The Stress Absorption Mixture Of Asphalt Pavement Performance

The material of stress absorb layers has the superiority in delaying or restraining the reflection cracks of the old concrete road surface, and this is different from general intermediate layer of prevent fracturing .So it becomes one kind of important technological schemes which is adopted in adding asphalt on the concrete road surface of old cement.This text has analyzed the pavement performance of asphalt mixture with stress absorb layers, such as rheology characteristic , splitting in low temperature, creeping, drawing, fatigue under drawing and pressing and water damage. In ore material grades, through some researches this text puts forward a reasonable ore material applying to project and proposes two grades by adjusting it up and down and then carry on comprehensive research to its pavement performance. In asphalt combiner aspect, with the technological index of stress absorb layer in asphalt combiner for reference, the author chooses host pitch and various modifiers to compound and modify, to evaluate the influence of modifier on asphalt basic index, to analyze the influence of every factor to the pavement performance of asphalt mixture with stress absorb layers. Finally, the author puts forward the direction of modifying to asphalt combiner with stress absorbs layers in further study.