Eco-friendly Prestressed Concrete Sleeper

초록

The 2nd industrial revolution started in late 19th century could be called as the era of greenhouse gas emission or a gray revolution which has caused the global warming. But, nowadays, many countries have participated in green revolution to reduce CO2 emission. We should prepare the post-carbon era since we have already faced with serious environmental problems. With this background, I have started to pay attention to the eco-friendly research items.