The growing demand for construction materials, the search for sustainable and environmentally friendly alternatives, and the new vision towards a circular economy have led to the increasing use ofagriculturalwaste to obtain new value-added materials. The present research sought to elaborate and characterize bricks manufactured with addition of different concentrations of rice husk ash (5%, 10% and 15%). The average content of silicon oxide (SiO2) obtained in the rice husk ash was determined by gravimetry and then the bricks were manufactured according to the established concentrations. The bricks obtained were evaluated by means of compression, absorption,and warpagetests according to the parameters established in the NTP-399.61 for concrete bricks. The results showed that the average content of SiO2in the rice husk ash was 79.08%.Likewise, in the compression and absorption tests it was ...