Non-efflorescing cementitious bodies

Details Non-efflorescing cementitious bodies Non-efflorescing cementitious bodies

C - Chemistry, Metallurgy

04

B

C04B 28/06 (2006.01) C04B 7/32 (2006.01) C04B 41/50 (2006.01) C04B 41/65 (2006.01)

Patent

CA 2406029

A non-efflorescing cementitious body is formed from sources of calcium aluminate, calcium silicate, calcium sulphate and reactive silica, these ingredients being present in such relative proportions that, upon hydration, both monosulphate (C3A.C~.12H) and hydrated alumina (AH3) are formed. Also disclosed is a hydraulic binder and a paste from which such bodies can be formed and a method for forming such bodies. In addition to exhibiting low efflorescence, these bodies retain satisfactory physical properties, especially good durability to natural weathering conditions.

L'invention concerne un corps cimentaire non-efflorescent réalisé à partir de sources d'aluminate de calcium, de silicate de calcium, de sulfate de calcium et de silice réactive, ces constituants étant présents dans des proportions telles que des monosulfates (C3A.Cs.12H) et de l'alumine hydratée (AH3) sont formés sous hydratation. L'invention concerne également un liant hydraulique et une pâte à partir desquels de tels corps peuvent être fabriqués, ainsi qu'un procédé de fabrication de tels corps. En plus d'une efflorescence faible, lesdits corps présentent des propriétés physiques satisfaisantes, en particulier une bonne résistance aux conditions climatiques naturelles.

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