Kaolinite‐based clay ceramics blended with residual fique fibers for potential plastic soil applications

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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Rehydroxylation of Fired‐Clay Ceramics: Factors Affecting Early‐Stage Mass Gain in Dating Experiments

Archaeometry ◽

10.1111/arcm.12038 ◽

2013 ◽

Vol 56 (4) ◽

pp. 689-702 ◽

Cited By ~ 16

Author(s):

M. A. Wilson ◽

S. Clelland ◽

M. A. Carter ◽

C. Ince ◽

C. Hall ◽

...

Keyword(s):

Early Stage ◽

Mass Gain ◽

Factors Affecting ◽

Clay Ceramics

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Novel Biobased Textile Fiber from Colombian Agro-Industrial Waste Fiber

Molecules ◽

10.3390/molecules23102640 ◽

2018 ◽

Vol 23 (10) ◽

pp. 2640 ◽

Cited By ~ 1

Author(s):

Maria Amaya Vergara ◽

Melissa Cortés Gómez ◽

Maria Restrepo Restrepo ◽

Jorge Manrique Henao ◽

Miguel Pereira Soto ◽

...

Keyword(s):

Textile Industry ◽

Industrial Waste ◽

Degree Of Polymerization ◽

Cellulose Content ◽

Short Fibers ◽

Cellulose Pulp ◽

Potential Applications ◽

Fique Fibers ◽

Regenerated Fibers ◽

Long Fibers

Fique fibers, native to Colombia, are traditionally used for ropes and bags. In the extraction of long fibers for these purposes, the same amount of short fibers is generated; the short fibers are then discarded in the soil or in landfills. This agro-industrial waste is cellulose-rich and can be potentially developed into new biobased products. As an alternative use for these fibers, viscose regenerated fibers with potential applications in the textile industry were developed. Fique waste fibers were pulped (to produce fique cellulose pulp, FCP) using a 33 design of experiment (DOE) to adjust the variables of the whitening treatment, and DOE analysis showed that time and hydrogen peroxide concentration do not have a significant effect on non-cellulosic remotion, unlike temperature. The behavior of this pulp in the production of viscose was compared against that of commercially available wood cellulose pulp (WCP). FCP showed a suitable cellulose content with a high degree of polymerization, which makes it a viable pulp for producing discontinuous viscose rayon filaments. Both pulps showed the same performance in the production of the viscose dope and the same chemical, thermal, and mechanical behavior after being regenerated.

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Acoustic emission characterization of kaolin-based clay ceramics

Applied Clay Science ◽

10.1016/s0169-1317(00)00023-5 ◽

2001 ◽

Vol 18 (3-4) ◽

pp. 191-204

Author(s):

A.D. Papargyris ◽

S.A. Papargyri

Keyword(s):

Acoustic Emission ◽

Clay Ceramics

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Influence of thermal treatment and combustible additives on properties of Latvian clay ceramics pellets

Processing and Application of Ceramics ◽

10.2298/pac1304175d ◽

2013 ◽

Vol 7 (4) ◽

pp. 175-180 ◽

Cited By ~ 3

Author(s):

Liga Dabare ◽

Ruta Svinka

Keyword(s):

Surface Area ◽

Ph Value ◽

Water Solution ◽

Porous Ceramic ◽

Mercury Porosimetry ◽

Environmental Application ◽

Wide Range ◽

Different Temperatures ◽

Ph Level ◽

Clay Ceramics

Porous ceramic pellets for possible environmental application were produced from different Latvian clays by sintering at different temperatures. Their characteristics and influence of additives were analysed using X-ray diffraction, mercury porosimetry and BET tests. The obtained ceramic pellets from calcareous clays after immersion in distilled water change its pH value, which affects their capability to adsorb ions or molecules on the surface. The sorption capabilities are dependent on the pH level of water solution, composition of clays, and used adsorbate. Porosity of the produced pellets is mostly within range from 15 to 25 % throughout all sintering temperatures with a slight decrease at 1050 ?C. The specific surface area has a wide range up to 30 m2/g. The highest surface area has pellets sintered at lower temperatures. The adsorption capability of pellets was evaluated using water solutions with different ions. The most promising results were obtained with iodine sorption. For most pellets the sorption capacity was 12.7 mg/g, although for the pellets sintered at 1050 ?C it was lower.

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Materials of the early Neolithic of the Yarlukovskaya Protoka site (point 222) on the Upper Don

Samara Journal of Science ◽

10.17816/snv201982218 ◽

2019 ◽

Vol 8 (2) ◽

pp. 220-229

Author(s):

Roman Viktorovich Smolyaninov ◽

Aleksey Aleksandrovich Kulichkov ◽

Elizaveta Sergeevna Yurkina

Keyword(s):

Silty Clay ◽

Mixed Complex ◽

Cultural Layer ◽

Early Neolithic ◽

Stone Artifacts ◽

Left Tributary ◽

Clay Ceramics ◽

Almost All ◽

Neolithic Cultures

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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CLASSIFICATION OF ARTISTIC GLAZED CERAMICS OF DERBENT OF THE END VIII-X CENTURIES. (on the example of materials from excavations XXVII and XXXIII)

