Abstract
At present, the international community emphasizes reducing carbon emissions, and the national level includes carbon peaking and carbon neutralization as development goals. As a landmark material for energy conservation and emission reduction in road engineering, the research on carbon emission accounting needs to be further refined. Based on the introduction of the basic concept, development process and current situation of carbon emission accounting of warm mix asphalt mixture, this paper focuses on the most novel and recognized energy consumption accounting method and carbon emission calculation method at home and abroad. The research results of carbon emission accounting in the production, transportation and construction of warm mix asphalt mixture are introduced in detail. Finally, the research on carbon emission accounting of this material is evaluated at the present stage and prospected in the future.
Highlights
The base material often used in road engineering construction in China is hot mix asphalt mixture, but it produces a lot of carbon dioxide in the process of mixing and construction, resulting in environmental damage
Warm mix asphalt mixture is a method that uses some technical means to greatly reduce the mixing temperature of asphalt mixture and hardly change the performance of asphalt mixture, which is called asphalt warm mix technology Secondly, carbon emission refers to greenhouse gas emissions, such as CO2, CO and PM, which are all called greenhouse gases
The carbon emission accounting of warm mix asphalt mixture is a kind of research on the specific accounting of carbon emission from the three links of mixture production, transportation and construction
Summary
The base material often used in road engineering construction in China is hot mix asphalt mixture, but it produces a lot of carbon dioxide in the process of mixing and construction, resulting in environmental damage. The appearance of warm mix asphalt mixture greatly reduces the temperature during mixing and construction and reduces the emission of carbon dioxide. Warm mix asphalt technology mainly adopts the way of adding materials to reduce the temperature, generally including organic viscosity reducer method and surfactant method. It can reduce the mixing and compaction temperature to achieve the goal of energy conservation and emission reduction. From the perspective of energy conservation and emission reduction, this paper expounds the basic concept, development history and current situation of carbon emission accounting of warm mix asphalt mixture, analyzes and studies the best carbon emission accounting method at present, and studies the carbon emission accounting of warm mix asphalt mixture from the three aspects of production, transportation and construction
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