| 摘要 |
<p>In a hot-mixing unit, bitumen is homogenised together with polyethylene and/or polypropylene to give a homogeneous binder for as long as necessary for the initial viscosity of the binder to drop significantly. Only the drop in viscosity beyond the usual drop in viscosity with increasing temperature is taken into account here. If the process is continued for a sufficient time, the viscosity of the binder composition is lowered so much that a road surfacing material produced using a binder composition of this type can be installed in a conventional manner intended for the processing of bituminous road surfacing materials. This allows the use of conventional methods and machines for installing the road surfacing material.</p> |
