Method of manufacturing a hollow self-supporting concrete...

Details Method of manufacturing a hollow self-supporting concrete... Method of manufacturing a hollow self-supporting concrete...

E - Fixed Constructions

04

B

E04B 1/35 (2006.01) E01F 8/00 (2006.01) E04G 11/04 (2006.01) E04G 11/06 (2006.01) E21D 11/00 (2006.01)

Patent

CA 2091938

The invention relates to a method and means for manufacturing freely supported dome or tunnel-shaped structures by means of spraying a particular mortar with micro silica onto an inflated bladder (2) or sheet with or without a primarily applied layer (15) of foam and with or without reinforcing means (23, 24, 28) in particular for manufacturing a tunnel-shaped span (21) for a highway or railway portion.

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