Shear Performance Of Asphalt Mixture Experimental Research

At present, the mountain highway asphalt surface which China has built, particularly long steep sections of varying degrees, have occurred because of the shear slip road, track and other diseases, overloading, function overloading of vehicles which leads to speed up the emergence of these diseases.Therefore, in response to high temperature rutting of asphalt pavement caused by the adverse effects of reduced shear failure and improve the quality of asphalt pavement, to carry out in-depth asphalt pavement surface layer of strong shear asphalt mixture becomes very necessary.This article from the asphalt pavement rutting analysis of the causes and how to improve the capacity of the road surface rutting resistance were discussed. Then from the aggregates, asphalt, grading and other tests to study the performance of Mixture. In terms of cementing material selected 70 # conventional asphalt, SBS modified asphalt and modifier 70 # + BP2000 three different binder for research; in terms of selection specification gradation value AC-13C, AC-13F and obtained under the discrete theory theory-based framework of granular dense gradation MAS-13. Marshall determined according to nine different optimum asphalt asphalt mixture ratio, the road performance of their comparison, analysis and comparison of strengths and weaknesses of various mixtures. MAS-13 in the high temperature stability, water damage, etc. are better, superior to the same conditions AC-13C, AC-13F.Finally, using SST shear testing apparatus test nine different mixture of high temperature stability, and further confirmed by MAS-13 advantage in the high-temperature stability.