Experimental Research on High Viscosity Emulsion Asphalt Sand Seal

Abstract

The mix design of high viscosity emulsion asphalt sand seal is carried out according to the test of 6 kinds of emulsified asphalt specimen with different solid content and Enge La viscosity (Ev). The road performance obtained according to the stone off rate test, skidding resistance performance test and shear performance test. The change law of road performance with different solid content and Ev is obtained. The BPN of the specimen increases as the spray amount increases when Ev =7, and first increases then decreases as the spray amount increases when Ev =10, Ev =14 or Ev =18. The shear strength value between layers of emulsion asphalt sand seal increases as the solid content increases and reaches the maximum 2.14MPa when solid content is 70%.