History Archeology and Ethnography of the Caucasus ◽

10.32653/ch163714-759 ◽

2020 ◽

Vol 16 (3) ◽

pp. 714-759

Author(s):

Zuhra Z. Kuzeeva

Keyword(s):

Large Set ◽

Red Clay ◽

Large Section ◽

Wide Range ◽

Opaque Glaze ◽

Clay Ceramics ◽

The City ◽

Household Ceramics ◽

Archaeological Excavations

The article is devoted to the classification analysis of the glazed ceramics of Derbent, originating from the materials of archaeological excavations (excavations XXVII and XXXIII), carried out in 2014-2015. in the city. The chronological framework of the study was presumably determined by the end of the VIII-X centuries. The relevance of the topic is characterized by the importance of studying the glazed ceramics of Derbent as a source of a large set of information (historical, cultural and socio-economic interactions of Derbent with a wide range of countries of the Near and Far Abroad).Typology of glazed ceramics in Derbent at the end of the 8th-10th centuries is considered in the article on the basis of modern methodological developments based on three main approaches to the study of any ceramics: the study of technology together with the morphology and decor of the dishes. All investigated ceramics, consisting of fragments of rims, bodies, bases and handles of vessels, are included in one large Section - Household ceramics. This section includes three sections, which are based on the analysis of the clay color of the shard (red clay, brown clay, beige clay ceramics), which determines the technology for the production of dishes. Based on the presence or absence of engobe on ceramics, two subsections are allocated in each department. The next division is the groups that are formed according to the degree of transparency of the opaque glaze. There are three of them: ceramics with transparent, translucent, opaque (dull) glaze. Within some groups, four subgroups are additionally distinguished, determined by the color of the glaze. According to the peculiarities of the additional decor, the types (overglaze, underglaze ornament) and subtypes (painting, engraving, combination of painting with engraving, relief ornament) of ceramics are distinguished. Thus, the characteristics of the glazed ceramics of Derbent from these excavations include: Section, department, sub-department, group, subgroup, type, subtype.

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Hydrogels Are Reinforced with Colombian Fique Nanofibers to Improve Techno-Functional Properties for Agricultural Purposes

Agriculture ◽

10.3390/agriculture12010117 ◽

2022 ◽

Vol 12 (1) ◽

pp. 117

Author(s):

Marcelo A. Guancha-Chalapud ◽

Liliana Serna-Cock ◽

Diego F. Tirado

Keyword(s):

Cellulose Nanofibers ◽

Polymer Chains ◽

Reactive System ◽

Solution Polymerization ◽

Network Stability ◽

Net Production ◽

Swelling Capacity ◽

Hydrogel Formulation ◽

Fique Fibers ◽

Polymerization Method

Colombia is the world’s largest producer of fique fibers (Furcraea bedinghausii), with a net production of 30,000 tons per year. This work proposes to revalue waste from the Colombian fique agroindustry. For this purpose, cellulose nanofibers were obtained from fique and used as reinforcement material to create acrylic superabsorbent hydrogels. Unreinforced acrylic hydrogels (AHR0) and acrylic hydrogels reinforced with fique nanofibers at 3% w/w (AHR3), 5% w/w (AHR5), and 10 % w/w (AHR10) were synthesized using the solution polymerization method. The best hydrogel formulation for agricultural purposes was chosen by comparing their swelling behavior, mechanical properties, and using scanning electron microscopy (SEM). By raising the nanofiber concentration to 3% (AHR3), the best-chosen formulation, the interaction between the nanofibers and the polymer matrix increased, which favored the network stability. However, beyond AHR3, there was a higher viscosity of the reactive system, which caused a reduction in the mobility of the polymer chains, thus disfavoring the swelling capacity. The reinforced hydrogel proposed in this study (AHR3) could represent a contribution to overcoming the problems of land dryness present in Colombia, an issue that will worsen in the coming years due to the climate emergency.

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Characterization of Elephant Grass Ash as a Potential Clay Ceramic Addition

Materials Science Forum ◽

10.4028/www.scientific.net/msf.805.585 ◽

2014 ◽

Vol 805 ◽

pp. 585-590 ◽

Cited By ~ 2

Author(s):

Aline Marcia Ferreira Dias da Silva ◽

Karla Albernaz Sales ◽

Veronica Scarpini Candido ◽

Sergio Neves Monteiro ◽

Carlos Maurício Fontes Vieira

Keyword(s):

Electron Microscopy ◽

Bottom Ash ◽

Ceramic Production ◽

Elephant Grass ◽

Red Clay ◽

Clay Body ◽

Clay Ceramics ◽

Fluxing Agent ◽

Scanning Electron

The elephant grass (Pennicetum purpureum) is traditionally used both as fresh feedstock for cattle and, dried, as fuel for ceramic production in Campos dos Goytacazes, Brazil. In the present work the bottom ash generated after dry grass incineration in a ceramic furnace was characterized for a possible addition into red clay ceramics. The characterization comprised the ash morphology by laser microscopy, scanning electron microscopy coupled with EDS and thermal behavior by thermogravimetry as well as differential thermal analysis. These results indicated that the elephant grass ash could be added into a clay body not only as a fluxing agent but also to improve the particles compaction before firing.

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