친환경 PC침목의 성능평가

초록

The important social impacts of reducing carbon dioxide (CO₂) emission are widely recognized. At this point, railway is recognized as one of the typical eco-friendly transportations, and various sponsored activities for the development of green vehicles have been recently doing throughout the several years. However, sponsored development activities and research on the eco-friendly infrastructure are still limited. In this study, eco-friendly PC sleeper was developed in which the usage of the cement and natural resources was reduced, and typical industrial byproducts (steel slag) was recycled as ingredients of the concrete. Mixing design was done for manufacturing the eco-friendly PC sleeper, in which high-early-strength portland cement was partially replaced by Ground Granulated Blast Furnace Slag, and Electric Arc Furnace oxidation slag was used as an alternative to fine aggregate. As a result of this study, it is found that the prototype of eco-friendly PC sleeper meets the required performances by the Korean railway standards (KRS) and European standard (EN), and it is hoped that the eco-friendly PC sleeper can contribute the reduction of carbon dioxide (CO₂) emission in railway concrete infrastructure.