M.A. Othuman Mydin

Durability performance of foamed concrete strengthened with chemical treated (NaOH) coconut fiber

Utilization of natural fibers in the construction industry will assist to attain a sustainable consumption pattern of building materials. Natural fibers are renewable, cost-effective, low in density, eco-friendly, non-abrasive and readily obtainable anywhere. Coir fiber is not commonly used in construction industry but is often discarded as wastes. Coconut fibres obtained from coconut husk, belonging to the family of palm fiber, is agriculture waste product obtained in the processing of coconut oil. It’s also available in large quantities in Malaysia. Therefore, this research in performed to examine the durability performance of foamed concrete strengthened with chemical treated coconut fiber. The effect of chemical treatment of coconut fiber at different percentages between 2-l0% wt. concentrations was examined expansively. Four parameters have been investigated which were moisture absorption capacity, porosity under vacuum saturation, ultrasonic pulse velocity and performance index. The study reveals th...

Mechanical properties and flexure behaviour of lightweight foamed concrete incorporating coir fibre

This paper presents an experimental investigation on the mechanical properties and flexural behaviour of lightweight foamed concrete (LFC) with added coir fibre as filler. The compressive strength (Pt), tensile strength (Ft), modulus of elasticity (E), ultimate load and crack pattern of the foamed concrete were determined. The coir fibre was added to the foamed concrete mixture at 0.1%, 0.2% and 0.3% of the total weight of cement. Effects of various percentage of coir fibre used on foam concretes mechanical and properties and flexural behaviour were studied and analysed. It was found that the increase percentage of fibre resulted in increase in compressive strength, tensile strength and modulus of elasticity of LFC mixture. LFC with added coir of 0.3% experienced the smallest crack propagation.

Precast self-compacting concrete (PSCC) panel with added coir fiber: An overview

Self-compacting concrete (SCC) is the alternative way to reduce construction time and improve the quality and strength of concrete. The panel system fabricated from SCC contribute to the IBS system that is sustainable and environmental friendly. The precast self-compacting concrete (PSCC) panel with added coir fiber will be overview in this paper. The properties of SCC and coir fiber are studied and reviewed from the previous researches. Finite element analysis is used to support the experimental results by conduction parametric simulation study on PSCC under flexure load. In general, it was found that coir fiber has a significant influence on the flexural load and crack propagation. Higher fiber incorporated in SCC resulted with higher ultimate load of PSCC.