Quantitative analysis of energy consumption and emission of plant-mixed hot recycling technology
1.Key Laboratory of Special Area Highway Engineering of Ministry of Education, Chang′an University, Xi′an， Shaanxi 710064, China; 2.Hubei Provincial Communications Planning and Design Institute, Wuhan, Hubei 430051, China
Abstract： In view of the processing of old pavement, the producing of raw materials, the manufacturing of recycling mixture and the constructing of recycling pavement, the quantitative analysis methods and steps for energy consumption and emission of asphalt pavement hot recycling technology were analyzed based on data collection and calculation. The quantitative analysis model for energy consumption and emission of asphalt pavement hot recycling technology was established. The various steps and the total energy consumption and emission of asphalt pavement hot recycling technology were investigated in detail. The total energy consumption and emission of unit mass hot recycling mixture, the energy consumption ratio and environmental emission coefficient at different life cycle stages were calculated. The results show that compared with hot asphalt mixture, the total energy consumption of 1 t hot recycling mixture at four stages is declined by 19%, and paving 1 km asphalt middle course by hot recycling mixture can reduce the emissions of 2 645 kg CO2, 43 kg SO2, 87 kg 1, 4-dichlorobenzene and 143 kg granular matter equivalently.
2015, Vol. 36 
