C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 28/02 (2006.01) C04B 38/02 (2006.01) C04B 38/08 (2006.01)
Patent
CA 2570175
An improved freeze-thaw durability wet cast cementitious composition is provided that uses in-situ production of gas by gas generating additives and optionally polymeric microspheres that are blended directly into the mixture. The gas generating additives and the polymeric microspheres provide void spaces in the material matrix, and such void spaces act to increase freeze- thaw durability of the material.
La présente invention a trait à une composition de ciment coulée par voie humide à résistance améliorée aux cycles gel-dégel mettant en oeuvre une production in situ de gaz par des additifs de génération de gaz et éventuellement des microbilles polymériques qui sont directement intégrées dans le mélange. Las additifs de génération de gaz et les microbilles polymériques produisent des espaces vides dans la matrice du matériau, et de tels espaces vides agissent pour accroître la résistance aux cycles gel-dégel du matériau.
Christensen Bruce J.
Vickers Thomas M. Jr.
Construction Research & Technology Gmbh
Gowling Lafleur Henderson Llp
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