At present, most of the buildings in the country are constructed without any technical criteria, omitting different factors that should be the subject of analysis to have safer and more durable structures over time, this type of buildings are called informal or self-construction, which use aggregates from different quarries, whose physical, chemical and mechanical properties are not known; in addition, many times for the elaboration of structural concrete hormigon is used that is a combination of gravel and sand in similar proportions as replacement of the aggregates classified because it is a more economic material, but that does not generate the levels of resistance desired in the concrete. The purpose of the investigation was to determine the optimal proportion of aggregates in the hormigon and at the same time their best dosage with cement, taking into account the expected resistance...