Porous material and cementitious compositions prepared...

Details Porous material and cementitious compositions prepared... Porous material and cementitious compositions prepared...

C - Chemistry, Metallurgy

04

B

6/216, 261/58

C04B 38/08 (2006.01) C04B 14/28 (2006.01)

Patent

CA 2289703

A method of treating a shell sand by heating it to 300 °C maximum for a time sufficient to remove substantially all of the water and organic content while maintaining substantially all of the inherent porosity of the shell sand. Generally, the time required varies between 10 minutes maximum at 300 °C to about 1 hour at 95 °C. The resulting material is useful in cementitious compositions, particularly mortars, these being characterized by a high flexibility and an exceptionally high degree of resistance to fire or heat.

L'invention porte sur un procédé de traitement de sable coquillé consistant à le chauffer au maximum à 300 DEG C pendant un temps suffisant pour en éliminer l'eau et les éléments organiques tout en lui conservant sa porosité inhérente. Normalement le temps varie entre 10 minutes au maximum à 300 DEG C et environ une heure à 95 DEG C. Le produit résultant peut s'utiliser dans les mélanges à base de ciment et en particulier dans des mortiers caractérisé par leur malléabilité et leur résistance élevée à la chaleur.

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