Adición de micro-nano burbujas de aire al agua de amasado y su influencia en las propiedades mecánicas del hormigón

Abstract

The industry is currently developing additives that improve the properties of concrete, introducing today a segment known as nano-additives, which work by directly altering the microstructures that are generated in the cement mixture, thus granting different mechanical properties. as aesthetic. The most important objective is to evaluate the influence of adding micro-nano air bubbles to the mixing water on the mechanical properties of concrete in the hardened state. To achieve this, an analysis of the materials used was carried out in the laboratory, obtaining their physical-chemical and physical-mechanical properties, as appropriate, in order to design the concrete mixture with them, then using a multiphase pump, micro -nano bubbles of air to the water to then mix together with the stone materials and cement, obtaining a concrete with less workability than that without the addition of said nanoparticles, then experimental and control cylindrical specimens were made that were tested at different ages, in compression simple and indirect traction. Results were obtained that showed that the addition of micro-nano air bubbles to the mixing water of the concrete gives us an increase in the mechanical properties of this compound in a percentage of 15.9 and 17.7 for resistance to simple compression and traction, respectively. With which it was concluded that, by adding this type of nanoparticles to the composition of the concrete, it improved its behavior when subjected to compressive and tensile stresses.