C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 40/00 (2006.01) C04B 28/02 (2006.01)
Patent
CA 2611895
A method of delivering an admixture providing freeze-thaw resistance to a cementitious composition is provided which includes the addition of a viscosity modifying admixture containing at least one of polymeric microspheres, at least partially degradable polymeric particles, or gas generating additives to cementitious compositions. The polymeric microspheres, at least partially degradable polymeric particles, and gas generating additives provide void spaces in the material matrix, and such void spaces act to increase freeze-thaw durability of the material.
L'invention concerne un procédé destiné à incorporer un mélange conférant une résistance au gel/dégel à une composition à base de ciment, et consistant à additionner un mélange modifiant la viscosité contenant des microsphères polymères, des particules polymères au moins partiellement dégradables et/ou des additifs générateurs de gaz à des compositions à base de ciment. Les microsphères polymères, les particules polymères au moins partiellement dégradables et les additifs générateurs de gaz permettent d'obtenir des espaces vides dans la matrice du matériau, ces espaces vides permettant d'augmenter la durabilité de gel/dégel du matériau.
Construction Research & Technology Gmbh
Gowling Lafleur Henderson Llp
LandOfFree
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