Academic literature on the topic '870304 Stone, Ceramics and Clay Materials'

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Journal articles on the topic "870304 Stone, Ceramics and Clay Materials"

1

Subbota, Іrіna, Larysa Spasonova, and Аnastasia Sholom. "Increasing the strength of building ceramics made on the basis of low-melting clays." Technology audit and production reserves 5, no. 3(67) (October 31, 2022): 6–11. http://dx.doi.org/10.15587/2706-5448.2022.266605.

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The object of the study is the physical and chemical processes of formation of the structure and properties, intensification of sintering of ceramic masses based on local raw materials (Krynichanska low-melting clay raw materials of the Kyiv region, Ukraine) by regulating the chemical and mineralogical composition and technological regimes. When choosing clay raw materials for specific ceramic technologies, it is necessary to be guided by a comprehensive assessment of the physicochemical properties of clay rock. These can be the granulometric and material composition, including the chemical and mineralogical composition of the clay and impurity components, the presence of amorphous material. The state of order in the structure of clay-forming minerals is also important, the knowledge of which makes it possible to determine the ways of regulating the basic technological properties of clay rock in order to bring them to the required level. Among physical and mechanical parameters, mechanical strength is one of the main criteria for determining the suitability of raw materials for the production of building ceramics. The conducted studies have shown that with an increase in the amount of rotten stone additive introduced from 10 to 20 % of low-melting clay, the mechanical strength of ceramic samples in compression and bending increases. The introduction of rotten stone additive provides an increase in the coefficient of sensitivity to drying low-melting clay raw materials, which has a positive effect on the crack resistance of raw bricks when drying clay rock in order to bring them to the required level. The use of silica materials in the composition of ceramic masses based on low-melting clays as an additive to improve the physical and mechanical characteristics of the finished product has shown its effectiveness. This can be explained by the fact that the nature of the interaction of silica additives, which was used as rotten stone, differs from the interaction of clay minerals present in ceramic raw materials with water. Since silica exists in rotten stone in the form of amorphous silica gel, it helps to improve the structure of clay, makes it monolithic, increasing mechanical strength. The impurities of low-melting oxides, which are part of the rotten stone, contribute to the formation of low-melting eutectic, reducing the refractoriness of amorphous silica and have a positive effect on the sintering process, forming a glass phase.
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2

Somrang, Parinya, Anucha Wannagon, Watcharee Sornlar, Pattarawan Choeycharoen, Sitthisak Prasanphan, and Witaya Shongkittikul. "Lampang Raw Material Characterization to Assess the Suitability for Ceramics Industry." Key Engineering Materials 690 (May 2016): 187–93. http://dx.doi.org/10.4028/www.scientific.net/kem.690.187.

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Lampang, a province in northern Thailand, is the important source of ceramics raw materials, such as kaolin, pottery stone, and ball clay. This study aims to investigate the new ceramics bodies by using these local raw materials. About 50 samples from 15 sources were collected to analyze the chemical composition, mineral composition, and physical properties. Kaolin samples principally consisted of quartz and kaolinite. Its greyish color after firing at 1200 °C made it suitable for stoneware product that does not require white body. The principal ball clay mineral is kaolinite, associated with illite and quartz. All ball clay samples are high strength, which are suitable for tableware production. Pottery stone which can be found at Kaolin deposit, showed a mixed mineralogy of quartz, albite, and muscovite, while some samples showed the presence of kaolinite. It showed significantly low on shrinkage. Pottery stone are widely used as flux in both ceramics body and glaze. These analyzed characteristics were put into the ceramics raw materials database which can be searched on-line. This data is useful for the researching of ceramics body compositions with mainly contained raw materials from Lampang.
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3

Smolyaninov, Roman Viktorovich, Aleksey Aleksandrovich Kulichkov, and Elizaveta Sergeevna Yurkina. "Materials of the early Neolithic of the Yarlukovskaya Protoka site (point 222) on the Upper Don." Samara Journal of Science 8, no. 2 (April 1, 2019): 220–29. http://dx.doi.org/10.17816/snv201982218.

