Analysis of the Compressive Strength of Concrete f'c = 210 kg/cm² with Addition of Calcite Stone at 1%, 2%, and 3% (#1525)

Authors

Carranza Liza, Mario Rene

Guevara Mego, Jose Anderson

Guevara Estela, Dilmer

Abstract

This study aims to evaluate the use of calcite as a natural additive to enhance the axial compressive strength of concrete with a design strength of f'c = 210 kg/cm². Crushed calcite stone was incorporated at 1%, 2%, and 3% of the cement weight. An experimental design with a quantitative approach was used, with a sample of 36 standard cylindrical specimens. Data was collected from laboratory records at a university's concrete laboratory, where tests on both aggregates and concrete were conducted. The results were analyzed using direct observation, university-provided laboratory protocols, and Excel software. The compressive strength was evaluated at 7, 14, and 28 days, showing that the most effective addition was 3%, which increased the concrete strength by 7.92% after 28 days of curing. Additions of 1% and 2% crushed calcite stone increased strength by 0.53% and 5.86%, respectively