Effect of incorporation POFA in cement mortar and desired benefits: a review

Hamada, Hussein M.; Yahaya, Fadzil; Muthusamy, K.

doi:10.1088/1755-1315/365/1/012060

Cited by 4 publications

(2 citation statements)

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“…GPOFA can be used as a pozzolanic material in concrete to obtain appropriate impermeability and strength for concrete samples. Besides that, according to other research (Hamada et al , 2019) in making the lightweight aggregate concrete, the researcher used POFA with nanoparticle sizes varying from 0% to 30%. The results showed that by replacing the cement with NPOFA, the workability and compressive strength may increase; meanwhile, the ultrasonic pulse velocity (UPV) on a regular basis reduces the CO 2 emissions into the atmosphere by up to 30%.…”

Section: Findings and Discussionmentioning

confidence: 99%

“…In the lightweight aggregate concrete analysis, there was only a minimum amount of Ca(OH) 2 owing to its consumption in the pozzolanic reaction. When UPOFA was used in place of GPOFA, the amount of Ca(OH) 2 has been further consumed as more amount of amorphous SiO 2 was available to react with Ca(OH) 2 (Hamada et al , 2019). The heat of hydration during concrete production may involve the chemical structure of POFA (Abdul Awal and Shehu, 2015) and also affects the compressive strength and workability.…”

Section: Findings and Discussionmentioning

confidence: 99%

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The influence of palm oil fuel ash and metakaolin on the strength of concrete and crack resistance of reinforced concrete beam: a review

De’nan

Johari

Nyandau

et al. 2022

WJE

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Purpose The purpose of this study is to know the influence of palm oil fuel ash and metakaolin on the strength of concrete and crack resistance of reinforced concrete beam. An ordinary portland cement has been used in the concretes production where it is an important material to be considered due to its nature that reacts with every substance present. During the cement production, a significant amount of carbon dioxide is emitted from the clinker in rotary kiln and lot of energy is required in the production processes. Such an event can be prevented by replacing the part of cement with metakaolin (MK) and palm oil fuel ash (POFA). Aside from being a cementitious alternative, the materials can also contribute to a greener environment and more sustainable building, as POFA is available in Malaysia and may be used to substitute cement and minimize pollution. Design/methodology/approach This study assesses the effect of MK and POFA on the concrete in terms of compressive strength and cracks pattern of the reinforced concrete beam based on the relevant previous studies. Findings From this study, the compressive strength of concrete containing MK and POFA was higher than the control mix with the percentage of improvement in the range of 0.8%–78.2% for MK and 0.5%–14%, respectively. The optimum content of MK and POFA is between the range of 10% and 15% and 10% and 20%, respectively, to achieve high strength of concrete. Other than that, the inclusion of MK to the concrete mix improves the strength of reinforced concrete beams and reduces cracks on the surface of reinforced concrete beams, whereas the inclusion of POFA to the concrete mix increases the cracks on reinforced concrete beams. The cracks appeared within the flexure zone of every beam containing the MK and POFA. Originality/value It was found that the fineness of MK and POFA has a significant influence on the mechanical properties of concrete.

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Section: Findings and Discussionmentioning

confidence: 99%

Section: Findings and Discussionmentioning

confidence: 99%