Characterization, Modification and Rheology of Green Clay

Leila Verônica da Rocha-Gomes; Antônio José Santana; Camila Martini Matos; Valquíria de Fátima Justo; Maria das Graças da Silva-Valenzuela; Francisco Rolando Valenzuela-Diaz

doi:10.4028/www.scientific.net/MSF.820.60

Paper Titles

Study of a Typical Soil Used for Concrete Bricks in Miracema, State of Rio de Janeiro, Brazil
p.40

Influence of the Heating Rate on the Phase and Microstructural Transformations of Smectite Clays
p.46

Study of the Characterization of Smectitic Clays from a Town in the State of Paraíba
p.51

Physico-Mineralogical Characterization: Bentonitic Clays Recently Found in Olivedos, Paraíba, Brazil
p.56

Characterization, Modification and Rheology of Green Clay
p.60

Bentonite Clays Characterization in the Town of Sossego – Paraiba State
p.65

Effect of Solvothermal Treatment on Physical Properties of Nickel and Aluminum Based Oxide Powders Synthesized by Coprecipitation
p.73

Ceramic Membrane Made of Alumina Synthesized by Pechini Method for Application in Microfiltration Processes
p.79

Production of Mullite from Bentonite Clays and Alumina Residue
p.84

HomeMaterials Science ForumMaterials Science Forum Vol. 820Characterization, Modification and Rheology of...

Characterization, Modification and Rheology of Green Clay

Abstract:

Smectite clays or bentonites are used in several industrial applications. The aim of this study was to describe the characterization and organophilization of a green clay sample coming from the State of Paraíba, Brazil. The clay was characterized by XRD, XRF, CEC, SEM, stereoscopic microscopy, Fann viscosity (before and after the organophilization process), swelling capacity in water and some organic solvents. Prismatic specimens were conformed by pressing, for which were conformed the mechanical sthegth after drying at 110°C and after burning at 950°C. The burned specimens were analyzed to evaluate dimensional variations, water absorption, apparent porosity and apparent density. XRD showed that the sample was constituted mainly for montmorillonite claymineral. Analysis of rheological properties of the modified clay indicates its potential to meet the specifications of the standard N-2604 of Petrobras, concerning clays used to oil drilling.

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Periodical:

Materials Science Forum (Volume 820)

Pages:

60-64

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.820.60

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Online since:

June 2015

Authors:

Leila Verônica da Rocha-Gomes*, Antônio José Santana, Camila Martini Matos, Valquíria de Fátima Justo, Maria das Graças da Silva-Valenzuela, Francisco Rolando Valenzuela-Diaz

Keywords:

Bentonite, Brazilian Clay, Organophilization, Rheology

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