cisco de café como posible material sustituto de arcilla en la fabricación de materiales cerámicos de construcción en el área metropolitana de cúcuta

The ceramic industry is a representative sector for the economy of Norte de Santander (Colombia). Despite the recognition of the quality of the products manufactured nationally and internationally, the development of the sector is still in the consolidation phase if it is compared with the major references in the world, including the Spanish and Italian ceramic industry. In the search for alternatives that allow entering this global dynamic of being recognized, the work team has carried out some activities aimed at applying the concept of the circular economy (reuse of waste to production systems) to the regional ceramic process. In this particular case, the reuse of coffee husk (waste from regional agro-industry) as a substitute for clay material in the manufacture of ceramic construction materials has been proposed. The experimental work was developed at the laboratory level, using extrusion as a forming technique. The raw materials were characterized by fluorescence and X-ray diffraction (XRF / XRD), as well as by thermal analysis (TG / DSC). The technological properties of the ceramic evaluated were the linear shrinkage of drying / firing, percentage of water absorption, mechanical resistance to bending and resistance to deep abrasion. To the material with the best ceramic physical behavior, the thermal conductivity was evaluated by means of a transient heat flow method. The results obtained show the potential of the coffee husk to reduce the thermal conductivity of the material and the caloric contribution to the system. The use of coffee husk allows to obtain ceramics for use as coatings and residential type pavement