（College of Materials Science & Engineering, Beijing University of Technology, Beijing, 100124, China）
Keywords:
-
CLC:
PACS:
-
DOI:
10.7502/j.issn.1674-3962.2016.10.03
DocumentCode:
Abstract:
The Eco-design of road building material is that the environmental load, performance and economic cost of the material will be considered into the material design process, with the idea of life cycle assessment as a guide, through the ecological reconstruction can make the materials in harmony with the environment. This study conducted an Eco-design of steel slag asphalt concrete road surface through the steps include the determination of product design objectives, needs analysis, design implement and evaluation with the natural stone asphalt concrete as a reference. The results show that the life cycle environment load of the steel slag asphalt concrete is about 14.17% lower than natural stone asphalt concrete and 31.87% higher than its using performance, the economic cost of 1 km road construction is 8.37% lower than the steel slag asphalt concrete required, the Eco-design comprehensive evaluation result is greater than natural stone asphalt concrete, so the steel slag asphalt concrete are better than natural stone asphalt concrete in the environmental load, using performance, economic cost and overall performance，we can get a conclusion that the steel slag asphalt concrete pavement is more in line with the Eco-design the requirements than natural stone asphalt concrete pavement, which provide the basis for the green design and selection of road building materials.