CHARACTERIZATION OF CLAYS FROM CAMPOS DOS GOYTACAZES, STATE OF RIO DE JANEIRO, BRAZIL

被引：0

作者：

Vieira, C. M. F. ^{[1
]}

Monteiro, S. N. ^{[1
]}

机构：

[1] State Univ N Fluminense Darcy Ribeiro, UENF, Adv Mat Lab, LAMAV, BR-28013602 Campos Dos Goytacazes, Brazil

来源：

EPD CONGRESS 2009, PROCEEDINGS | 2009年

关键词：

Clays; characterization; properties;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The main characteristics and physical and mechanical properties of clays from the county of Campos dos Goytacazes, located at the northern part of the State of Rio de Janeiro, Brazil, are presented. The characterization included mineralogical composition, chemical composition and particle size distribution. The properties related to water absorption, linear shrinkage and flexural rupture strength were obtained in samples that were prepared by 20 MPa uniaxial pressing and fired at 950 and 1100 degrees C. The results showed that the clays are predominantly kaolinitic with high percentage of clay minerals. The kaolinitic structure associated with a small amount of fluxes confers a refractory behavior which makes difficult the sinterization and impairs the ceramic consolidation.

引用

页码：241 / 248

页数：8

共 10 条

[1]

*ABNT, 1984, NBR718184 ABNT

[2] Mineralogical evaluation and industrial applications of the Triassic clay deposits, Southern Tunisia [J].