资源节约型农村公路结构的环境效益分析

Environmental Benefit Analysis of Resource-saving Rural Road Structure

为分析资源节约型农村公路结构的环境效益,采用生命周期评价(life cycle assessment,LCA)方法对比研究了其与常规路面结构间能耗及碳排放的差别。结果表明:路面施工的主要耗能及碳排放环节为原材料(包括集料、沥青、水泥等)与沥青混合料的生产环节;资源节约型路面结构通过减少原材料的使用,可有效降低路面施工的能耗及碳排放,降低程度约在16%~22%。为进一步降低路面施工的能耗及碳排放,可从沥青混合料生产环节展开相关研究。

In order to analyze the environmental benefits of the resource-saving rural road structure,the life cycle assessment(LCA)method was used to compare and research the difference of energy consumption and carbon emission between it and conventional pavement structure.The results show that:the main energy consumption and carbon emission generation aspects of road construction is the production of raw materials(including aggregates,asphalt,cement,etc.)and asphalt mixture;the resource-saving pavement structure can effectively reduce the energy consumption and carbon emissions of pavement construction by 16%to 22%,through reducing the use of raw materials.In order to further reduce the energy consumption and carbon emissions of pavement construction,relevant research about the production of asphalt mixture can be carried out.