The study of sustainable construction materials is getting attention, since the materials must be ecological, recyclable and renewable to generate a positive impact on the environment as a substitute for the construction materials currently used in rural areas of Huancayo. The objective of this research is to determine a sustainable material with resistant mechanical properties, such as reinforced blocks with Agave americana L fiber. The block components were sand, clay and silt, in order to evaluate its behavior, 5 dosages of fiber were proposed: 0%, 0.25%, 0.5%, 0.75% and 1%, these were expressed with respect to the total weight of the sample, on the other hand, the fiber used was cut to obtain a length of 25mm. Strengths were evaluated using the simple compression method, the Brazilian diametral compression tensile method and the modulus of rupture method. The result for the most opti...