramic products has been widely investigated, frequently with the aim of reducing the waste environmental impact. This work explores the not so obvious waste potentialities and describes the properties and microstructure development in a natural clay showing large processing limitations, upon the addition of two different ornamental stone Cutting rejects, granite and marble + granite. All materials were collected at industrial sites and the behavior of mixtures containing 70 wt.% clay + 30 wt.% reject is detailed. Powder samples were uniaxially pressed under 20 MPa, sintered in air in an electric furnace for 2 h at a temperature in the range 950-1150 degrees C, and characterized. The experimental results obtained (firing shrinkage, porosity, flexural strength, microstructure) show that the rejects can be used to replace traditional fluxing agents, helping the sintering process, and simultaneously control the plasticity and shrinkage of an otherwise unusable clay, with obvious economical and environmental benefits. (c) 2006 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE SA
issn 0921-5093
year published 2006
volume 435
beginning page 606
ending page 610
digital object identifier (doi) 10.1016/j.msea.2006.07.091
web of science category Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000241683200081
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journal analysis (jcr 2019):
journal impact factor 4.652
5 year journal impact factor 4.58
category normalized journal impact factor percentile 76.682
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