In this sense, it can be stated that mortars made with this type of recycled aggregates have, in comparison with traditional mortars made with natural aggregate, a higher coefficient of capillary water absorption [16], higher shrinkage during setting [17], lower mechanical strength [18; 19], higher porosity [20] and lower durability [21]. Several researchers are working to improve the properties of these mortars made with recycled aggregates. In this sense, one of the main alternatives is to incorporate reinforcement materials during the mixing process of these mortars [22]. These reinforcing materials are generally added in the form of fibers that can be synthetic or natural [23]. The most commonly used synthetic fibers are glass fibers [24], basalt [25], steel [26], carbon [27] and polypropylene [28], which have demonstrated their technical feasibility to improve the mechanical properties of masonry mortars, especially by increasing their flexural strength and decreasing shrinkage [29]. For their part, the most commonly used natural fibers in the manufacture of mortars are hemp [30], coconut [31] and wood [32] fibers, which have also allowed improving the physical and mechanical properties of masonry mortars, although they generally experience lower durability and greater deterioration with the passage of time [33]. This work is framed within the contributions that study masonry mortars reinforced with synthetic fibers, and more specifically with aramid fibers (Kevlar). Aramid fibers have good resistance to corrosion and fatigue, which has allowed their application as a reinforcement material in structural construction elements [34; 35]. In addition, they have a very good strength/weight ratio, which is approximately five times higher than that of steel [36], and good thermal performance, which enables their use in fire protection studies [37]. On the other hand, these types of fibers are characterized by a high Young's modulus and resistance to abrasion, which together with their ability to form fabrics has allowed extending their industrial possibilities, being used in aerospace, ballistic, composites and cable applications, among others [38]. In recent years, the number of studies related to the incorporation of these types of reinforcement fibers in construction mortars has increased. Thus, [PERSON] et al. observed that aramid fiber presented better properties than carbon fiber to improve the mechanical performance of cement mortars [39], and, on the other hand, [PERSON] et al. managed to improve the energy absorption capacity, flexural strength and decrease cracking by incorporating polyolefinaramid fibers in the matrix of asphalt mortars [40]. Thus, aramid fiber is positioned with one of the most feasible reinforcement materials to improve the mechanical properties of masonry mortars. The main objective of this work is to evaluate the physical-mechanical properties of cement mortars made with recycled concrete aggregate and reinforced with aramid fiber. The aim is to improve the technical performance of mortars made with recycled aggregates and their possibilities of use, widening their field of application and bringing their properties closer to those achieved by traditional mortars made with natural aggregates. An experimental campaign was developed where two different dosages were used for each type of mortar, in such a way that it is intended to know which one is more favorable for its application in the building according to the results obtained for the different tests proposed.