Characteristics of clays and properties of building ceramics in the state of Rio de Janeiro, Brazil

Vieira, Carlos Maurício Fontes; Sánchez, R.; Monteiro, S. N.

doi:10.1016/j.conbuildmat.2007.01.006

Cited by 108 publications

(57 citation statements)

References 4 publications

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“…The chemical analysis of raw moldier shows that the major elements are SiO 2 and Al 2 O 3 , which are both associated with the kaolinite structure [15].…”

Section: Chemical Analysismentioning

confidence: 99%

Characterization of Tataouines Raw and Activated Clay

Hattab¹

2013

J Chem Eng Process Technol

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This study deals with the mineralogical and thermal analysis of red clay taken from the south of Tunisia (Tataouine area) which will be used in industrial and environmental fields. In that purpose the study had recourse to several quantitative and qualitative research instruments: chemical analysis, mineralogical study and thermal analysis. The analyses were carried out by different methods such as: (i) X-ray diffraction (XRD), (ii) infrared spectroscopy (IR), (iii) thermogravimetric analysis (TGA), (iv) differential thermal analysis (DTA) and (v) cation exchange capacity (CEC). The data collected from these techniques show that illite and kaolinite are the major clay phases. The accessory minerals detected in powdered rock is calcite.The raw clay has undergone an acid activation using the sulfuric acid. The acid activation of south of Tunisia clay increase the specific surface area by adsorption of methylene blue from 117 m 2 /g to 163 m 2 /g. The experimental investigation is performed in accordance with the methodology of the factorial design of experiments. The different factors or parameters used in this methodology are: the temperature (T), the contact time (t), the liquid/solid ratio (R), and the acid concentration (C). The optimal conditions, obtained by the statistically designed experiments, for the best results of methylene blue adsorption were: 60 °C, a contact time of 1.5 h, a liquid/solid ratio of 7 and acid concentration of 20%. These parameters are applied in the preparation of the sample used in characterization study. The effect of the reaction conditions on the solid structure is investigated by comparison with the raw clay sample.

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“…The chemical analysis of raw moldier shows that the major elements are SiO 2 and Al 2 O 3 , which are both associated with the kaolinite structure [15].…”

Section: Chemical Analysismentioning

confidence: 99%

Characterization of Tataouines Raw and Activated Clay

Hattab¹

2013

J Chem Eng Process Technol

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“…The first 1.5% decrease in the mass occurred in between 50 and 100 8C due to the evaporation of physical water. The second (0.5%) and third (1.5%) weight losses were observed between 200-300 and 350-500 8C ranges which may be due to the burning of organic matter and the removal of chemical water [21]. The larger weight loss (2%) was detected in between 500 and 700 8C range and smaller reaction at about 850-900 8C which is related with the dehydroxylation of illite and clinochlore mineral [22].…”

Section: Thermal Behaviour Of Raw Materialsmentioning

confidence: 99%

The use of recycled paper processing residues in making porous brick with reduced thermal conductivity

Sütçü

Akkurt

2009

Ceramics International

314

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“…The presence of fine sand, 20-200 µm, is of 20 wt%. Vieira et al [15] have studied the characteristics of clays and properties of building ceramics in the state of Rio de Janeiro, Brazil and reported that the clay fraction is associated with very fine clay minerals that are mainly responsible for the plasticity of clay materials. According to Fig.…”

Section: Resultsmentioning

confidence: 99%

“…4. According to Vieira et al [15], for practical purposes the plasticity index must be above 10% and if it is < 10%, it is not appropriate for the production of clay-based materials due to the risk problems during the extrusion process. From Fig.…”

Section: Resultsmentioning

confidence: 99%

Effect of Incorporation of Granite and Marble Rejects in Clay Brick Products: Physico-Mechanical Analysis

et al. 2010

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The objective of this work is to characterize and evaluate the effect of incorporation of granite and marble rejects on the properties and microstructure development of three different clay materials used to fabricate brick materials in the brick industry. The raw materials are characterized with respect to their chemical composition by X-ray fluorescence, particle size distribution and mineralogical composition by X-ray diffraction and plasticity.Compositions have been prepared with additions of 0, 10, 20, 30, 40 and 50 wt% reject in three different clay material from Tamilnadu State, India, and fired at temperatures from 500 to 900• C in laboratory furnace. The behaviour of mixtures containing 80 wt% clay material +20 wt% reject is discussed in detail. The technological properties of briquette specimens such as flexural rupture strength, water absorption, porosity and bulk density were determined. The microstructure of the fired briquette specimens were observed by scanning electron microscopy with energy dispersive X-ray spectrometry, Mössbauer spectroscopy. The results of the above studies show that incorporations of granite and marble rejects up to 50 wt% is potential to the industrial clay brick products, with no major sacrifice on the properties of the final product, anticipating no costly modifications in the industrial production line.

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Characteristics of clays and properties of building ceramics in the state of Rio de Janeiro, Brazil

Cited by 108 publications

References 4 publications

Characterization of Tataouines Raw and Activated Clay

Characterization of Tataouines Raw and Activated Clay

The use of recycled paper processing residues in making porous brick with reduced thermal conductivity

Effect of Incorporation of Granite and Marble Rejects in Clay Brick Products: Physico-Mechanical Analysis

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