Performance of high strength lightweight concrete using palm wastes

Huda, Md Nazmul and Jumaat, Mohd Zamin and Islam, Abul Bashar Mohammad Saiful and Al-Kutti, Walid Abubaker (2018) Performance of high strength lightweight concrete using palm wastes. IIUM Engineering Journal, 19 (2). pp. 30-42. ISSN 1511-788X

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Official URL: https://doi.org/10.31436/iiumej.v19i2.919

Abstract

The performance of high strength structural lightweight concrete (LWC) using palm wastes, oil palm shell (OPS) as well as palm oil clinker (POC) is of foremost concern. Existing literature used either OPS or POC individually for production of LWC. In this study, both OPS and POC have been put together as coarse aggregate on the way to see the improvement of mechanical properties of waste-based LWC. Regular coarse aggregate has been fully replaced by OPS and POC in the concrete. This structural-grade, lightweight concrete is called palm shell and clinker concrete (PSCC). A series of OPS and POC mixtures have been investigated aimed at identifying better performance. The quantity of OPS and POC mix has been varied as 30, 40, 50, 60 and 70%. Evaluated mechanical properties of PSCC include density, workability, compressive strength at different ages, flexural strength, splitting tensile strength as well as modulus of elasticity. It is revealed that the proposed PSCC has extensive potential in terms of high compressive strength and good material behavior to perform as a better LWC. The study could offer structural lightweight concrete of compressive strength up to 46.47 MPa that is 30.5% higher than the control mix (P100). The usage of 50% OPS to 50% POC coarse aggregate by vol. in the concrete mix is found to be the optimum mix. Furthermore, simple correlation equations have been developed that can be used to predict the compressive strength, splitting tensile strength, flexural strength, modulus of elasticity and ultrasonic pulse velocity of the lightweight concrete using POC. © 2018, International Islamic University Malaysia-IIUM. Prestasi struktur konkrit ringan (LWC) berkekuatan tinggi menggunakan sisa sawit, iaitu daripada minyak kulit kelapa sawit (OPS) dan juga mendakan (klinker) minyak kelapa sawit (POC) adalah keprihatinan utama. Kajian sedia ada telah mengguna pakai sama ada OPS atau POC secara berasingan bagi menghasilkan LWC. Dalam kajian ini, kedua-dua OPS dan POC telah digabungkan sebagai agregat kasar bagi mengkaji pembaikan pada ciri-ciri mekanikal sisa LWC. Agregat kasar tetap telah digantikan sepenuhnya dengan menggunakan OPS dan POC dalam konkrit. Struktur gred konkrit ringan ini telah dinamakan sebagai kulit kelapa sawit dan konkrit mendakan klinker (PSCC). Satu siri campuran OPS dan POC telah dikaji bagi mengenal pasti prestasi terbaik. Kuantiti campuran OPS dan POC telah diubah kepada 30, 40, 50, 60 dan 70%. Ciri-ciri mekanikal yang dikaji pada PSCC ini adalah ketumpatan, kebolehkerjaan, kekuatan mampatan pada umur berlainan, kekuatan lenturan, kekuatan tegangan pecahan, serta keanjalan modulus. Hasil menunjukkan PSCC ini mempunyai potensi luas dari segi kekuatan mampatan yang tinggi dan struktur material yang baik sebagai LWC terbaik. Kajian ini menawarkan struktur konkrit ringan berkekuatan mampatan sehingga 46 MPa iaitu sebanyak 31% lebih baik daripada campuran kawalan. Penggunaan 50% OPS kepada 50% POC agregat kasar secara vol. dalam campuran konkrit adalah campuran optimum. Tambahan pula, korelasi mudah telah dibangunkan bagi menjangkakan dengan mudah kekuatan mampatan, kekuatan tegangan pecahan, kekuatan lenturan, keanjalan modulus dan halaju signal ultrasonik konkrit ringan.

Item Type: Article
Uncontrolled Keywords: High strength; Lightweight aggregate concrete; Oil palm shell; Palm shell clinker; Palm waste; Structural concrete
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 07 Aug 2019 04:47
Last Modified: 07 Aug 2019 04:47
URI: http://eprints.um.edu.my/id/eprint/21857

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