Impact of Crushed Peruvian Scallop as filler on the Properties of Pervious Concrete Mixtures

Granda D.C.; Petrozzi G.R.; Garcia C.V. · International Conference on Construction in the 21st Century (2024)

Resumen

The use of pervious concrete with crushed Peruvian scallop seashell waste (CSS) emerges as a sustainable solution to two significant issues in Piura. It enhances waste management in the aquaculture sector in Sechura by reducing waste accumulation and helps mitigate flooding caused by events such as "El Niño". This research evaluates the behaviour of pervious concrete incorporating CSS as a filler with a particle size smaller than 75 µm. The experimental programme comprised two phases. In the first phase, the fresh state characteristics of the cement matrix with CSS filler were analysed. A standard paste was utilised, and various formulations were designed by adjusting CSS percentages (5%-15%) and plasticising admixture (0%-1.4%), while maintaining consistent matrix volume and water-cement ratio. In the second phase, matrix compositions with similar coating thicknesses to the standard paste were selected to produce pervious concrete, according to ACI 522-2023 guidelines, with a water-cement ratio of 0.35 and high compaction energy. Results indicate that incorporating CSS filler increased the compressive strength of pervious concrete by up to 24% at 28 days for a 10% CSS content, while maintaining permeability rates above 20 mm/s.

Instituciones: Universidad de Piura