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Research Papers

Physical Properties of Porous Clay Ceramic-Ware

[+] Author and Article Information
A. K. Plappally, I. Yakub, L. C. Brown, W. O. Soboyejo, A. B. O. Soboyejo

Food Agricultural and Biological Engineering,  The Ohio State University, Columbus, OH 43210PRISM,  Princeton University, Princeton, NJ 08544; Mechanical and Aerospace Engineering Department,  Princeton University, Princeton, NJ 08544Food Agricultural and Biological Engineering,  The Ohio State University, Columbus, OH 43210Fellow ASME PRISM,  Princeton University, Princeton, NJ 08544; Mechanical and Aerospace Engineering Department,  Princeton University, Princeton, NJ 08544Fellow ASME Food Agricultural and Biological Engineering,  The Ohio State University, Columbus, OH 43210

J. Eng. Mater. Technol. 133(3), 031004 (Jun 24, 2011) (9 pages) doi:10.1115/1.4004158 History: Received October 02, 2010; Revised April 16, 2011; Published June 24, 2011; Online June 24, 2011

The focus of this study is on the physical properties of clay ceramic materials compatible for drinking water filtration. A multiparameter lognormal multivariate regression approach is proposed for assessing the combined effects of quantity of compositional constituent of raw materials used in ceramic manufacture on toughness. The approach was validated for two specimen types (T- and S-specimens) derived from a circular base of the frustum shaped, porous clay ceramic ware (PCCW). The PCCW were manufactured from clay and sieved sawdust mixed at distinct volume fractions. The variation of the porosity and density of the PCCW was studied with respect to the amounts of sawdust and clay used in the manufacturing. The research helped to clearly define the roles of clay and sawdust quantities for strength development in both T- and S-specimen. A generalized experimental approach is proposed for estimation of mechanical properties of clay ceramics as a function of the material constituent fractions. A polynomial relationship was developed between the compressive strength and density of the PCCW material. The statistical model expressions developed herein may be used for the prediction of material and mechanical properties of similar materials, including natural and engineered materials.

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Copyright © 2011 by American Society of Mechanical Engineers
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Figures

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Figure 1

Two-dimensional representation of development of the frustum-shaped green ware during the axial press forming operation

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Figure 2

The three point bend test specimen

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Figure 3

Characterization of specimens according to the two basic transport modes of wet clay-sawdust suspensions noticed during the axial press forming operation as shown in Fig. 1

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Figure 4

KIc versus volume fraction of sawdust percentage, for T and S specimens

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Figure 5

Pore size distribution in porous clay ceramic ware samples discussed in this study

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Figure 6

Average Density (g/cc) as a function of corresponding volume fraction of sawdust used in the PCCWs

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Figure 7

Fit between KIc predicted using Eq. 22 and KIc measured for T specimen

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Figure 8

Plot between KIc measured for S specimen versus KIc predicted using Eq. 25

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Figure 9

Fracture toughness (Yfac ) in clay ceramics containing fly ash as a function of its manufacturing component Xfac1 ([44])

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Figure 10

The average failure stress as a function of density of the 75-25, 65-35, and 50-50 PCCW material

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