Properties of Pervious Concrete with Recycled Oyster Shells as Partial Aggregates Component

Abstract

This study aims to investigate the performance of oyster shells as partial aggregates replacement in a pervious concrete mixture. The experiment was carried out by replacing coarse gravel aggregates in standard concrete formulations with 10%, 20%, 30%, and 40% manually-crushed pre-treated oyster shells. For periods of 7, 14, 28, and 52 days, primary concrete properties such as pH, carbonation depth, sorptivity, compressive strength, and permeability were investigated. According to the investigations, all modified specimens outperformed control specimens, and the performance of pervious concrete was directly related to the number of replacements. Calcium carbonate was added to the mixture, which improved physical performance. However, after 28 days, the quickly achieved initial compression strengths were reduced. This research has revealed that oyster shells have much potential as an alternative material in the construction business. Furthermore, the development of pervious concrete could be an alternate environmental option for solid waste management and urban stormwater management.