Examining the Impact of Sisal Fibers on Mechanical Properties of Foam Concrete

Abstract

This study investigates the impact of sisal fiber reinforcement on the mechanical and durability properties of foam concrete. Sisal fibers of varying lengths (5 mm, 10 mm, and 15 mm) were incorporated at an optimal dosage of 0.75% by weight of cement. Mechanical tests, including compressive, flexural, and tensile strength assessments, were conducted alongside durability evaluations such as water absorption, sulphate attack, chloride penetration, and fire resistance. The results that were obtained indicate that the 10 mm sisal fibers significantly enhanced compressive strength (20.4 Mpa), flexural strength (5.0 Mpa) and tensile strength while reducing chloride permeability and sulphate induced deterioration. However, Fibre addition slightly reduced workability and increased density. Compared to conventional foam concrete, sisal Fibre-reinforced foam concrete demonstrated improved structural performance and durability, making it a viable material for lightweight construction. Despite its benefits, challenges such as Fibre dispersion and fire resistance require further optimization. This research contributes to the development of sustainable, Fibre reinforced construction materials.