Abstract
This study aims at the improvement of traditional lime-mortars characteristics, using Posidonia Oceanica (PO) marine plant fibres, subjected to alkaline and hydrothermal surface treatments, to decrease their hygroscopicity, improve their durability in alkaline environments and improve their adherence properties. Mixtures of lime mortar with PO fibres were prepared and different fresh and hardened state properties of the composites were evaluated. The results reveal that both treatments influenced the fibres’ elastic properties, and the presence of PO fibres improved the stability of the lime mortars. The short hydrothermal treatment acted in favor of the tested properties with 58% and 55% increased flexure and compressive strength, and it is recommended for improving the performance of lime mortars reinforced with PO fibres.
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