Development of a new asphalt airstrip additive

摘要

In this technical note, a new asphalt airstrip additive was prepared by allowing ethyenediamine to react with formaldehyde, heptaldehyde and phenol. The study showed the additive could greatly improve the adhesion between bitumen and acidic rocks, and cause the adhesion grades of bitumen to acidic aggregate materials to be increased from 1-2 to 4-5 and the index of Marshall retained stability to each greater than 80 per cent.