Method and composition for reinforcing asphalt cement concrete

摘要

Reinforcing fibers, such as aromatic polyamide (“aramid”) fibers, are treated by coating with or embedding in a binder such as a Fischer-Tropsch wax. The treated fibers are divided into suitably-sized units, which are added to bitumen, aggregate and other ingredients in an asphalt cement concrete mix. The units shed fibers into the mix during the manufacturing process so that the fibers are distributed fairly evenly throughout the asphalt mixture. The binder may also impart beneficial qualities to the finished asphalt concrete.

主权项

1. A method of producing reinforced asphalt pavement, comprising:
treating a plurality of roughly parallel reinforcing fibers with a binding agent to produce a treated reinforcing fiber bundle; severing the treated reinforcing fiber bundle to produce a plurality of treated reinforcing fiber bundle segments, the fibers of each segment being roughly parallel with each other and a length of each treated reinforcing fiber bundle segment between about 8 mm and about 100 mm; introducing the treated reinforcing fiber bundle segments into an asphalt cement concrete mixture; depositing the asphalt cement concrete mixture onto a surface; and compacting the asphalt cement concrete mixture to form a reinforced asphalt pavement.