Abstract: Method and apparatus for producing mixtures containing bitumen, in which the material to be treated is conveyed by the force of gravity through a slit-type space between two vertically arranged heated surfaces.
Abstract: Method for the layered placing of upright or sloping dam cores of material bound with bitumen and/or plastic and/or a natural binder in a constant or upward-tapering thickness for dams such as barrage dams characterized in that the core material is placed from a silo of a travelling machine; that at the same time transitional material is placed, from one or more silos of that machine, alongside and against the placed core material; that the dam core is formed with the aid of a sliding formwork located on the machine to give lateral support to the core until and while the transitional material is placed; that the core material, immediately after it has been placed and before the transitional material is placed, is pre-compacted both vertically and laterally; and that subsequently the core material and the transitional material are (further) compacted.
Type:
Grant
Filed:
March 19, 1982
Date of Patent:
April 2, 1985
Assignee:
Bitumarin B.V.
Inventors:
Gerardus L. M. Mulders, Jacobus G. J. M. Hermans