Assessment of pozzolanic activity of palm oil clinker powder

Karim, M.R. and Hashim, H. and Abdul Razak, H. (2016) Assessment of pozzolanic activity of palm oil clinker powder. Construction and Building Materials, 127. pp. 335-343. ISSN 0950-0618, DOI

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Palm oil clinker (POC) is a waste material produced as result of using palm oil shell and mesocarp fibres as fuel to run stream turbines in palm oil mills. The current practice is to dump the waste in open land or landfill sites, which leads to environmental problems. The suitability of using the palm oil clinker powder (POCP) in concrete as well as blended cement largely depends on its pozzolanic activity. In the present study, the pozzolanic activity of POCP has been investigated using X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR) techniques, and compressive strength activity index measurement. The microstructure of the hydrated cement paste was observed using field emission scanning electron microscopy (FESEM). In order to evaluate the pozzolanic activity of the POCP, the pastes were prepared with ordinary Portland cement (OPC) at the level of substitution of 30%. The fluidity of the paste was maintained at 110 ± 5 mm. The strength activity index was evaluated according to ASTM standard. The microstructure properties investigation found that the portlandite (Ca(OH)2) react with SiO2 of POCP and formed C-S-H gel for strength development. This observation and strength activity index result confirmed that POCP is a pozzolanic material.

Item Type: Article
Funders: Ministry of Education (MoE): Research grant UM.C/625/1/HIR/MOHE/ENG/55
Uncontrolled Keywords: Pozzolanic activity; Palm oil clinker powder; Strength activity index
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering > Department of Civil Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 08 Sep 2017 02:05
Last Modified: 08 Sep 2017 02:05

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