PROCEDIMENTO PER IL MIGLIORAMENTO DEI RIVESTIMENTI ASFALTATI MINERALI DI STRADE E VIE

摘要

There is provided a process for improving mineral asphaltic coatings for streets and roadways comprising preparing a mixture to be used as the base mineral asphalt coating material, homogeneously mixing in 0.1 to 10 weight % of silica which is either (1) a precipitated silica, (2) a precipitated and spray dried silica or (3) a pyrogenically produced silica and further working this mixture into a mineral asphalt coating for streets and roadways.