Effect of Organic Additives on Friction Properties of Clay Based Compounds

Abstract:

In the traditional heavy-clay industry, compounds are usually prepared by the addition of organic waste material. These additives originate mainly from the wood, food or paper industries. The purpose of this study is to present the results of the examination of friction contact between the wall of the forming die and the clay compounds containing organic additives. Saw dust and ground sunflower seed shell were mixed to clay in 0 wt%, 3 wt% and 5 wt%. The water content of compounds was also varied. The clay and the additives were described by morphology, XRD, bulk density and equivalent diameter. Friction tests were carried out on a special tribometer up to plastic deformation of the sample. The coefficient of friction decreased when normal stress was increased for all the ten compounds. Average results showed that the tendency of change in the value of the coefficient of friction could be divided into three sections: a decreasing, a quasi constant and a shearing section. It follows from this that the coefficient of friction can be characterized with a number only inside the quasi constant section, i.e. between two definable normal stress values. Averaged coefficient of friction was between 0.17 and 0.21 for saw dust and between 0.19 and 0.21 for the compounds with ground sunflower seed shell.

• Periodical: Materials Science Forum (Volume 729)
• Pages: 403-408
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.729.403
• Online since: November 2012
• Authors: István Kocserha, László A. Gömze, Ferenc Kristály, Robert Geber, Bálint Győrffy
• Keywords: Brick, Clay Compounds, Friction, Organic Additives

References

[1] E. Hallmann: Schneckenpressenberechnungen für keramische Stoffe (I-III), Sprechsaal vol. 116 (1983).

[2] L.A. Gömze: Choice of Technical Parameters for Screw Presses, Interbrick 2 (1986) 30-34.

[3] C. Djelal: Designing and perfecting a tribometer for the study of friction of a concentrated clay-water mixture against a metallic surface, Materials and Structures 34 (2001) 51-58.

DOI: 10.1007/bf02482200

[4] W. Hoffmann, H. Berger: Flow simulation in the Ceramic Industry, Ziegelindustrie International 4 (2000) 13-16.

[5] F. Laenger: Designing an extruder with allowance for the properties of ceramic extrusion compounds, Part 1-5, German Ceramic Society Report Vol 69 (1992) 3-8.

[6] F. Handle: Numerically optimized extrusion auxiliaries 1, Ziegelindustrie Int. 1/2 (2001) 31-36.

[7] H. Riegger, W. Wahl: Wear prevention in the heavy clay industry, Ziegelindustrie International 5 (2005) 44-51.

[8] I. Kocserha: Friction properties of clay minerals. Proceeding of International Conference of PhD Students ISBN 963 661 585 3Ö (2003) 347-353.

[9] W. Blümel, N. Dixon: British-German cooperative research on geosynthetic friction testing methods, Information on www. ggu. de.

[10] Gömze, L.A.: Mathematical principles of effectivity increase of smooth rollers in the ceramic industry II, Építőanyag 32/9 (1980) 339–345.

[11] H. Yamamoto, K. Morichi, H. Matsuoka, Y. Tanaka, D.A. Sun: Frictional behaviour between clay and steel by direct shear type apparatus. Deformation Characteristics of Geomaterials, (2003).

DOI: 10.1201/noe9058096043.ch30

[12] F. Hammoud: A microstructural study of the behaviour of large displacement interfacial shearing between a cohesive soil and steel, 2nd International Conference on New Developments in Soil Mechanics and Geotechnical Engineering (2009) 320-327.

[13] W. H. Tan, C. Y. Lee, T. Sivadass: Behaviour of Clay-Steel Interfaces, http: /www. uniten. edu. my, ICCBT (2008) 11-20.

[14] Albert J.: Clays in Brick Industry, Akadémiai kiadó (1967).

[15] Gömze, L.A., Kocserha, I., Czél, Gy.: Combined rheo–tribometer, Hungarian patent Nr. U0200079. (2002).

[16] Y. Tsubakihara, H. Kishida, T. Nishiyama: Friction between cohesive soils and steel, Soils and Foundations (1993) 145–156.

DOI: 10.3208/sandf1972.33.2_145