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vol.78 número167INTEGRATION OF MANAGEMENT SYSTEMS. NEED FOR A NEW ENTREPRENEURIAL CULTURECHITOSAN-MODIFIED BENTONITIC CLAY FOR BIODEGRADABLE COMPOSITE MATERIALS índice de autoresíndice de assuntospesquisa de artigos
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DYNA

versão impressa ISSN 0012-7353

Resumo

SANTOS AMADO, JOSÉ DARÍO; MALAGON VILLAFRADES, PEDRO YESID  e  CORDOBA TUTA, ELCY MARÍA. CHARACTERIZATION OF CLAYS AND PREPARATION OF CERAMIC PASTES FOR THE MANUFACTURE OF ROOFING TILES AND BRICKS IN THE REGION OF BARICHARA, SANTANDER. Dyna rev.fac.nac.minas [online]. 2011, vol.78, n.167, pp.50-58. ISSN 0012-7353.

The aim of this work was to characterize chemical, mineralogical, granulometric, plastic and thermally three clays, named "Cascajo" (C), "Roja" (R) and "Amarilla" (A), proceeding from Barichara, Santander. As well as, to obtain ceramic pastes suitable for the manufacture of bricks and roofing tiles. For which ceramic test pieces were made by pressing, which were sintered to 1050ºC and later them were physical and mechanically characterized. The results demonstrated that the paste of clay "Roja", with water content between 24 and 38%, is the most adequate for the manufacture of roofing tiles; since the ceramics present low water absorption (8.2 %) and high rupture module (9.3 MPa). To obtain bricks it is recommended the paste with clays mixture of 55% "Cascajo" and 45% "Amarilla", with water content between 23 and 32%; so, ceramics with water absorption minor to 15 % and rupture module bigger than 5 MPa are obtained

Palavras-chave : Clay; Brick; roofing tile; characterization; ceramic paste.

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