C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 18/06 (2006.01) C04B 18/16 (2006.01) C04B 28/04 (2006.01)
Patent
CA 2457765
The present invention relates to settable compositions for general purpose concrete construction containing Class-F fly ash, Class-C fly ash or slag, and cement kiln dust (CKD) as a substantial replacement for Portland cement conventionally used in such compositions. The compositions of the present invention provide high early strength thereby allowing the concrete structure to be put into service sooner, reducing labor cost, and allowing precast concrete and concrete masonry manufacturers to achieve rapid form and mold turnover.
L'invention concerne des compositions durcissables destinées à des constructions de béton polyvalentes. Ces compositions contiennent des cendres volantes de classe F, des cendres volantes ou des scories de classe C, et des poussières de four à ciment (CKD) en tant qu'éléments remplaçants substantiels du ciment Portland habituellement utilisé dans de telles compositions. Ces compositions présentent une résistance initiale élevée, ce qui permet de mettre en service plus rapidement la structure de béton et de diminuer les coûts de main d'oeuvre. Ces compositions permettent en outre que les fabricants de béton préfabriqué et de maçonneries de béton effectuent une rotation rapide des moules et des formes.
Barbour Ronald Lee
Ridout & Maybee Llp
LandOfFree
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