Effect of Fibre Treatment on the Physical and Mechanical Properties of Kenaf Fibre Reinforced Blended Cementitious Composites

Research output: Contribution to journalArticle

Abstract

Kenaf (Hibiscus Cannabinus L.) fibres are thermally and alkali treated to enhance the interfacial bond between the fibre-matrix, the mechanical properties of the fibre itself, the fibre-reinforced thermally activated alum sludge ash (AASA) and the nanosilica (NS) blended cementitious composites. The tensile strength of treated fibres increases by approximately 160% compared to untreated fibres after 72-h immersion in a 6% optimum concentration of mild sodium bicarbonate (NaHCO3). The surface characteristic with refined crystallinity are confirmed by morphology observation from a scanning electron microscope (SEM) and X-ray diffraction (XRD). The treated KF reinforced AASA and NS blended cementitious composite (KFRBCC) blended with 50% AASA, and 4% NS had optimum mechanical properties, with an increase of 42.1% in the compressive strength compared to that of the control. The results suggest that fibre treatment and the addition of blended pozzolan significantly improve the physical and mechanical properties of fibre reinforced cementitious material.

Original languageEnglish
JournalKSCE Journal of Civil Engineering
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Kenaf fibers
Ashes
Physical properties
Mechanical properties
Fibers
Composite materials
Sewage sludge
Pozzolan
Sodium bicarbonate
Fiber reinforced materials
Compressive strength
Tensile strength
Electron microscopes
Scanning
X ray diffraction

Keywords

  • fibre-reinforced composite
  • kenaf fibre
  • nanosilica
  • physical and mechanical properties
  • thermal and chemical treatment
  • thermally activated alum sludge ash

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

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title = "Effect of Fibre Treatment on the Physical and Mechanical Properties of Kenaf Fibre Reinforced Blended Cementitious Composites",
abstract = "Kenaf (Hibiscus Cannabinus L.) fibres are thermally and alkali treated to enhance the interfacial bond between the fibre-matrix, the mechanical properties of the fibre itself, the fibre-reinforced thermally activated alum sludge ash (AASA) and the nanosilica (NS) blended cementitious composites. The tensile strength of treated fibres increases by approximately 160{\%} compared to untreated fibres after 72-h immersion in a 6{\%} optimum concentration of mild sodium bicarbonate (NaHCO3). The surface characteristic with refined crystallinity are confirmed by morphology observation from a scanning electron microscope (SEM) and X-ray diffraction (XRD). The treated KF reinforced AASA and NS blended cementitious composite (KFRBCC) blended with 50{\%} AASA, and 4{\%} NS had optimum mechanical properties, with an increase of 42.1{\%} in the compressive strength compared to that of the control. The results suggest that fibre treatment and the addition of blended pozzolan significantly improve the physical and mechanical properties of fibre reinforced cementitious material.",
keywords = "fibre-reinforced composite, kenaf fibre, nanosilica, physical and mechanical properties, thermal and chemical treatment, thermally activated alum sludge ash",
author = "R. Ahmad and Roszilah Hamid and Osman, {Siti Aminah}",
year = "2019",
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AU - Ahmad, R.

AU - Hamid, Roszilah

AU - Osman, Siti Aminah

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Kenaf (Hibiscus Cannabinus L.) fibres are thermally and alkali treated to enhance the interfacial bond between the fibre-matrix, the mechanical properties of the fibre itself, the fibre-reinforced thermally activated alum sludge ash (AASA) and the nanosilica (NS) blended cementitious composites. The tensile strength of treated fibres increases by approximately 160% compared to untreated fibres after 72-h immersion in a 6% optimum concentration of mild sodium bicarbonate (NaHCO3). The surface characteristic with refined crystallinity are confirmed by morphology observation from a scanning electron microscope (SEM) and X-ray diffraction (XRD). The treated KF reinforced AASA and NS blended cementitious composite (KFRBCC) blended with 50% AASA, and 4% NS had optimum mechanical properties, with an increase of 42.1% in the compressive strength compared to that of the control. The results suggest that fibre treatment and the addition of blended pozzolan significantly improve the physical and mechanical properties of fibre reinforced cementitious material.

AB - Kenaf (Hibiscus Cannabinus L.) fibres are thermally and alkali treated to enhance the interfacial bond between the fibre-matrix, the mechanical properties of the fibre itself, the fibre-reinforced thermally activated alum sludge ash (AASA) and the nanosilica (NS) blended cementitious composites. The tensile strength of treated fibres increases by approximately 160% compared to untreated fibres after 72-h immersion in a 6% optimum concentration of mild sodium bicarbonate (NaHCO3). The surface characteristic with refined crystallinity are confirmed by morphology observation from a scanning electron microscope (SEM) and X-ray diffraction (XRD). The treated KF reinforced AASA and NS blended cementitious composite (KFRBCC) blended with 50% AASA, and 4% NS had optimum mechanical properties, with an increase of 42.1% in the compressive strength compared to that of the control. The results suggest that fibre treatment and the addition of blended pozzolan significantly improve the physical and mechanical properties of fibre reinforced cementitious material.

KW - fibre-reinforced composite

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KW - nanosilica

KW - physical and mechanical properties

KW - thermal and chemical treatment

KW - thermally activated alum sludge ash

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