Evaluation of the compressive strength of paver blocks with the inclusion of Mangima stone and Eggshell powder

Abstract

The demands in building infrastructures in many countries require a huge amount of concrete to be used. As such, the construction industry increased its requirement for aggregates and cement. However, quarrying and dredging of aggregates in the river harm the environment. Also, cement production contributes to carbon dioxide emissions. The primary focus of this study is to evaluate the application of Mangima stone (phyllite schist) and eggshell powder (ESP) as fine aggregate and cement additives to the concrete paver, respectively. Laboratory tests such as sieve analysis, absorption, specific gravity, x-ray fluorescence spectroscopy, and compression were performed. The conventional aggregate was replaced with 100% Mangima stones and added with 5%, 10%, and 15% ESP. The samples were subjected to 28 days curing period. Results showed that the samples with 100% Mangima stone and 15% addition of ESP obtained the highest density (2330 kg/m3) and compressive strength (17.09 MPa) but had lowest absorption capacity (0.90%). In general, as the percentage addition of ESP increases, the compressive strength of paver blocks increases. Therefore, incorporating Mangima stone and ESP is a significantly good material in making innovative concrete paver block material.