Estabilización de Suelo Arcilloso con Residuos de Concreto para el Mejoramiento de la Subrasante de una Vía: Stabilization of Clay Soil with Concrete Waste for the Improvement of a Road Subgrade

Estabilización de Suelo Arcilloso con Residuos de Concreto para el Mejoramiento de la Subrasante de una Vía

Abstract

The aim of this work is to analyse, from a technical and scientific perspective, the potential for stabilising clayey soils by incorporating recycled concrete waste, with emphasis on its application to the improvement of road subgrades, reviewing the literature on the effect of this type of stabilisation on some geotechnical properties such as the CBR index, the plasticity index, the maximum dry density and the resilience modulus. The results show that the incorporation of recycled concrete achieves a considerable improvement in the bearing capacity of the soil and a reduction in soil plasticity, thus obtaining a structural behaviour suitable for use in the subgrade. The most effective proportions vary between 10% and 25%, depending on the characteristics of the soil and the residue used. Likewise, successful field application experiences are identified that confirm its technical, economic and environmental viability, positioning this technique as a sustainable alternative in modern road engineering. It is concluded that the use of recycled concrete not only allows the reuse of waste materials from the construction itself, but also translates into an increase in the quality of road infrastructure, thus promoting more environmentally friendly practices.