Estudio de plástico reciclado como agregado en la elaboración de concreto con fibras de acero

Abstract

This project was carried out by obtaining and classifying plastic that was replaced by a percentage of fine aggregate in the preparation of concrete mixtures with different dosages of plastic and steel fibers (5%, 10%, 15%), (Dramix 4D 55 / 60BG), for a total of forty-two (42) cylinders and fourteen (14) joists with Argos cement, all this complying with all the current parameters and specified in the Colombian regulatory framework.

Through compression tests, the mechanical properties were determined, such as the resistance to compression, in order to compare the results that the conventional mixtures yielded with respect to those proposed with plastic and the addition of steel fiber; In addition, the flexural test was carried out at the age of twenty-eight (28) days, which determined the modulus of rupture that the standard mixtures presented with respect to those proposed and to observe if there is an improvement in their behavior. The foregoing taking into account the parameters established in the Colombian technical standard.

The main focus of the research is to test and analyze the behavior of concrete with plastic and steel fiber as a replacement in percentage of fine aggregate and see if it is suitable for use in buildings. For the dosages that were proposed and which were analyzed in three different ages (7, 14, 28 days), the results were obtained, where none of the samples presented a greater resistance than conventional concrete.

It should be noted that the mixture with a proportion of 5% with steel fiber and plastic had a more favorable behavior than the other percentages, due to the little removal of fine material its resistance was not so low, however, being below the conventional it remains unacceptable for approval on structural issues.