PROPERTIES of POROUS CERAMICS PRODUCED by SINTERING TERRA ROSSA-ALKALI MIXES

Authors : Canan MERCAN, Mehmet Uğur TOPRAK, Eda TAŞÇI, Musa AKMAN

Pages : 130-138

View : 42 | Download : 12

Publication Date : 2022-06-30

Article Type : Research Paper

Abstract :Porous ceramics were produced by sintering terra rossa insert ignore into journalissuearticles values(TR); with alkalis for void formation at 1000 °C. Little cylinders insert ignore into journalissuearticles values(25x25 mm); were prepared with TR to investigate the influence of alkali type insert ignore into journalissuearticles values(NaOH, Na2CO3 and KOH); and amount insert ignore into journalissuearticles values(8, 10 and 12% by weight of TR); on the physical, mechanical and microstructure of porous ceramics insert ignore into journalissuearticles values(PC);. The highest compressive strength insert ignore into journalissuearticles values(32 MPa); was obtained in series with no alkalis. The addition of alkalis decreased the unit weight and compressive strength of PC due to decreased sintering temperature, increased foaming and excessive formation of glassy phase causing the brittle structure. The unit weight of the PC produced with NaOH and Na2CO3 was considerably low insert ignore into journalissuearticles values(0.62-0.70 g/cm3); compared with PC comprising KOH insert ignore into journalissuearticles values(1.05-2.16 g/cm3);. Corresponding compressive strengths were 3.17-4.46 MPa and 7.68-25.87 MPa revealing that it can be used as a decorative alternative to clay brick and autoclaved aerated concrete blocks.
Keywords : Compressive strength, Porous ceramics, Sintering, Terra rossa

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