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    HEAT AND FIRE RESISTANT GEOPOLYMER MATERIALS
    3.
    发明申请
    HEAT AND FIRE RESISTANT GEOPOLYMER MATERIALS 有权

    公开(公告)号：US20230090940A1

    公开(公告)日：2023-03-23

    申请号：US17909372

    申请日：2021-03-04

    Applicant: Jessica H. CUI ,  Futong CUI ,  Zhimin YU

    Inventor： Jessica H. CUI ,  Futong CUI ,  Zhimin YU

    IPC: C04B28/00 ,  C04B18/02 ,  C04B20/10 ,  C04B14/46 ,  C04B14/04 ,  C04B14/20 ,  C04B18/08 ,  C04B14/10

    Abstract: A light weight geopolymer concrete, having a specific gravity less than 2.0, more typically between 1 and 1.3, is provided that has compressive strength comparable to or greater than ordinary Portland concrete. The light weight geopolymer concrete has low shrinkage, expansion, and cracking, and substantially no loss of compressive strength when exposed to high temperatures of 800° C. or greater, as would occur in a fire. To be useful as a load bearing member for general applications, such as residential housing, the compressive strength of the light-weight geopolymer concrete should be at least 10 MPa, preferably greater than 12 MPa, for example greater than 15 MPa. For more demanding uses, the compressive strength should be near or at the compressive strength of concrete, that is, greater than 20 MPa, preferably greater than 30 MPa, and optimally greater than 35 MPa. To be useful during and after a fire, the strength must not be reduced by more than 20%, preferably not less than 10%, optimally not reduced at all when exposed to heat up to 800° C. Embodiments of the invention include low-density high-temperature-resistant geopolymer concrete which increases load bearing strength when exposed to temperatures above 400° C., preferably at 800° C. Key constituents for forming most embodiments include a geopolymer source such as fly ash, a cement-coated expanded vermiculite, a fiber such as wollastonite, and soluble silicates such as alkali silicates.

    Concrete product and methods of preparing the same
    4.
    发明授权
    Concrete product and methods of preparing the same 有权

    公开(公告)号：US11440844B2

    公开(公告)日：2022-09-13

    申请号：US16992075

    申请日：2020-08-12

    Applicant: S3 Concrete Technologies, Inc.

    Inventor： Jason S. Adams

    IPC: C04B28/18 ,  C04B14/06 ,  C04B14/02 ,  C04B14/48 ,  C04B14/46 ,  C04B16/06 ,  C04B14/38 ,  C04B40/00 ,  C04B111/60

    Abstract: A concrete product set by pouring a concrete slurry includes a) a concrete mixture; b) a graphene oxide admixture; c) a colloidal silica admixture; and d) at least one reinforcing fiber selected from the group of fibers. As the poured concrete slurry cures, the poured slurry hardens into a composite material product, and the composite material defines capillary structures that at least in part fill with silica and lime, and the surrounding composite material is embedded with graphene oxide flakes. In another exemplary embodiment, the present invention is directed to a process for preparing a concrete product. The process comprises the steps of a) preparing a concrete slurry; b) pouring the concrete slurry; and c) allowing the concrete slurry to cure. In another exemplary embodiment, the present invention is directed to the product itself; namely, a concrete product with or without fibers, or to the admixture(s).

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