เอกสารการประชุมวิชาการและเสนอผลงานวิจัย มหาวิทยาลัยทักษิณ ครั้งที่ 19 2552 - page 69

„µ¦ž¦³»¤ª·µ„µ¦Â¨³Áœ°Ÿ¨Šµœª·‹´¥ ¤®µª·š¥µ¨´¥š´„¬·– ‡¦´ÊŠš¸É 19 ž¦³‹Îµže 2552
The flexural strength, 30 MPa, was two times higher than that of the conventional materials. The fired specimens
were characterized with respect to the Thai standard specification (TIS 41-1986) as well as bulk density, volume
changes and firing weight loss. The anhydrite, cristobalite, quartz, akermanite, wollastonite and diopside phases
were found by XRD of sintered specimens. The result of study indicated that the batch containing 80% BQD and
20% GOPFA fired at 1200 qC exhibited the most satisfying ceramic properties that meet the TIS requirements for
making floor tile.
Keywords: Basalt quarry dust, Oil palm fiber ash, Industrial wastes, Ceramic tile, Flexural strength
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