Method for enzymatic repair of cementitious surfaces
AssigneeWorcester Polytechnic Institute
InventorsNima Rahbar, Suzanne Frances Scarlata, Jessica Anne Rosewitz
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Abstract
An aqueous solution of carbonic anhydrase and calcium chloride is contacted with a cementitious surface defining at least one opening or fissure in the presence of ambient carbon dioxide to thereby cause the calcium chloride and carbon dioxide to react, whereby calcium carbonate precipitate from the solution and seals the opening or fissure.
Claims10
A method of sealing a cementitious surface comprising the step of physically contacting at least one opening or fissure of a cementitious surface with an aqueous solution of carbonic anhydrase and calcium chloride, the aqueous solution is exposed to an ambient atmosphere that includes carbon dioxide, whereby calcium carbonate is formed by a chemical catalyzation process performed by the carbonic anhydrase using ambient carbon dioxide, and precipitates to thereby seal the opening or fissure.
Dependencies are inferred from the claim text.