Análisis comparativo de la resistencia a compresión del hormigón tradicional, con hormigón al emplear zeolita natural en reemplazo parcial del cemento

Abstract

The present experimental project treat about the elaboration of concrete with zeolite and the zeolite-lime mixture as partial substituting materials of the cement, in the levels of 10%, 20% and 30%, and a traditional concrete with a compressive strength of 240 kg/cm². In the first place the material was analyzed, with the purpose of realizing the design of the traditional concrete mix, using the method of the optimal density which allows obtaining the dosage of the materials. In the concrete mixtures, in the fresh state the properties of workability consistency and density were evaluated, in the hardened state the compressive strength and its density were evaluated. In fresh state, the concrete with the substitute materials proved to conserve the workability, to vary the settlement and to diminish the density with respect to the traditional concrete. With respect to the resistance it was verified that the concrete elaborated with zeolite as substitute of 10% of the cement increases the resistance in the different ages analyzed and with the zeolite-lime mixture as a substitute of 10% of the cement decreases the resistance compared to the traditional concrete, but remains within the established limits; the opposite happens when the percentages of substitution are 20% and 30%, since the compressive strength with these percentages does not reach the design resistance.