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Effect of plant-derived organic binders on fracture toughness and fatigue of kaolin-based refractories

  • Rees Rawlings Festschrift
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Abstract

The fracture properties of kaolin-based refractories prepared using plant-derived binders from okra and “mrenda” have been investigated and compared. It was observed that the MOR of fired samples improved from 37.5 ± 0.1 MPa (for binder-free samples) to 69.6 ± 0.1 MPa, and to 120.0 ± 0.1 MPa for okra- and ‘mrenda’-plasticized samples, respectively, while the fracture toughness increased from 3.9 ± 0.1 MPa (for binder-free samples) to 5.6 ± 0.1 and 5.7 ± 0.1 MPa for okra and ‘mrenda’-plasticized samples, respectively. It is concluded that the use of organic binders enhances the reliability and service life of kaolin refractories used in thermally fluctuating environments.

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Authors and Affiliations

  1. Department of Physics, University of Nairobi, P.O. Box 30197, Nairobi, 00100, Kenya

    M. S. Njogu, F. W. Nyongesa & B. O. Aduda

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  1. M. S. Njogu
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  2. F. W. Nyongesa
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  3. B. O. Aduda
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Correspondence to B. O. Aduda.

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Njogu, M.S., Nyongesa, F.W. & Aduda, B.O. Effect of plant-derived organic binders on fracture toughness and fatigue of kaolin-based refractories. J Mater Sci 43, 4107–4111 (2008). https://doi.org/10.1007/s10853-008-2533-1

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  • DOI: https://doi.org/10.1007/s10853-008-2533-1

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