Usage of palm kernel shell as lightweight aggregate in the development of moderate strength lightweight concrete

U.Johnson Alengaram, . and M. Zamin Jumaat, . and Hilmi Mahmud, . (2008) Usage of palm kernel shell as lightweight aggregate in the development of moderate strength lightweight concrete. [Proceedings Paper]

Malaysia is the largest palm oil producing country in the world. The wastes produced after extracting palm oil from palm fruits known as palm kernel shell PKS are available in large quantities in thispart of world. An investigation bas been conducted to study the mechanical properties of lightweight aggregate concrete using PKS as lightweight aggregates to produce grade30 strength with concrete density of about 1900 kg/m3. The properties of both PKS and crushed granite aggregates were compared. The cementitious materials include 5 fly ash as cement replacement and 10 silica fume by mass of the cement. The concrete produced using PKS referred to here after as palm kernel shellcrete PKSC and the properties were compared with properties of normal weight concrete NWC of grade 30 produced using crushed granite aggregates. The fresh concrete properties such as density and workability were compared. Also the mechanical properties of both PKSC and NWC were compared. It has been found that PKSC has produced workable concrete and the compressive strength in the range of about 35 MPa was obtained within 90 days. The addition of 10 silica fume has effect on both workability and strength. The as-cured density of PKSC was found in the range of 1890-1920 kg/m3. In addition to compressive strength the other mechanical properties studied include flexural splitting tensile and young;s modulus of both PKSFC and NWC. The young;s modulus of PKSC was about 47 as that of NWC. The flexural and splitting tensile strengths of PKSC were found in the range of 10 and 5 respectively of the 28-day compressive strengths. The density reduction of PKSC was 20 compared to NWC. Thus it has been found that using PKS as lightweight aggregates grade 30 concrete can be produced.

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Abstract

Malaysia is the largest palm oil producing country in the world. The wastes produced after extracting palm oil from palm fruits known as palm kernel shell PKS are available in large quantities in thispart of world. An investigation bas been conducted to study the mechanical properties of lightweight aggregate concrete using PKS as lightweight aggregates to produce grade30 strength with concrete density of about 1900 kg/m3. The properties of both PKS and crushed granite aggregates were compared. The cementitious materials include 5 fly ash as cement replacement and 10 silica fume by mass of the cement. The concrete produced using PKS referred to here after as palm kernel shellcrete PKSC and the properties were compared with properties of normal weight concrete NWC of grade 30 produced using crushed granite aggregates. The fresh concrete properties such as density and workability were compared. Also the mechanical properties of both PKSC and NWC were compared. It has been found that PKSC has produced workable concrete and the compressive strength in the range of about 35 MPa was obtained within 90 days. The addition of 10 silica fume has effect on both workability and strength. The as-cured density of PKSC was found in the range of 1890-1920 kg/m3. In addition to compressive strength the other mechanical properties studied include flexural splitting tensile and young;s modulus of both PKSFC and NWC. The young;s modulus of PKSC was about 47 as that of NWC. The flexural and splitting tensile strengths of PKSC were found in the range of 10 and 5 respectively of the 28-day compressive strengths. The density reduction of PKSC was 20 compared to NWC. Thus it has been found that using PKS as lightweight aggregates grade 30 concrete can be produced.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. GE90 M3I61 2008 Call Number
AGROVOC Term:	Palm kernels
AGROVOC Term:	Shell
AGROVOC Term:	Silica
AGROVOC Term:	Mechanical properties
AGROVOC Term:	Palm oils
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11763

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