Lightweight concrete compositions containing antimicrobial...

C - Chemistry – Metallurgy – 04 – B

Patent

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C04B 16/08 (2006.01)

Patent

CA 2644417

A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, and from 0 to 50 volume percent of aggregate, where the particles contain an antimicrobial agent; where the sum of components used does not exceed 100 volume percent, and where after the lightweight concrete composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The concrete composition can be used to make concrete masonry units, construction panels, dining tables, counter surfaces, bench tops, and/or examination tables as well as other articles.

La présente invention concerne une composition de béton léger contenant de 10 à 90 pour cent en volume d'une composition de ciment, de 10 à 90 pour cent en volume de particules ayant un diamètre moyen de particules allant de 0,2 mm à 8 mm, une masse volumique apparente allant de 0,03 g/cm3 à 0,64 g/cm3, un rapport longueur/diamètre allant de 1 à 3, de 0 à 50 pour cent en volume d'agrégat, les particules contenant un agent antimicrobien ; la somme des composants utilisés n'excédant pas 100 pour cent en volume, et après avoir séché, la composition de béton léger a une résistance à la compression d'au moins 1700 psi telle que mesurée selon la norme ASTM C39 après 7 jours. La composition de béton peut être utilisée pour fabriquer des unités de maçonnerie en béton, des panneaux de construction, des tables à manger, des contre-surfaces, des plans de travail et/ou des tables d'examen ainsi que d'autres articles.

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