Additive for hydraulic binder useful to prevent the formation of rust-colored stains at the surface of hydraulic compositions
AssigneeChryso
InventorsBruce Gambrell, Brian D Breitzman
Life of this patent
Estimating the term…
Abstract
A method for preventing formation of rust-colored stains on the surface of a hydraulic composition includes mixing the hydraulic composition with an additive for hydraulic binder including at least a dialkanolamine including from 2 to 8 carbon atoms, and at least a polyol preferably chosen from a diol, a triol, a tetraol and mixtures thereof. Other uses include a grinding aid for hydraulic binder precursor, and/or improving the compressive strength of a set hydraulic composition.
Claims8
A method for preventing the formation of rust-colored stains at the surface of a hydraulic composition, said method comprising the step consisting of mixing a hydraulic composition or a constituent of a hydraulic composition with an additive for hydraulic binder comprising:
- water
- diisopropanolamine, and
- a polyol,
- wherein, in the hydraulic composition, the weight ratio of diisopropanolamine to the hydraulic binder is from 1×10−4 to 0.0005.
Dependencies are inferred from the claim text.