The Effects of Oil Palm Shell Aggregate Shape on the Thermal Properties and Density of Concrete

Serri, Eravan; Suleiman, Mohd Zailan; Mydin, Azree Othuman

doi:10.4028/www.scientific.net/amr.935.172

Cited by 35 publications

(25 citation statements)

References 7 publications

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“…The reduction in thermal conductivity with the rise in the SF volume fraction (up to optimum weight fraction) can be attributed to the natural fiber's porous nature as well as the presence of lumen. Very low thermal conductivity pertaining to LFC composites could be due to the redistribution as well as the creation of smaller uniform pore void facilitated by the introduction of the SF [23]. This phenomenon yielded more multiple isolated pore voids when compared with the control with no addition of fiber.…”

Section: Thermal Conductivitymentioning

confidence: 99%

The Potential of Sisal Fibre as an Additive in Lightweight Foamed Concrete for Thermal Properties Enhancement

Mydin¹

2022

Adv. Sci. Technol. Res. J.

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Lightweight foamed concrete (LFC) is extremely permeable, and its thermal properties reduce with rising in the number of voids. In turn, to improve its thermal properties, the solid matrix of LFC can be adjusted by incorporating several natural fibers. The influence of sisal fiber in LFC was not investigated before in the current body of knowledge. Hence, there is some ambiguity considering the mechanism by which and the extent to which the sisal fiber can influence LFC thermal properties. Hence, this study concentrates on distinguishing the potential use of sisal fiber in LFC. The purpose of this research is to determine LFC's thermal characteristics when sisal fiber is added. Casting and testing of densities of 800 kg/m 3 and 1600 kg/m 3 were done. Various weight fractions were employed pertaining to sisal fiber, i.e., 0.15%, 0.30%, 0.45% and 0.60%. The components of thermal properties, which consist of specific heat, thermal conductivity as well as thermal diffusivity were evaluated. To get comparable results, we fixed the water to cement ratio as 0.45 while keeping constant the cement to sand ratio at 1:1.5. It was seen that optimum results were achieved with the addition of 0.45% of sisal fiber with regard to all the thermal characteristics regarded in this exploration. At 0.45% weight fraction about sisal fiber, maximum compaction was achieved with fibers as well as the cementitious matrix, which ensued in good mix uniformity. Beyond the optimum level pertaining to the presence of sisal fiber, it could be seen that fibers would agglomerate and exhibit non-uniform dispersion, which resulted in a decline with regards to the entire thermal characteristics assessed.

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Section: Thermal Conductivitymentioning

confidence: 99%

The Potential of Sisal Fibre as an Additive in Lightweight Foamed Concrete for Thermal Properties Enhancement

Mydin¹

2022

Adv. Sci. Technol. Res. J.

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“…Recently, lightweight foamed concrete (LFC) has gained major attention among the industrial players and building material manufacturers owing to its excellent thermal and mechanical properties such as high flowability, low self-weight, good thermal performance and sound insulation properties [1][2][3]. Besides, LFC is an environmentally friendly building material because of its minimal usage of aggregate and high potential to integrate waste material such as natural fibres [4].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Low Densities Lightweight Foamed Concrete Strengthen with Raw Empty Fruit Bunch Fibre

2022

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Lightweight foamed concrete (LFC) is well known as a low-density concrete with a wide range of applications. LFC is good under compression but very poor in bending and tensile stresses, as it produces multiple microcracks and cannot withstand the additional stress induced by applied forces without supplementary reinforcing components especially in low densities LFC. Hence this study experimentally examined the effectiveness of the inclusion of oil palm empty fruit bunch (EFB) fibre in low densities lightweight foamed concrete (LFC) to enhance its mechanical properties. LFC specimens were reinforced with EFB fibre at volume fractions of 0.15%, 0.30%, 0.45%, and 0.60%. Three low densities LFC had been considered in this study namely 550 kg/m 3 , 750 kg/m 3 and 950 kg/m 3 with a constant cement-to-sand ratio of 1:1.5, and cement-to-water ratio of 0.4. The parameters assessed were compressive strength, bending strength and splitting tensile strength. The results revealed that the inclusion of 0.45% of EFB fibre in LFC helps to give the best results for the compressive, bending and splitting tensile strengths. EFB fibre acts as fillers bridging the gaps and microcracks within the LFC, resulting in the high strengths. The EFB fibre helped to avoid the promulgation of cracks in the plastic state in the cement matrix when the load was applied. Though, beyond the optimum level of EFB fibre addition, agglomeration, and the non-uniform dispersion of fibres was observed, which results in the lowered performance of the low densities LFC.

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“…LFC is a material low in mechanical properties compared to contemporary concrete of a normal weight (Serri et al, 2014). It can be defined as a cementitious material containing at least 20% by volume of mechanically trained moisture in the mortar slurry, in which air pores are fixed in the matrix utilising a suitable foam (Ramli et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Stimulus of Raw Oil Palm Trunk (OPT) Fibre on Durability Properties of Lightweight Foamed Concrete

Mydin¹

2022

IJARBSS

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Lightweight Foamed Concrete (LFC) has gained a huge amount of attention because of its high flowability, low self-weight, lower use of aggregate, low strength, and its thermal insulation. Furthermore, LFC is an environmentally friendly material because of its minimal usage of aggregate and high potential to incorporate waste material such as fibre. This research was conducted to assess the potential utilisation of oil palm trunk (OPT) fibre strengthened LFC in terms of its durability. Two densities of 600kg/m 3 and 1200kg/m 3 , were cast and tested with 4 different percentages of OPT fibre, which were 0.15%, 0.30%, 0.45% and 0.60%. The parameters evaluated were water absorption, porosity, drying shrinkage, ultrasonic pulse velocity. The results revealed that the inclusion of OPT in LFC helps to minimise water absorption and the porosity of LFC. Moreover, the inclusion of OPT also enhances the drying shrinkage and ultrasonic pulse velocity of LFC.

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The Effects of Oil Palm Shell Aggregate Shape on the Thermal Properties and Density of Concrete

Cited by 35 publications

References 7 publications

The Potential of Sisal Fibre as an Additive in Lightweight Foamed Concrete for Thermal Properties Enhancement

The Potential of Sisal Fibre as an Additive in Lightweight Foamed Concrete for Thermal Properties Enhancement

Mechanical Properties of Low Densities Lightweight Foamed Concrete Strengthen with Raw Empty Fruit Bunch Fibre

Stimulus of Raw Oil Palm Trunk (OPT) Fibre on Durability Properties of Lightweight Foamed Concrete

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