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US 12,534,407 B2Granted
Method for the control of volume expansion of hydraulically setting compositions comprising steel making slag
AssigneeSika Technology AG
InventorsJerome Soudier, Alexandre Ben Harrath
Life of this patent
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Abstract
A method for controlling the volume expansion of a hydraulically setting composition including steel making slag, the method including a step of adding a silica source to the composition. Furthermore, hydraulically setting compositions obtained by such methods and their uses.
Claims18
A method for controlling the volume expansion of a hydraulically setting composition comprising steel making slag, said method including
- a step of adding a silica source to said composition;
- and
- a step of adding 0.05-10 wt.-%, relative to the weight of steel making slag, of an additive selected from the group consisting of sodium chloride, potassium chloride, magnesium chloride, calcium chloride, lithium hydroxide, lithium carbonate, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bi-carbonate, finely ground calcium carbonate, alkali metal nitrates, alkali metal nitrites, alkali metal thiocyanates, alkali metal salts or earth alkali metal salts of any of citric acid, formic acid, malonic acid, acetic acid, propionic acid, malic acid, or succinic acid, alkali metal silicates, calcium silicate hydrates, sugars or sugar acids, alkanolamines, and mixtures thereof.
Dependencies are inferred from the claim text.