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This work investigates the reutilisation of natural (SCB) and modified sugarcane bagasse fibres with aminopropyltriethoxysilane (MSCB) in cementitious composites. The modified fibres were used in the treatment of effluents contaminated with oil-engine. A full factorial design was used to identify the effects of fibre type (natural and modified sugarcane), fibre length (0.6 and 1.2 mm), fibre amount (1 and 2wt%), and fibre condition (before and after oil filtration) on apparent density, water absorption, apparent porosity, ultra-pulse velocity, dynamic modulus, flexural strength and modulus. SCB fibres led to increased apparent density compared to MSCB fibre reinforced composites. The MSCB fibres contributed to reduce the porosity of the composite, leading to higher mechanical properties. The reduced area of MSCB fibres increased the amount of cementitious phase per unit volume which increases the sample strength. Longer fibres (1.2 mm) have a higher surface area, leading to a higher concentration of fibres per unit volume, increasing water absorption by 17%. The amounts of fibres had no significant effect on the mechanical and physical responses. Samples made with 2wt% MSCB fibres of 0.6 mm in length achieved promising results for non-structural applications in civil engineering.

proceedings of the 4th brazilian conference on composite materials

INCORPORATION OF REUSED SUGARCANE FIBRES APPLIED IN THE TREATMENT OF EFFLUENTS CONTAMINATED WITH ENGINE OIL AS REINFORCEMENT OF CEMENTITIOUS COMPOSITES