Evaluation of the Compressive Strength of Concrete 175 Kg/cm² Adding Coffee Husk

Abstract

The objective of this research is to evaluate the compressive strength of concrete f'c=175 kg/cm² with the improvement of Whole Coffee Husks (CCE) and Ground Coffee Husks (CCM) in percentages 0.5%, 1.5% and 2.5% with respect to the weight of the fine aggregate in the concrete mix. The investigation is of the experimental type with a quantitative approach, where a total of 63 units of standardized cylindrical concrete specimens are sampled. The instruments used for data collection were based on the ASTM regulations for carrying out laboratory tests for aggregates, preparation of test tubes and breaking them, for data analysis Excel spreadsheets were used.In the results it was obtained that the optimal improvement is 0.5% in the case of the CCE and 1.5% in the case of the CCM, since they improve the compressive strength of the concrete at 28 by 8.69% and 3.68% respectively. days of curing On the other hand, the additions of 1.5% and 2.5% of CCE and 0.5% and 2.5% of CCM, generated a decrease in resistance of 12.45%, 23.42%, 13.98% and 29.59% respectively.