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    CEMENTS REINFORCED WITH GRAPHENE NANOPLATELETS OR HELICAL CARBON NANOTUBES
    3.
    发明申请
    CEMENTS REINFORCED WITH GRAPHENE NANOPLATELETS OR HELICAL CARBON NANOTUBES 有权

    公开(公告)号：US20220242787A1

    公开(公告)日：2022-08-04

    申请号：US17588586

    申请日：2022-01-31

    申请人： Northwestern University

    发明人： Ange-Therese Akono

    IPC分类号： C04B28/04 ,  C04B14/02

    摘要： Methods for the dispersion and synthesis of graphene nanoplatelet-cement composites and helical carbon nanotube composites with high concentrations of graphene nanoplatelets or helical carbon nanotubes that do not require chemical dispersion aids or dispersion-enhancing chemical surface functionalization are provided. Also provided are the reinforced cement composites made using the methods.

    Graphene reinforced concrete
    4.
    发明授权
    Graphene reinforced concrete 有权

    公开(公告)号：US11339093B2

    公开(公告)日：2022-05-24

    申请号：US16960988

    申请日：2019-03-12

    申请人： University of Exeter

    发明人： Monica Craciun ,  Dimitar Dimov ,  Saverio Russo

    IPC分类号： C04B14/02 ,  C04B40/00

    摘要： A reinforced concrete material is described comprising a cementitious material (22) in which graphene is substantially uniformly distributed. A method of production of concrete is also described comprising the steps of forming a substantially uniform suspension (20) of graphene with water, and mixing the suspension (20) with a cementitious material (22) to form a concrete material (28).

    SEAMIX: BASALT AND GRAPHENE INFUSED CONCRETE ADMIXTURE FOR PREPARING CEMENTITIOUS COMPOSITION WITH NON-POTABLE WATER
    6.
    发明申请
    SEAMIX: BASALT AND GRAPHENE INFUSED CONCRETE ADMIXTURE FOR PREPARING CEMENTITIOUS COMPOSITION WITH NON-POTABLE WATER 有权

    公开(公告)号：US20220135480A1

    公开(公告)日：2022-05-05

    申请号：US17083721

    申请日：2020-10-29

    申请人： Rey J. Rubio

    发明人： Rey J. Rubio

    IPC分类号： C04B28/04 ,  C04B20/00 ,  C04B14/46 ,  C04B14/02 ,  C04B14/10 ,  C04B22/14 ,  C04B22/12 ,  C04B22/06 ,  C04B18/14

    摘要： An admixture for making a high-strength concrete with any type of water, including potable water, freshwater, saltwater, brackish water, reclaimed water or any other non-potable water. The admixture consists of basalt fibers, graphene nanoplatelets, calcium sulfide, calcium chloride, magnesium oxide and nanoclays. The admixture can be added to the cement to supplement it to increase the overall compressive strength, or the amount of cement used can be reduced by the amount of admixture added to shorten cure times. A concrete mix can also be prepared by replacing the calcium chloride with silica fume, reducing the amount of cement used, and introducing locally sourced aggregates, coarse and fine, to yield Ultra High Performance Concrete. Products made from the concrete incorporating the admixture have increased compression strength, improved cure times, reduced water consumption and corrosion, increased durability and workability, drastically reduced freeze-thaw effects, and superior crack control.

    CONCRETE PRODUCT AND METHODS OF PREPARING THE SAME
    7.
    发明申请
    CONCRETE PRODUCT AND METHODS OF PREPARING THE SAME 有权

    公开(公告)号：US20220024071A1

    公开(公告)日：2022-01-27

    申请号：US17382456

    申请日：2021-07-22

    申请人： S3 Concrete Technologies, Inc.

    发明人： Jason S. ADAMS

    IPC分类号： B28C7/00 ,  C04B14/02 ,  C04B14/48 ,  C04B14/06 ,  C04B16/06 ,  B28B11/04

    摘要： A concrete product set by pouring a concrete slurry includes a concrete mixture, an aluminum-coated colloidal silica admixture, and optionally, 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 concrete product defines capillary structures that at least in part fill with aluminum-coated silica and lime. Optional graphene oxide may be used in the concrete slurry, in which embodiment the surrounding aggregate and cement is embedded with graphene oxide flakes. A process for placing a jointless and/or fiberless slab made from the concrete product includes preparing a concrete slurry, pouring the concrete slurry onto substrate, and allowing the concrete slurry to cure.

    Water Swellable Cement Sheath on Demand, with Sensing Capability
    10.
    发明申请
    Water Swellable Cement Sheath on Demand, with Sensing Capability 有权

    公开(公告)号：US20210079287A1

    公开(公告)日：2021-03-18

    申请号：US16570783

    申请日：2019-09-13

    申请人： Saudi Arabian Oil Company

    发明人： Simone Musso ,  Ashok Santra

    IPC分类号： C09K8/467 ,  C04B28/02 ,  C04B14/38 ,  C04B14/48 ,  C04B14/02 ,  C04B22/06 ,  C04B22/04 ,  E21B33/14 ,  E21B47/00 ,  E21B36/04

    摘要： A method of sealing propagating cracks in a sensor-laden cement sheath comprising the steps of monitoring an electrical resistivity of the sensor-laden cement sheath to produce a measured value, wherein the sensor-laden cement sheath comprises a conductive sensor, an on-demand expanding agent, and a cement, activating a heat source when the measured value of the electrical resistivity is greater than an activation threshold, increasing a temperature of the sensor-laden cement sheath with the heat source to an activation temperature, wherein the activation temperature is operable to initiate a reaction between the on-demand expanding agent and water, wherein the activation temperature is greater than a formation temperature, reacting the on-demand expanding agent with water to produce a swelled agent, wherein the swelled agent occupies a greater volume than the on-demand expanding agent, and sealing the propagating cracks in the sensor-laden cement sheath with the swelled agent.