Análisis de la resistencia a compresión del hormigón al reemplazar parcialmente el agregado fino por escoria siderúrgica de horno eléctrico

Abstract

The objective of the experimental work was to analyze the results obtained through tests of the ZHIMADZU compression machine, model CONCRETO 2000X for specimens of 100mm diameter by 200mm height with partial substitutions of 0%, 10%, 20% and 30% of fine aggregate by steel slag for ages of 14, 28 and 60 days of age in addition to undergoing death and death by 60 days of age, to determine how it influences the resistance to compression. In order to carry out the concrete tests, the analysis of the aggregates in the elaboration of the concrete for the design of the mixture with a density of 240 kg / cm2 was used, reaching to determine the granulometry, the loose bulk density, the compacted bulk density, Relative density and absorption capacity as described in Standards NTE INEN 696, 858, 856, 857 and 156. Once the appropriate dosage was made, 96 specimens were prepared for their designs. The specimens were processed to perform the compression tests at 14, 28 and 60 days of age, obtaining information on how to influence the steel slag in the compressive strength in cement in its different percentages of magnesium sulfate replacement. MgSO4, under the criterion of ACI318-14, where it was possible to notice the disintegration of the cement paste, the increase in its dimensions, the appearance of microcracks and a great loss of resistance after having been subjected to cycles of immersion, drying and cooling in magnesium sulfate.