Currently, alternative materials are being sought to help strengthen concrete structures, while promoting sustainable practices to mitigate pollution caused by conventional materials. The objective of this study is to examine the mechanical properties of compressive and tensile strength of concrete reinforced with sheep wool and rice husk ash, compared to conventional concrete. An experimental methodology was used to carry out this research. Initially, the fibres and other materials for the production of concrete were obtained. Then, the correct dosage was established in order to proceed with the preparation of the samples. This research shows the distinctive characteristics of the fibres and the workability they provide. Finally, the corresponding tests were carried out in the laboratory after 7, 14 and 21 days of curing. Finally, results were obtained with an optimum percentage of fibre addition in concrete, 1.5% for tensile strength and 25% for compressive strength; also a slump of 4.2 cm.