Design Method of Asphalt Treated Base Asphalt Content Based on Cohesive Strength

Abstract

Combining with compression strength and tensile strength, the cohesive strength method is applied to determine the asphalt content (by weight of aggregate) of asphalt treated base (ATB) for the purpose meeting ATB tensile performance. The results are compared with those of Marshall Method. Two calculation methods of asphalt film thickness are applied to calculate the thickness of asphalt film. The calculation results show that cohesive strength method force the admixture to attain the better thickness of asphalt film, and the spectrum of film thickness is between about 6.5μm ~9.0μm.