Investigation of Thermal, Mechanical and Transport Properties of Ultra-Lightweight Foamed Concrete (ULFC) Strengthened with Alkali Treated Banana Fibre

Authors

  • Mohammed Hassan Nensok School of Housing, Building and Planning, Universiti Sains Malaysia, 11800, Penang, Malaysia
  • Md Azree Othuman Mydin School of Housing, Building and Planning, Universiti Sains Malaysia, 11800, Penang, Malaysia
  • Hanizam Awang School of Housing, Building and Planning, Universiti Sains Malaysia, 11800, Penang, Malaysia

DOI:

https://doi.org/10.37934/arfmts.86.1.123139

Keywords:

Foamed concrete, thermal properties, banana fibre, alkali treatment

Abstract

Traditionally, Ultralightweight Foam Concrete (ULFC) is primarily used to replace filling excavations, ditch restoration and underground channels, because of their high porosity, water absorption and low strength. Yet, ULFC is characterized by excellent thermal properties and could be an alternative for sustainable energy-efficient building material. This study investigates the properties of an ULFC strengthened with alkali-treated banana fibre. The low density ULFC of 600kg/m3 was fabricated and strengthened with alkali-treated banana fibre. Fibre volume fraction of 0.25%, 0.35%, 0.45% and 0.55% were compared to the unreinforced specimens, serving as the control specimen (no fibre addition). Mix proportioning of 1:1.5:0.45 of cement, sand, and water was respectively adopted throughout the mix. The alkali treated banana fibre strengthened ULFC was tested for compressive strength, sorptivity and thermal properties. Morphology of the treated fibre and ULFC composites was studied using SEM micrograph. The result depicts that ULFC exhibited the optimum compressive strength of 1.1604N/mm2 with the fibre volume fraction of 0.35%. Sorptivity or rate of water absorption was testified to upsurge, after 24 hours duration at fibre volume fraction of 0.55%, recording a 56.12% increment compared to the control specimen. The finding displays that at the highest-fibre volume fraction of 0.55%, thermal conductivity and diffusivity decrease by 13.17% and 28.16%, correspondingly, whiles the specific heat capacity increases to 37.17% all compared with unreinforced specimens. SEM images reveal that the presence of lumen and the nature of porous and fibrous alkali-treated banana fibre. Hence, it is endorsed that ULFC produced with alkali-treated banana fibre should be utilized as an infill material for composite system.

Author Biographies

Mohammed Hassan Nensok, School of Housing, Building and Planning, Universiti Sains Malaysia, 11800, Penang, Malaysia

nensok2007@yahoo.com

Md Azree Othuman Mydin, School of Housing, Building and Planning, Universiti Sains Malaysia, 11800, Penang, Malaysia

azree@usm.my

Hanizam Awang, School of Housing, Building and Planning, Universiti Sains Malaysia, 11800, Penang, Malaysia

hanizam@usm.my

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Published

2021-08-16

How to Cite

Nensok, M. H. ., Othuman Mydin, M. A., & Awang, H. (2021). Investigation of Thermal, Mechanical and Transport Properties of Ultra-Lightweight Foamed Concrete (ULFC) Strengthened with Alkali Treated Banana Fibre. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 86(1), 123–139. https://doi.org/10.37934/arfmts.86.1.123139

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