The Asphalt Mixture Gradation Control Principle

The use of qualified aggregate and gradation control theory can make the design of a mixed aggregate gradation value consistent with the requirements,it can significantly reduce the surface segregation,reduce maintenance costs,extend the pavement life.This article expounds asphalt mixture gradation control principle;and the principle of gradation control testing;aggregate mixture specification selection rules;analysis of a mixture of asphalt aggregate that should be composed of several specification.