Method and composition for polymer-reinforced composite...

C - Chemistry – Metallurgy – 08 – J

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C08J 9/28 (2006.01) C04B 24/16 (2006.01) C04B 24/26 (2006.01) C04B 28/14 (2006.01) E04C 2/04 (2006.01)

Patent

CA 2478257

A method and composition for organic-inorganic composite cementitious construction materials is described. The microstructure of the composite includes porosity. In one embodiment, a crosslinking component is mixed with a high molecular weight strengthening component and an inorganic cementitious material. The addition of the mixture to water causes a crosslinked molecular network to form within the hydrated, composite cementitious construction material. Porosity forms during drying and setting or as a result of the introduction of a stabilized foam or foaming agent. Both enhanced flexural strength and improved nail-pull resistance are shown, allowing a reduction in weight of the composite cementitious construction material compared to cementitious construction materials made according to other known methods.

L'invention concerne un procédé et une composition pour matériaux de construction composites organiques-inorganiques à base de ciment. La microstructure du composite est poreuse. Dans un mode de réalisation, un composant de réticulation est mélangé à un composant de renforcement de poids moléculaire élevé et à un matériau inorganique à base de ciment. L'ajout du mélange à de l'eau permet de former un réseau moléculaire réticulé dans le matériau de construction composite hydraté à base de ciment. La porosité apparaît au cours du séchage et de la prise ou comme résultat de l'introduction d'une mousse stabilisée ou d'un agent de moussage. On obtient une résistance à la flexion et une résistance à l'arrachage améliorées, permettant une réduction du poids du matériau de construction composite à base de ciment, comparé aux matériaux de construction à base de ciment obtenus au moyen d'autres procédés connus.

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