Abstract
It has become significant to illustrate the environmental load emissions and the costs by waste recycling system, and to improve the actual recycling processes in various industries. Objective of this study is to evaluate the carbon dioxide emission and costs in the construction processes of new and recycled pavement. Three kinds of materials (asphalt, cement, and aggregate) are put into road building. We reached the recycling effects in the carbon dioxide emission and construction costs by applying these materials to some model cases of the traffic volume. The following results were obtained in this study.(1) Recycling of pavement waste asphalt is effective for reducing 56% of carbon dioxide emission.(2) Recycling of pavement waste aggregate increases carbon dioxide emission but it is greatly effective for saving resources consumption.(3) While the recycled asphalt pavement is expected to have some advantages in reducing carbon dioxide emission and construction costs, it was founded the recycled concrete pavement to increase carbon dioxide emission and construction costs.
