The influence of clay composition and lithology on the industrial potential of earthenware

Idrissi, Hicham El Boudour El; Daoudi, Lahcen; Ouahabi, Meriam El; Collin, Frèdèric; Fagel, Nathalie

doi:10.1016/j.conbuildmat.2018.04.019

Cited by 18 publications

(11 citation statements)

References 30 publications

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“…The suitability of raw clay deposits for ceramics applications is determined by their physical properties, mineralogy and chemistry (El Ouahabi et al , 2014b; Lisboa et al , 2016; Baghdad et al , 2017; Kharbish & Farhat, 2017; El Boudour El Idrissi et al , 2018). The bulk mineralogical association of the samples studied and the dominance of illite in their clay fractions classify these marls as common clays (Murray, 2007; Keith & Murray, 2009) and endow them with suitable ceramics properties (Ferrari & Gualtieri, 2006; Wattanasiriwech et al , 2009; Baghdad et al , 2017; Mahmoudi et al , 2017).…”

Section: Discussionmentioning

confidence: 99%

Characterization of Neogene marls from the Kert Basin (northeast Morocco): suitability for the ceramics industry

et al. 2019

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The Neogene marls from the lower Kert area (northeast Morocco) were characterized to evaluate their suitability for the ceramics industry. Two cross-sections involving all of the Neogene facies were studied on both banks of the Kert River. Grey and green marls occurring between sandstone and tuffs were characterized by mineralogical (X-ray diffraction) and physicochemical (grain size, Atterberg limits, X-ray fluorescence and specific surface area) analyses. The Neogene clays studied are mainly calcareous silty marls containing 13–20 wt.% calcite. They consist of quartz, calcite, feldspars, dolomite, illite, kaolinite, chlorite and 10–14 Å illite-vermiculite mixed layers. Cristobalite was detected only in the uppermost level of the green marls, and it originates from a volcanic ash of Messinian age. Trace amounts of siderite and rhodochrosite indicate reducing or locally oxidizing conditions during sedimentation or shortly thereafter. The marls have medium to high plasticity, making them optimal for extrusion. Raw Neogene marls are suitable for manufacturing structural clay products. More specific uses, such as hollow products, roofing tiles and masonry bricks, were supported by the geochemical results and grain-size distribution.

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Section: Discussionmentioning

confidence: 99%

Characterization of Neogene marls from the Kert Basin (northeast Morocco): suitability for the ceramics industry

et al. 2019

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“…Large choice of clays is present in Mzouda site, the potters try to mix the plastic raw material with the non-plastic one. The argillites show various degree of diagenesis from one site to another and this affect their plasticity degree (Idrissi et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

“…The used methods for X-ray diffraction, X-ray fluorescence spectroscopy and particles size distribution are described in Idrissi et al, (2018). The Atterberg limits was carried out on the fraction of the material passing through the 425µ sieve.…”

Section: Methodsmentioning

confidence: 99%

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Main parameters influencing the plastic behavior of clays used for traditional ceramics production

Idrissi¹

2021

Preprint

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This paper investigates the main parameters influencing the plastic behavior of clays used for traditional ceramics production. For this, twenty-six clayey pastes were selected from twelve traditional ceramic plants around the city of Marrakech (Morocco). According to the lithology, six different types of materials are used as raw material in the ceramic industry of this region. Emphasis is placed on the impact of the characteristics of these clayey materials upon the plastic behavior of these clays. The pastes were characterized through their consistency using the Atterberg limits. It has been concluded that the gain size, the mineralogical and the clay mineral composition and content, the effect of diagenesis and the presence of talc-pyrophyllite association play the most important role in the control of the plasticity behavior.

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“…The latter three The mineralogical constituents of ceramic pastes ranged from clay minerals as plastic and binder components to siliceous sand as skeletal components and finally feldspars and/or fine carbonates as fluxing agents. During the firing process, the main constituents of raw clay underwent phase transformations through decomposition to produce neo-mineralization, like metakaolinite and spinel at about 900 • C [11], as well as mullite, cristobalite, and wollastonite at higher temperatures [36,37]. The presence of smectite in the studied raw materials was expected to increase plasticity and impact the drying and swelling behavior and fired strength of the finished product.…”

Section: Mineralogical Compositionmentioning

confidence: 99%

Composition and Technological Properties of Clays for Structural Ceramics in Limpopo (South Africa)

Diko-Makia

Ligege

2020

Minerals

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This study evaluated the potential of raw clays from the Mukondeni region for structural ceramics and pottery based on traditional firing techniques. Physical properties were identified by particle size distribution, consistency limits, and clay activity. Mineralogical and chemical properties were investigated by X-ray diffraction (XRD) and X-ray fluorescence (XRF). Extruded clay bodies were fired at 900 °C. Technological characteristics were measured by weight loss (WL), bulk density (BD), dry linear shrinkage (DLS), fired linear shrinkage (FLS), water absorption (WA), and flexural strength (FS). The clays were low in <2 µm fractions (≤19%) and of medium to high plasticity with a clayey silt texture. Smectite was the dominant clay mineral while quartz and feldspar were major non clay minerals. The most abundant oxides were SiO2 (63.57–68.73%), Al2O3 (13.9–15.61%), and Fe2O3 (4.86–6.18%), whereas K2O, CaO, MgO, Na2O, TiO2, and P2O5 were depleted. Characterization based on the clay workability chart, Winkler’s diagram, and compositional ternary diagrams revealed acceptable extrusion properties and suitability for structural ceramics and earthenware. The clays showed acceptable WL, BD, LS, and WA, but unsatisfactory FS (≤1.08 MPa). Low mechanical strength was attributed to presence of smectites and inert nature of feldspar at 900 °C. Beneficiation through mixing with carbonate-rich raw materials is recommended.

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The influence of clay composition and lithology on the industrial potential of earthenware

Cited by 18 publications

References 30 publications

Characterization of Neogene marls from the Kert Basin (northeast Morocco): suitability for the ceramics industry

Characterization of Neogene marls from the Kert Basin (northeast Morocco): suitability for the ceramics industry

Main parameters influencing the plastic behavior of clays used for traditional ceramics production

Composition and Technological Properties of Clays for Structural Ceramics in Limpopo (South Africa)

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