Determinación del contenido óptimo de asfalto adicionado con polvo de cascara de huevo para un concreto asfaltico convencional.

Abstract

Taking into account the sustainable development objectives established by the United Nations, which seek to minimize negative impacts on the environment and promote more sustainable practices for the construction industry, this research work is carried out.

Although the bakery industry in Colombia uses eggs as raw material for the preparation of its products, the leftovers are discarded. This can be used as a reusable material because this shell contains a large amount of calcium carbonate and minerals that improve the mechanical characteristics of bituminous materials (Calcinor, 2018, párr. 6); to achieve this, the material must be crushed in such a way that it is efficient at the time of incorporating it and thus modify the asphalt cement.

Taking into account the above, different laboratory tests are carried out with dosages of 0.5%, 1% and 1.5%, in order to find an optimum percentage to improve the mechanical properties of the asphalt cement. In order to determine such improvement, tests of: ductility, softening point, penetration, viscosity and aging of the asphalt were carried out, however, with these results we seek to determine the stability and flow in the optimized asphalt mixture. As a result of these tests, it was determined that the optimum percentage for the characterization of asphalt cement is 1.5%. To conclude the investigation, the asphalt mixture dosage that obtained the best performance was selected, and this was the 5.5%, because in the Marshall design method tests, the other dosages were compared and the selected one obtained better results in the percentage of voids, flow and stability/flow.