Performance of Aggregate Incorporating Palm Oil Fuel Ash (Pofa) and Silt
Kwek Shi Ying1, Hanizam Awang2

1Kwek Shi Ying*, School of Housing, Building and Planning, University Sains Malaysia.
2Hanizam Awang, School of Housing, Building and Planning, University Sains Malaysia.
Manuscript received on September 24, 2019. | Revised Manuscript received on October 15, 2019. | Manuscript published on October 30, 2019. | PP: 1218-1223 | Volume-9 Issue-1, October 2019 | Retrieval Number: A9589109119/2019©BEIESP | DOI: 10.35940/ijeat.A9589.109119
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Abstract: Depletion of natural aggregate has created more research to explore the utilization of industrial waste as alternative aggregate in concrete construction. The use of industrial wastes in making of artificial aggregate will lead to greener environment. In this study an attempt has been made to find the suitability of waste materials of palm oil fuel ash (POFA) and water treatment sludge as possible substitute for natural coarse aggregate. Specific gravity, water absorption, crushing strength and impact value have been tested for this mixture. Both raw materials were mixed with lime and alkaline activator. The artificial aggregate was air-cured at non-sintered temperature. Results show that the different mix proportions of the POFA to silt affected the performance of the artificial aggregate. Specific gravity and water absorption increased with the proportion of silt. Lightweight aggregate comprising silt combined with POFA and alkaline activator has the potential to produce a good performance of concrete. These benefits contribute to the production of energy-efficient building materials.
Keywords: Artificial Aggregate, Waste Materials, POFA, silt.