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US 12,528,741 B2Granted
Compositions for controlling microbially induced concrete corrosion
AssigneeThe Regents of the University of Colorado, a body corporate
InventorsMark T. Hernandez, Ismael Justo Reinoso, Alejandro Caicedo-Ramirez
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Abstract
This invention provides in one aspect compositions that improve the corrosion-resistance of cementitious materials. In certain embodiments, the compositions of the invention inhibit the growth of acidophilic bacteria thriving in/on cementitious material.
Claims10
A composition comprising:
- a cementitious substrate and at least one fine aggregate associated with at least one heavy metal selected from the group consisting of cadmium (Cd), zinc (Zn), copper (Cu), silver (Ag), cobalt (Co), lead (Pb), molybdenum (Mo), and tungsten (W),
- wherein the fine aggregate is present throughout the composition and comprises at least one of granular activated carbon (GAC), steel slag, or a combination thereof,
- wherein the steel slag comprises about 20% to about 45% (w/w) of the fine aggregate;
- and
- wherein the fine aggregate further comprises sand in an amount of about 40 to about 60% (w/w) of the fine aggregate.
2 more elements
Dependencies are inferred from the claim text.