Method and apparatus for manufacturing a coating mass for road constructions

Abstract

A method and apparatus for manufacturing a coating mass for road constructions are disclosed wherein stone minerals of different grain size ranges are dosed, dried, heated, dusted off and supplemented with a binding agent and other flux materials. The stone minerals of the various grain size ranges are separated from each other and are predosed, dried and heated. This divides the stone minerals of each grain size range into a stone fraction and a respectively absorbed fine grain size material which is divided into a sand fraction and a self filler fraction by means of filtering, the sand fraction is thereafter added again to the stone fraction of the respective grain size range, and the self filler fractions of all grain size ranges are combined weighted. All of the heated stone and sand fractions are also weighted and combined and are mixed together with the combined and weighted self filler fraction, and the binding agent in order to provide the coating mass.

Dependencies are inferred from the claim text.