Wood fibres as additives in mortars: a sustainable reinforcement

Abstract In mortars, the use of fibres has been diachronically a commonly used technique. Ancient Greece, wood and straw were particularly to increase volume stability in clay lime mortars. Overtime, with evolution technology, natural replaced by modern materials like polypropylene, steel, glass carbon fibres. Recently, climate change strong demand for independence from non-renewable mineral resources have urged search alternative ways utilize bio-materials produce innovative, high value-added products. The waste material, coming loggings or trunks mechanical processing, constitutes valuable bio-degradable, non-toxic material low environmental impact that could be utilized as reinforcements advanced polymer composites. current study, two widely available species (black pine beech) (1-2 cm length). added lime-based cement-based mortars proportion 1.5% v/v mortar. Physical, thermal properties tested at age 28 90 days, while fresh state, workability mixtures was recorded. It found traditional systems, formulations black required higher amount water same probably due hygroscopicity This not case systems. Small reduction recorded, well an capillary absorption bio-fibres reinforced samples. Thermal conductivity improved porosity increase. all cases, shape samples retained even after fracture crack formation. Between used, gave more beneficiary results. general, wood-fibres revealed potential upgrade lime- performance further promoted construction sector.