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This paper analyzes materials located in the floodplain of the Matyra River (left tributary of the Voronezh River) of the Yarlukovskaya Protoka (point 222) in the Gryazinsky District of the Lipetsk Region. It was investigated in 1963, 1964, 1967 and 1968 by Vsevolod Levenok. The materials of three early Neolithic cultures of VI Millennium BC were revealed here. The materials of the Yelshanskaya culture are represented by corollas and bottoms of 12 vessels. Almost all dishes, except one bottom and several walls, have no ornament, with the exception of one or two rows of conical pit. All ceramics are well smoothed. Ceramics were made from silty clay. The location of materials in the cultural layer confirms the earlier occurrence of the Yelshanskaya culture ceramics. The ceramics of the Karamyshevo culture is represented by fragments from three vessels. The dishes are predominantly decorated with small oval pricks composed in horizontal and vertical rows. Ceramics were made from silty clay. Ceramics of the Srednedonskaya culture are represented by corollas and rounded bottoms of 15 vessels. It is decorated with triangular prick or small comb prints. Ceramics were made from silty clay. At Yarlukovskaya Protoka site 304 stone artifacts were discovered, mainly of flint. This industry could be described as flake-blade technique. The monument is a mixed complex - stratigraphic and planigraphic readable observations of stone inventory location could not be done.
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4

Babisk, Michelle Pereira, Wagner Souza Ribeiro, Mariane Costalonga de Aguiar, Veronica Scarpini Candido, Monica Castoldi Borlini Gadioli, Sergio Neves Monteiro, and Carlos Maurício Fontes Vieira. "Influence of Quartzite Residues on the Strength of Added Red Clay Ceramics." Materials Science Forum 775-776 (January 2014): 541–46. http://dx.doi.org/10.4028/www.scientific.net/msf.775-776.541.

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The incorporation of industrial residues into red clay ceramics has in past decades been used not only as a search for the alternative use of lower cost raw-materials but also an environmentally correct way of destination of polluting wastes. This work had as its objective to study the influence of incorporation of a quartzite stone residue on the mechanical strength of a red clay ceramic. Clay bodies were prepared with up to 40 wt% of the residue. These clay bodies were then uniaxially press-molded and sintered at 800 and 1050oC. The strength was evaluated by three points bend tests. The microstructural analysis was conducted by means of both optical and scanning electron microscopes. A tendency for decreasing the strength was found with the amount of incorporated residue. This was a consequence of the inert characteristic of the quartz, which is the predominant mineral in the quartzite stone, as well as the possible effect of cracks nucleated during the quartz allotropic transformation.
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5

Terrones-Saeta, Juan María, Jorge Suárez-Macías, Francisco Antonio Corpas-Iglesias, Valentyn Korobiichuk, and Volodymyr Shamrai. "Development of Ceramic Materials for the Manufacture of Bricks with Stone Cutting Sludge from Granite." Minerals 10, no. 7 (July 10, 2020): 621. http://dx.doi.org/10.3390/min10070621.

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The manufacture of bricks for building purposes consumes large quantities of virgin materials, such as clay. On the other hand, the ornamental stone processing industry produces a huge amount of stone cutting sludge in its process. Therefore, this study presents the development of ceramic materials for the manufacture of bricks with stone cutting sludges, more specifically from granite. For this purpose, the physical properties of the stone cutting sludge and the chemical composition were mainly analyzed. Subsequently, different groups of ceramic samples were conformed and sintered with various combinations of clay and of stone cutting sludges. The conformed samples were evaluated with different physical tests and with the compressive strength test. The addition of stone cutting sludges to the ceramics reflected the creation of a material with lower density and higher porosity. The compressive strength of the different groups reflected a maximum allowable percentage of stone cutting sludges incorporation of 70%. Therefore, ceramic materials were developed with stone cutting sludges, developing a sustainable, lighter material with acceptable mechanical and physical characteristics. Avoiding the deposition of a polluting waste in a landfill and at the same time avoiding the extraction of new virgin materials.
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6

Babisk, Michelle Pereira, Wagner Souza Ribeiro, Mariane Costalonga de Aguiar, Sergio Neves Monteiro, Carlos Maurício Fontes Vieira, and Francisco Wilson Hollanda Vidal. "Characterization of a Quartzite Residue and its Application in Red Clay Ceramics." Materials Science Forum 805 (September 2014): 541–46. http://dx.doi.org/10.4028/www.scientific.net/msf.805.541.

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The fabrication of conventional red clay ceramics products for civil construction, such as bricks and roofing tiles, normally uses other raw materials like sand, in addition to clay, as a way to condition the final ceramic properties. Quartzite residues, from ornamental stone processing in the northeast region of Brazil, could be used as possible conditioner material for clay body in a ceramic industry owing to its similar characteristics to common sand. In the present work, complementing a recent publication on the same materials, a quartzite residue was characterized and its potential as a red clay ceramic addition was evaluated for different composition up to 40 wt%. The results indicated economical advantages in association with some technical benefits.
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7

Selin, D. V., and Yu P. Chemyakin. "Pottery of the population of the Kulayka Culture (Surgut variant) in the settlement of Barsova Gora III/2: technology and traditions." VESTNIK ARHEOLOGII, ANTROPOLOGII I ETNOGRAFII, no. 2(57) (June 15, 2022): 44–57. http://dx.doi.org/10.20874/2071-0437-2022-57-2-4.

