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公开(公告)号：US20230192548A1
公开(公告)日：2023-06-22
申请号：US18110484
申请日：2023-02-16
发明人： Shuai Wang , Nima Rahbar , Suzanne F. Scariata
CPC分类号： C04B24/14 , C04B41/63 , C12N11/14 , C12N9/88 , C12Y402/01001 , E01C7/147 , E01C7/35 , C04B2111/72
摘要： Methods for repair of cracks and niches in concrete using carbonic anhydrase embedded in a gelatin, hydrogel, or other aqueous matrix are provided. A durable corrosion resistant concrete mix containing carbonic anhydrase is provided, as are methods of making and using the durable corrosion resistant concrete. Corrosion resistance and durability derive from decreased porosity compared to concrete without the enzyme, conferring decreased access of deleterious materials such as chloride ions to interior portions of the concrete.
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公开(公告)号：US20180244585A1
公开(公告)日：2018-08-30
申请号：US15903565
申请日：2018-02-23
CPC分类号： C04B41/5012 , C04B41/009 , C04B41/4535 , C04B41/501 , C04B41/65 , C04B2103/0001 , C04B2111/72 , C12N9/88 , C12P3/00 , C12Y402/01001 , C04B28/02 , C04B41/455 , C04B2103/001
摘要： 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.
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公开(公告)号：US20230117517A1
公开(公告)日：2023-04-20
申请号：US17943548
申请日：2022-09-13
发明人： Nima Rahbar , Suzanne F. Scarlata , Shuai Wang
摘要： Materials and methods for a rapid and effective way to create a carbon negative self-healing construction material are described. The construction material uses sand aggregates, a trace amount of catalyst, a small dosage of scaffolding material with a crosslinking agent, and a calcium source. The curing is performed at a high temperature for a short period or at room temperature for a long period. The catalyst-driven method to bridge the sand particles results in a dense, stiff, strong, and tough structural material, which upon exposure to calcium source and CO2 heals itself repeatably.
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公开(公告)号：US10647617B2
公开(公告)日：2020-05-12
申请号：US15903565
申请日：2018-02-23
IPC分类号： C04B41/50 , C04B41/65 , C04B41/45 , C12P3/00 , C12N9/88 , C04B41/00 , C04B111/72 , C04B103/00
摘要： 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.
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公开(公告)号：US20240351954A1
公开(公告)日：2024-10-24
申请号：US18639498
申请日：2024-04-18
发明人： Nima Rahbar , Shuai Wang , Suzanne Scarlata
IPC分类号： C04B35/52 , B28B11/24 , C04B35/626 , C04B35/64 , C12P3/00
CPC分类号： C04B35/52 , C04B35/6264 , C04B35/62655 , C04B35/64 , C12P3/00 , B28B11/24 , C04B2235/422 , C04B2235/442 , C04B2235/48 , C04B2235/5436 , C04B2235/6027 , C04B2235/606 , C04B2235/656
摘要： A carbon-negative Engineering Structural Material (ESM) has a compressive strength approaching that of concrete and relies on a carbon-absorbing enzyme for crystalline formations formed cooperatively with a porous structure to achieve load-bearing properties. A tough scaffold forms through capillary suspension, a technique that utilizes capillary forces to concentrate particles in a liquid matrix. Carbonic anhydrase, a zinc-containing enzyme extracted from bovine erythrocytes, is harnessed to grow mineral materials, and the capillary suspension is used to create a construction material, including sand and a polymer. This combination enables the incorporation of precipitated calcium minerals into the structure, resulting in the development of water-resistant and load-bearing construction materials.
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