It is environmental friendly up-grading product of rubber asphalt. It is with performance advantages of rubber asphalt as well as the low-carbon environment-protection function of releasing anion to air to absorb automobile exhaust.

On-site detection by Yanshan University National University Science Park Polymer Innovation Research Institute and China Miniature Polymer Chemical Experiment Research Center and the following data was gained.

Density of ordinary asphalt pavement:

Test Point 1: maximum 150 / cm3, minimum 70/ cm3, average 110/ cm3Test Point 2: maximum 180 / cm3, minimum 60/ cm3, average 120/ cm3

Density of natural anion composite modified asphalt

Under sunlight: maximum 3910/ cm3, minimum 2700/ cm3, average 2860/ cm3Out of sunlight: maximum 7300/ cm3, minimum 5500/ cm3, average 6300/ cm3

Conclusion: Under equal testing condition, anion releasing quantity of natural anion composite modified asphalt pavement is obvious higher than that of ordinary pavement asphalt, which can improve environmental condition.