Composition and ceramic properties of triassic clays from tunisia
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Investigations were undertaken to assess the thermal modification in clay products from the Triassic deposit (Southeast Tunisia), in order to use them in ceramic products. That is why the study had recourse to several quantitative and qualitative techniques of analysis; chemical analysis, a mineralogical study, thermal analyses and analyses of geotechnical traits. The geotechnical characterization was carried out on a representative mixture of Triassic clay. The samples were dry pressed on clay bodies and sintered at temperatures ranging from 850 to 1150 oC. XRD and SEM were used to identify the phases present and the densification level. The relationship between water absorption, shrinkage and resistance to inflection as a function of the firing temperature was examined in order to enhance the quality of the final products and to optimize the production process. The results revealed that sintering is governed by different mechanisms according to the temperature. The neomineralization processes were investigated principally by X-ray diffraction. At the end of this study one can affirm that these clays have qualities necessary for the manufacture of traditional ceramic products.
Abstract
Investigations were undertaken to assess the thermal modification in clay products from the Triassic deposit (Southeast Tunisia), in order to use them in ceramic products. That is why the study had recourse to several quantitative and qualitative techniques of analysis; chemical analysis, a mineralogical study, thermal analyses and analyses of geotechnical traits. The geotechnical characterization was carried out on a representative mixture of Triassic clay. The samples were dry pressed on clay bodies and sintered at temperatures ranging from 850 to 1150 oC. XRD and SEM were used to identify the phases present and the densification level. The relationship between water absorption, shrinkage and resistance to inflection as a function of the firing temperature was examined in order to enhance the quality of the final products and to optimize the production process. The results revealed that sintering is governed by different mechanisms according to the temperature. The neomineralization processes were investigated principally by X-ray diffraction. At the end of this study one can affirm that these clays have qualities necessary for the manufacture of traditional ceramic products.
참고문헌 (21)
- A. Aydýn, , App Clay Sci., 24, pp.257~269 (2004)
- F. Jamoussi, , 박사, pp.2002
- C.M.F. Vieira, , Const and Build Mater, 22, pp.781~787 (2008)
- J. Parras, , App Clay Sci., 11, pp.25~41 (1996)
- H.M. Hassan Darweesh, , Cera Internation., 27, pp.45~50 (2001)
- D.M Moore, "in X-ray Diffraction and the Identification and Analysis of Clay Minerals", ~ (1989)
- Láboratoire Central des Ponts et Chaussées, , publication LCPC, 26(19) (1987)
- AFNOR EN 100, "Carreaux et dalles céramiques", Détermination de la résistance à la flexion, 7~ (1982)
- AFNOR EN 99, "Carreaux et dalles céramiques", Détermination de l’absorption d’eau, 6~ (1982)
- P. Fisher, "Some comments on the color of fired clays", Ziegel industrie International, 37, pp.475~483 (1984)
- R. Kreimeyer, "Some notes on the firing color of clay bricks", Appli Clay Sci, 2, pp.175~183 (1987)
- AH .Rankin, , Mineral Magazine, 51, pp.517~525 (1987)
- S. Sousa, , Ceram inter, 31, pp.215~222 (2005)
- S.Monteiro, , Appli Clay Sci., 27, pp.229~234 (2004)
- Holtz, Kovacs, "Kanas Geotechnical Survey", Current research in Earth Sciences, 244 (1981)
- H. Hassan, "Darweesh", Ceram inter, 27, pp.45~50 (2001)
- K. Swapan, , Appli Clay Sci., 29, pp.137~143 (2005)
- M. Hajjaji, , Appli Clay Sci., 21, pp.203~212 (2002)
- K. Traoré, , Ceram Interna., 29, pp.377~383 (2003)
- K. Traoré, , Appli Clay Sci., 17, pp.279~292 (2000)
- E. Kamseu, , Ceram Inter., 33, pp.851~857 (2007)