Resumen
Chile is undergoing a transition process towards economic development through the last decade. Just as it has happened previously in other countries, thisdevelopment can have a serious impact on the environment. In both senses the Construction Industry plays a very important role. In this context, the paperpresents the results of a research where was used fly ash for lightweight aggregates production to structural concretes. The result of these research allowedto comprobe the technical viability to fabricate these products. The degree of Sustainability of the material development was evaluated with a methodologywhat alloved to generate a stamp of certification or ?green seal? to certify construction materials, aspect also detail it in this paper. Like a conclusion, thispaper presents two ways to advance toward the sustainability, establishing lineaments to point at a sustainable construction by means of the application ofclean technologies. In this sense it obtain develop an artificial aggregates with adequate physical and mechanics properties to use in structural lightweightconcretes, on the other hand, was development a tool to the certify the environmental performance, evaluating the associates impacts during the life cycleof the construction materials.