RETRACTED ARTICLE: Mechanical and thermal properties of prepacked aggregate concrete incorporating palm oil fuel ash

Abstract

Prepacked aggregate concrete (PAC) is a special type of concrete which is made by placing coarse aggregate in a formwork and injecting a grout either by pump or under the gravity force to fill the voids. Use of pozzolanic materials in conventional concrete has become increasingly extensive, and this trend is expected to continue in PAC as well. Palm oil fuel ash (POFA) is one of these pozzolanic ash, which has been recognized as a good pozzolanic material. This paper presents the experimental results of the performance behaviour of POFA in developing physical and mechanical properties of prepacked aggregate concrete. Four concrete mixes namely, prepacked concrete with 100% OPC as a control, and PAC with 10, 20 and 30% POFA were cast, and the temperature growth due to heat of hydration and heat transfer in all the mixtures was recorded. It has been found that POFA significantly reduces the temperature rise in prepacked aggregate concrete and delay the transfer of heat to the concrete body. The compressive and tensile strengths, however, increased with replacement up to 20% POFA. The results obtained and the observation made in this study suggest that the replacement of OPC by POFA is beneficial, particularly for prepacked mass concrete where thermal cracking due to extreme heat rise is of great concern.

Flexural Study of Reinforced Foamed Concrete Beam Containing Palm Oil Fuel Ash (POFA) and Eggshell Powder (ESP) as Partial Cement Replacement

“…At the ultimate load 18.1kN, mix 20P10E have strain value 7.27 and -3.91 whilst mix 20P5E at the ultimate load 18.0 have strain value 8.30 and -4.11 respectively. Higher strain value on the both mixes compared to control beam was due to higher ultimate load which direct relation toward the ultimate load of beam as suggested by the other researcher (Mohammadhosseini et al, 2016) Addition of 20P10E had shown to more strain resistance against load applied which can be beneficial for beam to resist loading.…”

Effect of elevated temperatures on properties of sustainable concrete composites incorporating waste metalized plastic fibres

“…10. With reference to the developed equations of (9)- (12), similar to the air-cooled specimens, a linear regression relation was found with R 2 values of higher than 0.7 for all specimens. The outcomes of this study confirm the findings by Mastali et al [40] on the existence of a good correlation amongst the UPV and residual compressive strength values of concrete reinforced with PP fibres.…”

“…Amongst the countries that produce palm oil products, Malaysia is the second producer, and nearly 4 million tons of palm oil fuel ash were produced and wasted in 2010. This waste material is now categorised as pozzolanic ash with adequate characteristics that can be recycled and used in concrete by enhancing the strength and durability of concretes [12,13].…”

Utilisation of Oil Palm Fibre Biomass Waste as Additives in Foamed Concrete

“…In Malaysia's agricultural sector, oil palm is one of the main exports, which has helped develop the industry and the economy. Lignocellulosic biomass generated from oil palm industries comprises cellulose, hemicellulose, and lignin and is often referred to as plant biomass (Mohammadhosseini et al, 2016). Oil palm trunks (OPT), oil palm fronds (OPF), empty fruit bunches (EFB) and palm pressed fibres (PPF), palm shells, and palm oil mill effluent (POME) are included in this classification.…”