เอกสารการประชุมวิชาการและเสนอผลงานวิจัย มหาวิทยาลัยทักษิณ ครั้งที่ 19 2552 - page 58

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Lightweight Concrete Made from Oil Palm Shell Aggregate Blended with Granite Fill Wastes
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Danupon Tonnayopas1* and Kalayanee Kooptarnond2
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Abstract
Characterizations of lightweight concrete used solid waste oil palm shell (OPS) as coarse aggregate
blended with fine granite waste were investigated. Portland cement, Type I mixed with 10, 20 and 30% by weight
of fine granite waste and were cured in water and tested at 1, 7, 14, 21, 28 and 56 days. The OPS aggregate
properties were determined through grain size distribution, flakiness and elongation index, Los Angeles abrasion,
water absorption, and impact tests. Other characterizations of OPS concrete namely, the electrical resistance,
drying shrinkage, Schmidt rebound hardness and compressive strength was also determined. The hydration
products were identified by means of X-ray diffraction (XRD) and their microstructure by scanning electron
microscope (SEM). The average compressive strengths of OPS concrete in the range of 16 to 29 MPa and were
satisfied the strength requirement for structural lightweight concrete.
Keywords: oil palm shell; fine granite waste; lightweight concrete; coarse aggregate; aging
1 ¦°Š«µ˜¦µ‹µ¦¥r £µ‡ª·µª· «ª„¦¦¤Á®¤º°ŠÂ¦n¨³ª´ —» ‡–³ª·«ª„¦¦¤«µ˜¦r ¤®µª·š¥µ¨´¥Š ¨µœ‡¦· œš¦r Š ¨µ 90112
2 ¦°Š«µ˜¦µ‹µ¦¥r £µ‡ª·µª· «ª„¦¦¤Á®¤º°ŠÂ¦n¨³ª´ —» ‡–³ª·«ª„¦¦¤«µ˜¦r ¤®µª·š¥µ¨´¥Š ¨µœ‡¦· œš¦r Š ¨µ 90112
* Corresponding author : Ú¦«´¡šr/Ú¦µ¦ 074-212897 E-mail:danupon.t@psu.ac.th