Palm kernel shell as a lightweight aggregate for concrete

Okafor, FO

doi:10.1016/0008-8846(88)90026-9

Cited by 99 publications

(41 citation statements)

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“…Flexural strength of the POCP concrete at different ages ranged from 4.01 to 6.15 MPa, and it was always higher than the control mix value at a specific age. Previous studies [20,21,30,31] also revealed that lightweight concrete has flexural strength in the range of between 2.13 and 4.93 MPa. Shetty (2005) [32] reported that for concrete with a compressive strength of 25 MPa and above, under continuous moist curing, the flexural strength is generally within the range of 8% to 11% of its compressive strength.…”

Section: Flexural Strengthmentioning

confidence: 93%

Effect of Coating Palm Oil Clinker Aggregate on the Engineering Properties of Normal Grade Concrete

2017

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Palm oil clinker (POC) is a waste material generated in large quantities from the palm oil industry. POC, when crushed, possesses the potential to serve as an aggregate for concrete production. Experimental investigation on the engineering properties of concrete incorporating POC as aggregate and filler material was carried out in this study. POC was partially and fully used to replace natural coarse aggregate. The volumetric replacements used were 0, 20%, 40%, 60%, 80%, and 100%. POC, being highly porous, negatively affected the fresh and hardened concrete properties. Therefore, the particle-packing (PP) method was adopted to measure the surface and inner voids of POC coarse aggregate in the mixtures at different substitution levels. In order to enhance the engineering properties of the POC concrete, palm oil clinker powder (POCP) was used as a filler material to fill up and coat the surface voids of POC coarse, while the rest of the mix constituents were left as the same. Fresh and hardened properties of the POC concrete with and without coating were determined, and the results were compared with the control concrete. The results revealed that coating the surface voids of POC coarse with POCP significantly improved the engineering properties as well as the durability performance of the POC concrete. Furthermore, using POC as an aggregate and filler material may reduce the continuous exploitation of aggregates from primary sources. Also, this approach offers an environmental friendly solution to the ongoing waste problems associated with palm oil waste material.

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Section: Flexural Strengthmentioning

confidence: 93%

Effect of Coating Palm Oil Clinker Aggregate on the Engineering Properties of Normal Grade Concrete

2017

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“…The attributes of the OPS is shown in Table 1. According to the table, the OPS has the density similar to the other lightweight aggregates while its weight is about 60% less as compared to the conventional coarse aggregates [13][14][15]. In addition, in comparison with conventional coarse aggregates, the OPS have about 80% lower Los Angeles abrasion value [16].…”

Section: Oil Palm Shell (Ops)mentioning

confidence: 96%

“…Therefore, such features and properties make OPS aggregates resistance to wear and due to its low impact and crushing values, it makes them absorbance to shock [17]. [14,15,[17][18][19][20].…”

Section: Oil Palm Shell (Ops)mentioning

confidence: 99%

“…In many of the studies, the compressive strength of the OPS lightweight concrete with 20% to 25% lower density as compared to the Normal Weight Concretes (NWC) and in presence or absence of the cementitious materials is within the normal bounds of the compressive strength of the structural lightweight concretes (25 to 35 MPA) [14,15,19,20]. Yet, it is still likely to enhance the compressive strength of the OPS lightweight concrete to 53 and 56 MPA in 28-day and 56-day tests [22,23].…”

Section: Propertiesmentioning

confidence: 99%

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Toward Sustainability in Concrete Industry by Using Of Solid Wastes from Palm Oil Industry

et al. 2016

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Abstract. Nowadays, one of the most important construction materials is concrete. By the advances of the industries in the urban areas, concrete is considered as one of the highest demands. As a result, the large amount of unprocessed materials is needed for making concrete. In the meantime, the agricultural wastes and solid material disposal are giving serious damages to the environment. As a result, by employing the agricultural wastes as a cementitious material, the undesirable impacts of the concrete industry to the environment will be dramatically decreased. That's because the source of these newly developed concretes is both reliable and environmental friendly. In this study, the utilization of agricultural wastes as a complementary cementitious material for producing the concrete is explained. In addition, it discusses the possibility of deploying the agricultural wastes by considering their engineering, physical and chemical properties. In addition, the successful use of agricultural wastes from oil palm industry such as oil palm shell, palm oil fuel ash and palm oil fibre in the concrete mixture was reported.

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“…Usporedna istraživanja su pokazala da je agregat od kokosovih ljuski bolji nego ljuske palminih plodova s obzirom na čvrstoću i trajnost materijala [6]. Postoji samo nekoliko radova koji su obradili primjenu poljoprivrednog otpada kao laganog agregata u konvencionalnom betonu [7,8]. Samozbijajući beton (eng.…”

Section: Uvodunclassified

Samozbijajući lagani beton na visokim temperaturama

2015

JCE

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Samozbijajući lagani beton na visokim temperaturama U radu su prikazani rezultati eksperimentalnog ispitivanja laganog samozbijajućeg betona s dodatkom kokosovih ljuski krupnom agregatu, pod utjecajem visokih temperatura. Nakon izlaganja betona temperaturi od 800 °C, zabilježene su promjene svojstava betona, poput tlačne čvrstoće i gubitka težine. Istraživanje je provedeno na uzorcima betona s dodatkom kokosovih ljuski u različitim omjerima kao zamjenu za krupni agregat. Za pripremanje mješavina betona upotrijebljeni su pepeo rižinih ljuski i silikatna prašina. Rezultati su pokazali da se svojstva očvrsnulog betona smanjuju na temperaturama većim od 400 °C. Lightweight self-compacting concrete at high temperaturesResults of experimental investigation of the lightweight self-compacting concrete subjected to elevated temperatures, with coconut shells added to coarse aggregate, are presented in this paper. Variations in the concrete properties, such as the compressive strength and weight loss, were observed after the concrete was subjected to the temperature of 800 °C. The investigation was carried out on concrete samples with varying proportions of coconut shells. The rice husk ash and silica fume were used to develop two reference concrete mixtures. The results show that the properties of hardened concrete decrease at temperatures of more than 400 °C.

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Palm kernel shell as a lightweight aggregate for concrete

Cited by 99 publications

References 1 publication

Effect of Coating Palm Oil Clinker Aggregate on the Engineering Properties of Normal Grade Concrete

Effect of Coating Palm Oil Clinker Aggregate on the Engineering Properties of Normal Grade Concrete

Toward Sustainability in Concrete Industry by Using Of Solid Wastes from Palm Oil Industry

Samozbijajući lagani beton na visokim temperaturama

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