Evaluación mecánica de bordillos prefabricados elaborados con hormigón que contiene áridos reciclados provenientes de elementos estructurales usados como sustituto parcial del árido natural

Abstract

The objective of this research project is to carry out a comparative study of the physical and mechanical properties of conventional concrete versus recycled concrete (HR). The recycled concrete will be manufactured based on waste from demolished structural elements. For this reason, the purpose of this work is to advance in the research, technical and experimental field based on INEN, ACI and ASTM standards to propose a standard in Ecuador for the use of RA in the design of concrete and thus contribute to the care of the environment, reducing land degradation. For the present development, an initial dosage with certain specifications is taken as a base and then the percentage of substitution of the natural coarse aggregate for recycled coarse aggregate will be varied, thus having 5 different dosages which will serve to arrive at this comparison, and we will proceed to evaluate the performance of the recycled concrete in laboratory tests to flexion and compression at 28 days of curing. With the tests carried out at the final product level, it was verified that, in the manufacture of curbs, the substitution of the natural coarse aggregate for recycled coarse aggregate is suitable and complies with the requirements and demand for use governed by NTE INEN 3132 regulations in the country. Of all the curbs tested, positive results were obtained both in terms of compressive strength, bending and wear, thus proposing a possible solution and implementation of recycled aggregates as a new material for the constitution of concrete, thus becoming a renewable and eco-friendly idea for the environment.