A comparison study of the mechanical properties and drying shrinkage of oil palm shell and expanded clay lightweight aggregate concretes

Shafigh, Payam; Ghafari, Hafez; Mahmud, Hilmi Bin; Jumaat, Mohd Zamin

doi:10.1016/j.matdes.2014.04.001

Cited by 65 publications

(17 citation statements)

References 25 publications

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“…Pelisser et al (2012) also utilized a similar performance index of kg/MPa, albeit in an inverse relationship, to evaluate the performance of LWC in this aspect. OPSC without any slag was previously reported (Shafigh et al, 2014) to have higher efficiency compared to conventional concrete and lightweight concrete made with expanded clay. In the present study, it was observed that the use of higher slag content in OPSC further increased the compressive strength efficiency.…”

Section: Compressive Strengthmentioning

confidence: 97%

Feasibility study of high volume slag as cement replacement for sustainable structural lightweight oil palm shell concrete

Alengaram

Jumaat

et al. 2015

Journal of Cleaner Production

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a b s t r a c tThis paper presents a study on the use of high volume slag as a cement replacement material, and waste oil palm shell (OPS) as a lightweight aggregate to produce a sustainable lightweight concrete (LWC). In order to establish the feasibility of such concrete for structural purposes, the first part of the paper deals with the investigation of the mechanical and bond properties of OPS concrete (OPSC) with varying slag content. The results showed that even though an increase in the slag content led to the reduction in the strength, the OPSC with slag as a 60% cement replacement material exhibited compressive and splitting tensile strengths of 25 and 2.3 MPa, respectively, which exceeded the minimum stipulated strength required for structural LWC. In addition, the use of 60% slag in OPSC showed significant benefits in terms of the reduced cement consumption with improvement in the strength efficiency by almost 2-fold compared to that without slag. On the other hand, it was found that the slag content, albeit as high as a 60% cement replacement level, did not show any significant adverse effects on the normalized bond strength, failure mode, bond strength-slip curve and slip at the ultimate bond strength of the OPSC. To further justify the suitability of the OSPC for structural application, the second part of the paper focuses on the experimental investigation of the flexural behaviour of the actual full-scale reinforced concrete beams. From the flexural tests, it was observed that there were no negative effects on the ultimate moment capacity, failure mode and moment-deflection behaviour of the reinforced concrete beams upon cement replacement with up to 60% slag. Therefore, the utilization of high volume slag-lightweight OPSC could be recommended for actual structural purposes.

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Section: Compressive Strengthmentioning

confidence: 97%

Feasibility study of high volume slag as cement replacement for sustainable structural lightweight oil palm shell concrete

Alengaram

Jumaat

et al. 2015

Journal of Cleaner Production

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“…Furthermore, at the low water-cement ratio (w/c = 0.4), the difference of compressive strength with varied gradation is obvious. This is because the particle strength and elastic modulus of lightweight aggregates are both lower than those of mortar, so that the strength behavior of LWAC is mainly controlled by aggregates [14][15][16][17][18][19][20][21][22]. Hence the influence of aggregate gradation on the strength of concrete is extremely obvious.…”

Section: Influence Of Aggregates' Gradation On the Properties Of Concmentioning

confidence: 99%

Influence of Aggregate Gradation on the Engineering Properties of Lightweight Aggregate Concrete

Chen

2018

Applied Sciences

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Expanded shale lightweight aggregates, as the coarse aggregates, were used to produce lightweight aggregate concrete (LWAC) in this research. At the fixed water-cement ratio, paste quantity, and aggregate volume, the effects of various aggregate gradations on the engineering properties of LWAC were investigated. Comparisons to normal-weight concrete (NWC) made under the same conditions were carried out. From the experimental results, using normal weight aggregates that follow the specification requirements (standard gradation) obtained similar NWC compressive strength to that using uniform-sized aggregates. However, the compressive strength of LWAC made using small uniform-sized aggregates was superior to that made from standard-grade aggregates. This is especially conspicuous under the low water-cement ratio. Even though the workability was affected, this problem could be overcome with developed chemical additive technology. The durability properties of concrete were approximately equal. Therefore, it is suggested that the aggregate gradation requirement of LWAC should be distinct from that of NWC. In high strength LWAC proportioning, following the standard gradation suggested by American Society for Testing and Materials (ASTM) is optional.

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“…The term of strength to weight ratio is considered as an efficiency factor [9,14]. The major disadvantage of concrete is only its lower efficiency factor compared to steel.…”

Section: Efficiency Factormentioning

confidence: 99%

“…The major disadvantage of concrete is only its lower efficiency factor compared to steel. However, the efficiency factor of concretes can be improved either by increasing the compressive strength or by reducing the density of concretes [14]. The efficiency factors of OPBCC and OPSC-20 mixes are shown in Table ( 4).…”

Section: Efficiency Factormentioning

confidence: 99%

Effect of replacement of oil-palm-boiler clinker with oil palm shell on the properties of concrete

Aslam

Shafigh

Jumaat

2016

AIP Conference Proceedings

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Abstract. The use of structural lightweight aggregate concrete in structures has several benefits over normal weight concrete, particularly in multi-story buildings. The best way to produce structural lightweight concrete is by using lightweight aggregates. The use of artificial aggregates was minimized because of the high production costs due to huge consumption of energy and raw materials. Therefore, the best alternative to mitigate the negative impact in the construction industry is the use of by-product and waste materials. Oil-palm-boiler clinker (OPBC) and oil palm shell (OPS) are two waste materials from oil palm industry and available in large quantities. Both of these materials are considered as lightweight aggregate. However, OPBC is heavier than OPS. Therefore, concrete containing OPBC as coarse aggregate is considered as semi-lightweight concrete. This paper investigates the effect of the replacement of OPBC by OPS on the compressive strength, density and efficiency factor of concrete. Two mix proportions were prepared; the first concrete mix contain just OPBC as coarse aggregate. However, in second mixture, the OPBC was replaced by 20% OPS by the volume. The test results revealed that low volume substitution of OPBC with OPS can transform the semi-lightweight concrete to lightweight concrete with 28-day compressive strength of about 52 MPa.

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A comparison study of the mechanical properties and drying shrinkage of oil palm shell and expanded clay lightweight aggregate concretes

Cited by 65 publications

References 25 publications

Feasibility study of high volume slag as cement replacement for sustainable structural lightweight oil palm shell concrete

Feasibility study of high volume slag as cement replacement for sustainable structural lightweight oil palm shell concrete

Influence of Aggregate Gradation on the Engineering Properties of Lightweight Aggregate Concrete

Effect of replacement of oil-palm-boiler clinker with oil palm shell on the properties of concrete

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