Sika Ag, Vorm. Kaspar Winkler & Co.

Christian Strandgaard

A settable mixture comprising magnesium oxide, magnesium chloride, water, resiliently compressible fibers, and a filler material produces a cement with high strength and excellent sound attenuation properties, avoiding the expansion properties observed in comparable prior art mixtures. The mixture may be used in a method of manufacturing a sound insulating floor construction on top of a floor base (,) and within confinement walls (,), the method comprising applying on top of the floor base a layer of soft, resilient mats (,), arranging along the confinement walls a spacer list (,) comprising a sort, resilient material, pouring on top of the mats the mixture, leveling the top surface of the mixture, and allowing it to set to form a solid slab (,).

Settable mixture and a method of manufacturing a sound insulating floor construction

A sound insulating structure (,) comprises first layer plates (,) arranged in coplanar and contiguous relationship in order to form a first structural layer, second layer plates (,) arranged in coplanar relationship in order to form a second structural layer in spaced parallel relation with the first structural layer, and a core (,), which core effectively bridges the space between and adheres together plates of the respective layers, and which core comprises an elastic, vibration deadening mass. At least one through opening is provided in each of the second layer plates with the purposes of permitting escape of any trapped air and of permitting inspection of the space between the structural layers while the mass in the core sets to an elastic state. The invention also provides a panel and a method of manufacturing a sandwich board.

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Værløse, Denmark

Christian Strandgaard