Influence of nanosilica and polypropylene fibers on the permeability, compressive and flexural strength of pervious concrete

Valderrama R.; Santos D.; Eyzaguirre C. · E3S Web of Conferences (2024) · DOI: 10.1051/e3sconf/202458604001

Resumen

The article examines the importance of pervious concrete in construction, emphasizing the need to balance the required permeability with necessary strength. The incorporation of nanosilica and polypropylene fibers into pervious concrete was evaluated, considering compressive and flexural strength, void percentage, and permeability. The methodology included an experimental mix design and specific tests. The results showed significant improvements in the properties of pervious concrete. For instance, compressive strength increased from 128.01 kg/cm2 in the standard concrete to 216.08 kg/cm2 with the addition of 0.12% polypropylene and 1% nanosilica. Similarly, flexural strength exhibited substantial increases, from 18.76 kg/cm2 in the standard to 34.11 kg/cm2 and 43.42 kg/cm2 with the respective dosages. Regarding permeability, the coefficient decreased from 2.60 cm/s in the standard concrete to 2.50 cm/s with the addition of 0.12% polypropylene and 1% nanosilica. In summary, the research supports the effectiveness of these additives in enhancing the performance of pervious concrete, with improvements of up to 68.8% in compressive strength and 131.4% in flexural strength. © The Authors, published by EDP Sciences, 2024.

Instituciones: Universidad Peruana de Ciencias Aplicadas