Steel monoblock sleeper and method for producing same

A method for manufacturing a steel monoblock sleeper comprising the following steps:

• (a) providing or manufacturing a steel sleeper trough body from a hollow profile
• (b) arranging or forming at least one moulded body (400) in at least one section of the steel sleeper trough body, and connecting it to the steel sleeper trough body so that the at least one section of the steel sleeper trough body is filled by the at least one moulded body in a profile-filling manner,
• wherein
• the following further process steps are provided:
• Filling a hollow profile mould, the hollow shape of which corresponds at least to a section of the hollow profile of the steel sleeper trough body, with reactive material, and allowing the reactive material to react to form the at least one moulded body filling the hollow profile mould in a profile filling manner
• wherein
• before filling or simultaneously with filling the reactive material into the hollow profile shape, the hollow profile shape is additionally filled with loose solids, and the loose solids are compacted, and the filling and reaction of the reactive material is carried out in such a way that the reacted reactive material surrounds the loose solids and forms the moulded body as a composite body whose outer contour is adapted at least to a section of the contour of the hollow profile mould.