Study on Pavement Performance of Foamed Asphalt Mixture in Mid-Surface of Expressway

摘要

Pavement performance of Foamed Asphalt Mixture in Mid-Surface of Expressway is studied in the paper. The production process of foamed asphalt mixture in the construction site mixing station is briefly introduced. Experimental study on water stability of asphalt mixture by immersion Marshall test and freeze-thaw splitting test to improving the water stability of foamed asphalt mixture Introduction. Through the freeze-thaw cycle test, the durability of foamed asphalt mixture under the condition of multiple freeze-thaw cycles was studied. Combined with the actual engineering plant production of foam asphalt mixture and paving test section, the core of the test section of the sampling method to determine the compaction degree of two kinds of mixture pavement. The results show that there is little difference between the foam asphalt mixture and the hot mix asphalt mixture, and both of them can meet the technical requirements.