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Characterization of palm oil fuel ash and eggshell powder as partial cement replacement in concrete

N. H. A., Khalid and N. N. A., Rasid and A. R., Mohd.Sam and N. H. A. S., Lim and M., Ismail and L., Zardasti and A., Mohamed and Z. A., Majid and Nur Farhayu, Ariffin (2018) Characterization of palm oil fuel ash and eggshell powder as partial cement replacement in concrete. In: IOP Conference Series: Materials Science and Engineering; 14th International Conference on Concrete Engineering and Technology, CONCET 2018, 8 - 9 August 2018 , Kuala Lumpur, Malaysia. pp. 1-10., 431 (3). ISSN 1757-8981 (Print), 1757-899X (Online)

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The utilization of palm oil fuel ash (POFA) and eggshell powder (ESP) in concrete as a cement replacement is possible as green concrete materials. However, the POFA has original cellulose and physical modification is needed. This paper presents the characterization of POFA; unground POFA (UPOFA) and ground POFA(GPOFA) and ESP under microstructure examination includes x-ray fluorescence (XRF), scanning electron microscopy (SEM), and particle size analyzer (PSA). Then, the POFA-ESP as a cement replacement in concrete was investigated. Optimum mix proportion of POFA-ESP concrete was determined from compression test and GPOFA-ESP and UPOFA-ESP were through further investigation on pozzolanic reaction under x-ray diffraction (XRD) test at 14 days-concrete age. It was found that the combination of GPOFA-ESP as a cement replacement produced a concrete enhanced the compressive strength than normal concrete. ESP in this study seems like a catalyst which acting as mild accelerator or booster to improve the early age of strength development without disturb the later strength development of concrete. In addition, combination of GPOFA-ESP could increase the C-S-H gel at early age of concrete. It can be concluded that the combination of GPOFA-ESP had dual function; ESP and GPOFA took at early and later strength development, respectively.

Item Type: Conference or Workshop Item (Lecture)
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Cements; Compression testing; Compressive strength; Palm oil; Particle size; Particle size analysis; Scanning electron microscopy
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Faculty/Division: Faculty of Civil Engineering Technology
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 27 Apr 2021 02:35
Last Modified: 27 Apr 2021 02:35
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