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Effect of Ramie Fibre on Mechanical Properties of Lightweight Foamed Concrete
Md Azree Othuman Mydin1.
ABSTRACT
Lightweight foamed concrete (LFC) is good in compression but poor in
tension, as it produces multiple microcracks. LFC cannot withstand the
tensile stress induced by applied forces without additional reinforcing
elements. This study was conducted to assess the potential utilisation of
ramie fibre reinforced LFC in terms of its mechanical properties. Density
of 600 kg/m3 was cast and tested with 4 different weight fractions of ramie
fibre, which were 0.2, 0.4, 0.6 and 0.8 %. The mechanical properties
examined were compressive strength, flexural strength and tensile strength.
The results revealed that the addition of 0.6 % of ramie fibre into LFC aids
to give the best results for the compressive strength, flexural strength and
splitting tensile strength. The existence of ramie fibre in LFC facilitated in
evading the promulgation of cracks in the plastic state in the cementitious
matrix when the load was applied.
Affiliation:
- Universiti Sains Malaysia, Penang, Malaysia
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