Compressive strength of a concrete f'c 210 Kg/cm2 made with ground glass fine aggregate and recycled iron (#527)

Authors

Jara-Orozco, Johann

Rafael-Bustamante, Keyla

Leiva-Piedra, Jorge Luis

Abstract

Concrete is the second most used material in construction, and its production requires a large amount of natural aggregates, which has a significant impact on these resources and the ecosystems where they are collected. In addition, the poor management of glass and iron waste is a major problem for cities. The present study sought to evaluate the compressive strength of a concrete f'c 210 Kg/cm2 made with ground glass and recycled iron. For this purpose, 6 treatments with additions of 15%, 20%, and 25% of ground glass and recycled iron, respectively, and a standard sample, with 7, 14, and 28 days of curing, were used to evaluate its physical properties (workability, slump, and exudation) and its compressive strength. The results showed that, in terms of physical properties, the different levels of addition, both ground glass and recycled iron, showed good and very good workability; on the other hand, all the treatments, except C1, showed slump values above those shown by the standard sample; in the case of exudation, the highest percentages of water lost were shown by the 15% ground glass treatments and all the additions of recycled iron. For compressive strength, the treatments with the best values were 20% and 25% iron, showing an increase in this parameter of 5.98% and 17.99% compared to the standard sample. It was concluded that, of the inputs used, recycled iron has potential as an input for the production of concrete, unlike ground glass, as it shows the best values in the parameters evaluated.