Research On R24G Half Warm Asphalt And It’s Mixture

With the advance of the national energy-saving emission reduction work, how to maintain the excellent characteristics of hot mix asphalt mixture performance and overcome its serious environmental pollution, energy consumption, asphalt has aging, or how to ensure the cold mix asphalt mixture energy saving, environmental protection advantages and overcome its performance still had the disparity is the direction of our efforts. Semi warm mix asphalt emulsion is a kind of mixing temperature between cold mix asphalt and hot mix asphalt between, in the form of emulsified asphalt, performance closer to hot mix asphalt is a new type of energy-saving emission reduction emulsified asphalt.The in view of the present existing semi warm mix technology of emulsified do in-depth research and analysis, choose R24 G semi warm mix asphalt emulsion preparation of semi warm mix asphalt emulsifier, through to affect the storage stability of each factor analysis to determine each factor of the optimum value and accordingly draws the semi warm mix asphalt emulsion formulation and conventional emulsified asphalt comparative analysis and comprehensive evaluation of its storage stability; Using the modified water boiling method and Vialat experimental study on different types of asphalt and different rock mineral aggregate adhesion; influence of emulsifying process of conventional indicators of asphalt on the evaporation residue three indicators were studied and compared with other types of asphalt of the three major indexes.Mixture of semi warm asphalt mixture strength formation mechanism and mixing method, through the different molding methods forming test of porosity in contrast to the gyratory compaction can better determine temperature semi emulsified asphalt mixture and the temperature range, and based on the semi warm mix asphalt emulsion mixture road performance of comprehensive evaluation is obtained.Research shows that: R24 G semi warm mix asphalt emulsifying agent has the advantages of simple process, good emulsifying effect; prepared semi warm mix asphalt emulsion storage stability is excellent, standing for 30 days and no obvious oil-water separation; and mineral material adhesion is good.Mixture obvious cooling effect, to achieve the purpose of environmental temperature, at the same time the mixture is relatively improved high-temperature performance, in the temperature decreased 35 ℃, the mixed material of water stability and low temperature performance meet the specification requirements, road performance is good.