The Low Temperature Performance Test Analyzes Of Asphalt Mixture

In cold area, asphalt road surface low temperature crack happen occasionally, It is a kind of main road surface disease,it will influence the service level of the road surface of asphalt seriously.Influence main factor of low-temperature crack are asphalt and asphalt mixture's own performance. This essay is on the basis of studying both at home and abroad, basalt as the stone, two kinds of asphalt of taipingyang90# and hanguo90# are adopted,go on modified pitch that modify two asphalt with SBS modified pharmaceutical bonifibers as raw materials, Ten types of AC-16K and AC-161 dense-graded aggregate asphalt mixtures are made ,which are the general asphalt mixture, SBS modified asphalt mixture, the general asphalt mixture reinforced by Bonifibers and SBS modified asphalt mixture reinforced by Bonifebers. The stability under high temperature, the anti-crack ability under low temperature and the water resistance are tested for the ten types of asphalt mixtures in lab. Marshall stability of asphalt mixture, the Marshall stability of impregnated asphalt mixture, the dynamic stability in rut test of asphalt mixture, the tensile strength in cleavage of the mixture are researched by comparatively testing. This text proposed the low temperature performance index of the same mixture ratio different asphalt variety and the same asphalt variety different mixture ratio. The thesis combines the investigation of the highway circling the Harbin, analyzed the cause destroyed at low temperature, for Heilongjiang Province bitumen road surface design, operation and study offer technical support.