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Barsova Gora is a unique complex of archaeological sites of the Neolithic — Late Middle Ages. The repre-sentative body of the collected sources requires systematic analysis, primarily, of the pottery collections. This paper presents the results of technical and technological analysis of 50 vessels of the Kulayka Culture (Surgut variant) from different dwellings of the settlement of Barsova Gora III/2. The study of the technological markers was carried out with the aid of binocular microscopy of the surfaces and fractures of the ceramics, followed by the comparison with an experimental collection of technological markers. It has been determined that ferruginous low-sand clays were used as the raw ductile material. The main artificial admixture is represented by broken stone, while chamotte and organic substance are found in the clay paste only alongside the broken stone. It has been found that the principal recipe of the clay paste is clay + broken stone (64 %). The second most common recipe of the clay paste is clay + broken stone + chamotte (28 %). It is possible that the raw materials for the grus were imported from areas with stone outcrops, and/or unknown sources of stone from Barsova Gora and the surroun-ding area were used. The bottom and hollow body of the vessels were formed from laterally overlapping bands. External and internal surface treatments vary, and include 29 different combinations. A comparison of the pottery technology of the ceramics from the settlement of Barsova Gora III/2 with the pottery from the fortress of Barsov Goro-dok III/6 showed their similarity. Differences appear in particular adaptive skills of the potters. These differences can be explained by active two-way contacts of the population of Barsova Gora III/2 with the representatives of other ar-chaeological cultures who lived in this territory, and by the started processes of mingling of the pottery technology.
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8

KOTLYAR, A. V. "Characteristics of Stone-Like Clay Rocks as Raw Materials for the Production of Building Ceramics." Stroitel'nye Materialy, no. 4 (2022): 31–37. http://dx.doi.org/10.31659/0585-430x-2022-801-4-31-37.

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9

Xavier, Gustavo de Castro, Jonas Alexandre, Paulo César de Almeida Maia, Fernando Saboya Albuquerque, Leonardo Gonçalves Pedroti, Afonso Rangel Garcez de Azevedo, and Sergio Neves Monteiro. "Resistance to Synthetic Seawater Aggression of Clay Ceramics Incorporated with an Ornamental Stone Residue." Materials Science Forum 798-799 (June 2014): 269–74. http://dx.doi.org/10.4028/www.scientific.net/msf.798-799.269.

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Clay ceramic materials exposed to a marine environment may be subjected to complete degradation due to the presence of chloride salts in the air. The exposition allows the chloride to penetrate in structural pores causing an internal expansion, which eventually split the ceramic apart. In open air, the solar radiation as well as the rain and wind contribute to accelerate the degradation process. In the present work the laboratory assisted degradation of clay ceramics incorporated with a granite residue from ornamental stone processing was evaluated by synthetic seawater aggression according to standard procedure. The amount of incorporated residues, up to 10 wt % and the ceramic firing temperature, up to 900°C, were variable conditions statistically analyzed by factorial planning. Degradation wetting-drying tests were conducted up to 6 months. The results showed that the linear shrinkage of the residue-free ceramics do not stabilize during the test period for any firing temperature. By contrast, the residue-incorporated ceramics tend to stabilize after 4 months. In addition, a decrease in water absorption and flexural strength was observed in same speciemens.
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10

Alexandre, Jonas, Afonso Rangel Garcez de Azevedo, Gustavo de Castro Xavier, Frederico Muylaert Margem, Sergio Neves Monteiro, Fabio de Oliveira Braga, Neila Gondim de Azeredo, and Carla Bozzi Piazzarollo. "Influence of Weather Exposure on Dimensional Changes in Clay Ceramics Incorporated with Granite Residue." Materials Science Forum 869 (August 2016): 131–35. http://dx.doi.org/10.4028/www.scientific.net/msf.869.131.

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Ceramic materials such as bricks and tiles used in civil construction, may eventually be exposed to weather conditions and undergo degradation with time. Although this degradation has been studied in common plain ceramics, it has not yet been investigated in clay ceramics incorporated with ornamental stone residues. In the present work the degradation suffered by clay ceramics incorporated with 5 and 10 wt % of a granite residue under weathering for 6, 8 and 10 months was evaluated. The incorporated and plain ceramics were fired at temperatures of 500, 700 and 900°C. The linear dimensional changes were measured just after firing as well as after 180, 240 and 300 days, respectively, 6, 8 and 10 months. In general, the linear dimensions tend to increase with time and firing temperature. The role of absorbed water on these changes is discussed.
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