The Research Of Asphalt Warm Mixing Process And Equipment Technology

Environmental pollution and energy depletion have become hot issues of global widespread concern.In order to protect human ecological environment,countries all over the world are advocating ‘‘low carbon" technology.Warm-mix asphalt mixture pavement technology is a new technology which is being gradually popularized and applied in the world in recent years.Compared with the same type of hot-mix asphalt mixture pavement technology,this technology reduces the mixing temperature of mix asphalt by more than30℃-40℃ without changing the construction technology and the material proportion of asphalt mixture,and the performance of it meets the requirements of hot-mix asphalt mixture.Warm mix asphalt mixture has become a promising new pavement material in the field of asphalt pavement materials due to its advantages of low production energy consumption,low emission of exhaust gas and dust.This subject carries out the research on the technical principle of warm-mix asphalt foaming equipment and warm-mix asphalt technology.According to the characteristics of hot-mix cold-mix asphalt mixture,this subject introduces the optimum foaming conditions of foamed asphalt and the factors influencing the effect of asphalt foaming,analyzes the application status,compaction characteristics,mature curing law and foaming mechanism of the warm mix asphalt mixture,reveals the stability of the foam asphalt warm mix mixture from the microscopic level,and puts forward a construction technology of the foam asphalt warm mix mixture and the actual production.Foam asphalt warm mix technology,designed a special asphalt warm mixing foaming device,and foamed asphalt temperature mixing device foaming test,verified and summarized the asphalt foaming effect and energy saving and environmental protection benefits.The experimental research and analysis shows that the foam asphalt warm mix technology can effectively reduce the operation temperature of asphalt mixture production and construction,reduce environmental pollution,improve the working environment,reduce the aging of asphalt mixture in the production process,improve the road use of mixing materials and prolong the service life of asphalt pavement.The performance of asphalt mixture blended with foam asphalt warm mix technology is better than that of conventional hot mix and cold mix asphalt mixture.It is a green and environmentally friendly asphalt pavement laying technology,and is a truly high energy saving and low emission technology.Through the use of the device shows that: Compared with conventional asphalt,the physical properties of foamed asphalt change temporarily,and the viscosity of asphalt is significantly reduced.By improving the construction quality and fluidity of asphalt mixture and reducing the mixing temperature of asphalt mixture,the foamed asphalt mixture can be mixed,paving and rolling at relatively low temperatures,so as to realize the warm mix production of asphalt mixture,asphalt warm mix foaming device structure is simple and practical,easy to make,simple control,accurate calculation,compatibility,the use of asphalt temperature mixing device to reduce the degree of environmental pollution and production costs,to the construction has brought convenience,while effectively solving the asphalt pavement paving process of energy waste,construction efficiency is low.