Resistencia a la compresión axial del concreto f'c=210 y 280 kg/cm² al reemplazar agregado con origen de roca volcánica

In the province of San Pablo, due to population growth, there has been an increase in the construction of buildings using concrete; however, these buildings are affected by the scarce availability of aggregates, so they resort to neighboring areas. There is also the El Balcón quarry near the city, from which only large stone is extracted for foundations and there are still no studies to use its aggregate in concrete. It was confirmed that the extracted material is of volcanic origin through a petrographic study; thus, the present research aims to determine the axial compressive strength of concrete, replacing aggregate from hills with volcanic rock origin, for a design f'c=210 and 280 kg/cm^2. For this purpose, physical-mechanical tests were carried out on the aggregates (river and volcanic rock), mix designs, concrete specimens and axial compressive strength tests. The concrete with volcanic rock, for a design f¨c=210 kg/cm² reached 331.22 kg/cm² (28 days); for a design f¨c=280 kg/cm² it obtained 384.57 kg/cm² (28 days). Its resistance increased by 50.95% and 33.23% in relation to the standard sample, for a design of 210 and 280 kg/cm² respectively; being an aggregate suitable for use in concrete.