Effect of Palm Oil Fuel Ash and Eggshell Waste Powder on Compressive Strength and Heat of Hydration for Concrete
| Autor: | K M F K Meh, Z Jamellodin, N Salleh, N A A Hamid, S H Adnan |
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| Rok vydání: | 2022 |
| Zdroj: | IOP Conference Series: Earth and Environmental Science. 1022:012050 |
| ISSN: | 1755-1315 1755-1307 |
| Popis: | The aim of the research is to use palm oil fuel ash (POFA) and eggshell waste powder (ESP) as OPC replacement in concrete. The effects of POFA-ESP on compressive strength and heat of hydration was investigated. These materials were sieved through 45 µm to obtained the similarly OPC particles. The cement replacement of 20% with POFA-ESP was considered. Based on optimum results, the mix proportion of POFA 10% + ESP 10% achieved the optimum compressive strength at 28 days. However, the OPC concrete had the highest compressive strength. In hydration reaction of concrete, the concrete incorporating of 10% POFA+10% ESP has recorded with the highest peak temperature, while the temperature of OPC concrete recorded lower than 10% POFA+10% ESP. It differs from the concrete containing 20% POFA, which has the lowest temperature gains when compared to OPC concrete. It has been observed that the POFA has a low CaO composition. It has been found that the POFA is known has a low composition of CaO. The higher CaO composition is known to have occurred in ESP. This led to higher calcium hydroxide, Ca(OH)2 produced during the hydration process and therefore did not control the heat released from the hydration temperature. |
| Databáze: | OpenAIRE |
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