Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing
Patent
1990-08-09
1991-12-17
Group, Karl
Compositions: coating or plastic
Coating or plastic compositions
Inorganic settable ingredient containing
106789, 106790, 106801, 106690, 106691, C04B 7153
Patent
active
050731980
ABSTRACT:
An improved method of making a building material comprising activating slag with an activator of Portland cement, an acidic component and a basic component. The acidic component is a phosphate or a mixture of phosphates in an amount of 2 to 40% by weight based on the amount of the slag and activator, which serve as binding agents. The phosphate or mixture of phosphates have surface tension reducing action or a detergent or mixture of detergents is added to the binding agents in an amount of 0.1 to 2% by weight of the binding agents. The basic component is present in an amount of 2 to 20% by weight based on the amount of the binding agents. The basic component is magnesium oxide, or magnesium oxide in combination with earth metal oxides selected from the group consisting of calcium oxide, aluminum oxide, titanium oxide, zirconium oxide, and zinc oxide, with the amount of calcium oxide not exceeding 3% by weight based on the slag. The Portland cement is present in an amount effective to increase the mechanical strength of the building material but not exceeding 40% by weight based on the slag. The concentration of lime in the slag and of calcium in the activator is such that the building material has a sufficiently low calcium content whereby substantially to preclude carbonation within the building material.
Green Anthony J.
Group Karl
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