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Experimental Applications of Oil Palm Fibre Ash Incorporated in Barite Tailing Mortar with
High Compressive Strength and Gamma Radiation Shielding
—œ»¡¨ ˜´œœÃ¥£µ1 ¨³ ª¦Š‡r ›µœ·œ¡Š«r2
Danupon Tonnayopas 1 and Warong Thaninpong2
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‡ÎµÎµ‡´ : ¤°¦r˜oµ¦r¤ª¨®œ´ „ ¤ª¨¦ª¤®µŠÂ¦nŦ˜r Á™oµÄ¥žµ¨r¤œÊÎ µ¤´œ „µ¦¨—š°œ¦´Š¸Â„¤¤µ
Abstract
This study was assessed mortar containing barite tailing aggregate (BTA) and oil palm fiber ash (OPFA)
as mineral admixture. The effect of different proportions of OPFA (10, 20 and 30 vol.%) and water-cured at 1, 7,
and 28 days on the physical, mechanical, gamma radiation properties and microstructure by X-ray diffraction
(XRD) and scanning electron microscope (SEM) of heavy mortar was determined. Experimental results showed
that BTA mortar had the bulk density in range of 2,248-3,514 kg/m3, low water absorption percent, and it had also
high values of compressive and bonding strengths. BTA mortar revealed the high attenuation of transmitted
gamma rays.
Keywords: Heavyweight mortar, Barite tailing aggregate, Oil palm fiber ash, J-ray attenuation
1 ¦«.—¦. £µ‡ª·µª·«ª„¦¦¤Á®¤º°ŠÂ¦n¨³ª´ —» ‡–³ª·«ª„¦¦¤«µ˜¦r ¤®µª·š¥µ¨´¥Š ¨µœ‡¦·œš¦r ®µ—Ä®n 90112
Assoc.Prof.Dr., Department of Mining and Materials Engineering,, Prince of Songkla University, Hat Yai, 90112.
Corresponding author : Ú¦«´¡šr/Ú¦µ¦ 0 7421 2897 ˜n° 7318 E-mail:danupon.t@psu.ac.th
2 œ´„«¹ „¬µž¦·µ˜¦¸ £µ‡ª·µª·«ª„¦¦¤Á®¤º°ŠÂ¦n¨³ª´ —» ‡–³ª·«ª„¦¦¤«µ˜¦r ¤®µª·š¥µ¨´¥Š ¨µœ‡¦·œš¦r ®µ—Ä®n 92110
Bachelor's Degree Student, Department of Mining and Materials Engineering,, Prince of Songkla University, Hat Yai, 90112