Development of Eco-friendly PC Sleeper in Korea

초록

In this study, typical industrial by-products (steel slag) were used as an ingredient of the concrete sleeper. In other words, high-early-strength Portland cement was partially (30%) replaced by ground granulated blast furnace slag, and electric arc furnace oxidizing slag was used as an alternative to fine aggregates. Finally, a prototype was made to evaluate the required performance by the railway standards. Eco-friendly PC sleeper using steel slag has following key features. First, recycling industrial by-products as an high valued-added ingredient of PC sleeper. Second, recycling industrial by-products to upgrade the performance of PC sleeper. Third, recycling industrial by-products to reduce the manufacturing costs of PC sleeper Fourth, weight gain of 10% of the PC sleeper leads to the improved track stability. Fifth, reduction of CO2 emission was achieved. The amount is 10kg per sleeper.