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Dichtungsmaterial und Verfahren zur Abdichtung von Hohlraeumen in Baustoffen und/oder Bauteilen

Material for sealing voids in building materials and/or building parts, comprises a water-swellable durable-elastic polymer and/or durable-elastic mineral substance present in a pre-swollen gel state before introducing into the voids
 
: Wack, H.; Hintemann, D.; Hegemann, R.

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Frontpage ()

DE 102008032184 A: 20080709
DE 102008032184 A: 20080709
C04B0026
E04B0001
E04G0023
Deutsch
Patent, Elektronische Publikation
Fraunhofer UMSICHT Oberhausen ()

Abstract
(A1) Dargestellt und beschrieben ist ein Dichtungsmaterial (5) ausgebildet zur Abdichtung von Hohlraeumen in Baustoffen und/oder Bauteilen, insbesondere Gebaeudeteilen (1). Erfindungsgemaess weist das Dichtungsmaterial (5) wenigstens ein wasserquellfaehiges dauerelastisches Polymer und/oder wenigstens eine wasserquellfaehige dauerelastische mineralische Substanz auf, wobei das Polymer und/oder die mineralische Substanz vor dem Einbringen in den Hohlraum in einem vorgequollenen Gelzustand vorliegt.

 

DE 102008032184 A1 UPAB: 20100202 NOVELTY - The sealing material (5) comprises a water-swellable durable-elastic polymer and/or a water-swellable durable-elastic mineral substance, which are present in a pre-swollen gel state before introducing into the voids. The pre-swelling degree of the polymer and/or mineral substance before introducing into the voids is 10:1-14:1 related to the non-swollen state. The remaining swelling degree of the polymer and/or mineral substance is 15:1-30:1 related to pre-swollen state. The particles (25 wt.%) of the polymer and/or mineral substance in a dry non-swollen state have a grain size of 50-350 mu m. DETAILED DESCRIPTION - The sealing material (5) comprises a water-swellable durable-elastic polymer and/or a water-swellable durable-elastic mineral substance, which are present in a pre-swollen gel state before introducing into the voids. The pre-swelling degree of the polymer and/or mineral substance before introducing into the voids is 10:1-14:1 related to the non-swollen state. The remaining swelling degree of the polymer and/or mineral substance is 15:1-30:1 related to pre-swollen state. The particles (25 wt.%) of the polymer and/or mineral substance in a dry non-swollen state have a grain size of 50-350 mu m. The maximum grain size of the polymer and/or mineral substance in the dry non-swollen state is less than 500 mu m. The swelling pressure of the polymer and/or mineral substance is 10-70 bar during swelling in water in a closed void. The sealing material has a natural polymer and a synthetic polymer. An INDEPENDENT CLAIM is included for a method for sealing voids in building materials and/or building parts. USE - Sealing material useful in a cartridge, for sealing voids in building materials and/or building parts (claimed), and for horizontal and/or vertical sealing of masonry walls. ADVANTAGE - The sealing material economically provides simple, reliable, safe and complete sealing against the outside water in a maintenance-free manner, effectively prevents moisture coming from the outside through cracks, can be economically and efficiently produced with high durability, high degree of flexibility and improved vapor diffusion resistance, and completely suppresses the water transport process through the capillary and/ or pore system of the building materials and/or building parts.

: http://publica.fraunhofer.de/dokumente/N-118883.html