Performance Evaluation of Permeable Block using Hydroball

Abstract

Carbon dioxide and fine dust have recently been a concern not just in Korea, but also around the world. As a result, a way to eliminate dangerous elements in the air, such as carbon dioxide and fine dust, is necessary. The goal of this study is to evaluate the performance of the permeable block by analyzing the flexural strength, compressive strength, permeability coefficient, carbon dioxide, and fine dust adsorption rate of the permeable block produced according to the hydroball replacement rate. The flexural strength and permeability coefficient of the permeable block are evaluated based on ‘KS F 4419’, the standard for permeable blocks, and the performance evaluation of adsorption of harmful substances such as carbon dioxide and fine dust is based on the small chamber method proposed by Hanbat University. The following are the findings of this study: As the hydroball replacement rate increased, the flexural and compressive strengths decreased over time. Due to the porous properties of the hydroball, this is thought to have reduced the strength as a consequence of insufficient moisture necessary for hydration. In the case of flexural strength, it is judged that the hydroball replacement rate is appropriate up to 20% based on ‘KS F 4419’, which is the water-permeable block standard. In the case of carbon dioxide and fine dust concentrations, the concentration decreased as the hydroball replacement rate increased. When the hydroball replacement rate is 30%, carbon dioxide is adsorbed 79%, and fine dust was adsorbed 82%. The concentration of carbon dioxide and fine dust was lowered as a result of physical adsorption generated by generating voids inside the cured body and the influence of hydroball photocatalysts. Based on the results of this study, replacing the permeable block using hydroball with the existing permeable block is expected to contribute to health improvement as a solution to air pollutants, and it can be used as basic data to secure engineering properties and adsorption of harmful substances.