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    Method and apparatus for cathodically protecting reinforced concrete structures
    32.
    发明授权
    Method and apparatus for cathodically protecting reinforced concrete structures 失效
    阴极保护钢筋混凝土结构的方法和装置

    公开(公告)号：US5292411A

    公开(公告)日：1994-03-08

    申请号：US892913

    申请日：1992-06-03

    Applicant: John J. Bartholomew ,  John E. Bennett ,  Barry L. Martin ,  Thomas A. Mitchell

    Inventor： John J. Bartholomew ,  John E. Bennett ,  Barry L. Martin ,  Thomas A. Mitchell

    IPC: C23F13/02 ,  E04B1/64 ,  E04C5/01 ,  C23F13/00

    CPC classification number: E04C5/01 ,  C23F13/02 ,  C23F2201/02

    Abstract: Cathodic protection of a reinforced concrete structure utilizes a metal anode such as a zinc anode in combination with a pressure sensitive ionically conductive hydrogel in contact with at least a portion of the surface of the anode. Preferably, the anode and ionically conductive hydrogel are flexible and supplied in roll form. The combination may further include the addition of salt to the hydrogel as well as application to the metal-hydrogel combination of Type III cement. The cathodic protection may be carried out with or without a power source.

    Abstract translation: 钢筋混凝土结构的阴极保护使用诸如锌阳极的金属阳极与与阳极表面的至少一部分接触的压敏离子导电水凝胶组合。 优选地，阳极和离子导电水凝胶是柔性的并且以卷形式供应。 该组合可以进一步包括向水凝胶中加入盐以及应用于III型水泥的金属 - 水凝胶组合。 阴极保护可以在有或没有电源的情况下进行。

    Electrodes for use in electrochemical processes
    34.
    发明授权
    Electrodes for use in electrochemical processes 失效
    用于电化学过程的电极

    公开(公告)号：US4957612A

    公开(公告)日：1990-09-18

    申请号：US12394

    申请日：1987-02-09

    Applicant: Ray F. Stewart ,  James C. Thompson

    Inventor： Ray F. Stewart ,  James C. Thompson

    IPC: C23F13/02 ,  C23F13/16 ,  E04B1/64

    CPC classification number: C23F13/16 ,  C23F13/02 ,  E04B1/642 ,  C23F2201/02

    Abstract: Electrodes for electrochemical processes, especially anodes for the cathodic protection of metal substrates, e.g. reinforcing bars in concrete, comprise a conductive core which acts as a current-distributing member, an outer member which provides an electrochemically active outer surface, and an intermediate member composed of a material which is of higher resistivity, and/or which is less electrochemically active, than the material of the outer member. The higher the resistivity of the intermediate member, the more regular the current distribution along the length of the electrode. When the intermediate member is less electrochemically active, this protects the core from corrosion if the outer member is damaged by physical means or through electrochemical erosion. Preferably at least one of the intermediate member and the outer member is composed of a conductive polymer, especially one comprising carbon black or graphite as conductive filler.

    Conductive cathodic protection compositions and methods
    35.
    发明授权
    Conductive cathodic protection compositions and methods 失效
    导电阴极保护组合物和方法

    公开(公告)号：US4806272A

    公开(公告)日：1989-02-21

    申请号：US757084

    申请日：1985-07-19

    Applicant: Robert E. Wiley

    Inventor： Robert E. Wiley

    IPC: C04B14/36 ,  C04B14/02 ,  C04B22/02 ,  C04B28/02 ,  C04B41/48 ,  C04B41/63 ,  C04B103/61 ,  C04B111/94 ,  C09D1/06 ,  C09D5/00 ,  C09D5/24 ,  C23F13/02 ,  H01B1/06

    CPC classification number: C04B14/022 ,  C04B41/483 ,  C04B41/63 ,  C09D5/24 ,  C23F13/02 ,  C23F2201/02

    Abstract: Disclosed are improved compositions useful in providing a conductive layer or coating on or within a substrate. The compositions contain elemental carbon and a polymeric matrix or binder. The improvement comprises employing a unique ground calcined, coal-based coke which approaches graphite in terms of its performance as a conductive additive or pigment but does not possess the disadvantages associated with the use of graphite.The unique coke employed in the compositions and methods of the present invention has a significant level of graphitic structure. This level of graphitization can be most easily recognized by utilizing x-ray powder diffraction. More specifically, when the value of E.sub.c, or the inverse peak width (of the 002 peak), is measured for this material using Mo K.alpha. radiation (.lambda.=0.71 .ANG.), the value is in the range of about 27 to about 80, and preferably about 28 to about 75.The final compositions employ a polymer resin or matrix system as a binder which, when allowed to dry or cure, in situ, is water-permeable. They are useful as cathodic protection coatings for concrete and other building materials which are reinforced with low carbon steels and the like.The invention also relates to the method of applying the compositions to the reinforced substrate, and the resulting coated articles.

    Abstract translation: 公开了可用于在基材上或内部提供导电层或涂层的改进的组合物。 组合物含有元素碳和聚合物基质或粘合剂。 该改进包括采用独特的研磨煅烧的煤基焦炭，就其作为导电添加剂或颜料的性能而言接近石墨，但不具有与使用石墨相关的缺点。 在本发明的组合物和方法中使用的独特焦炭具有显着水平的石墨结构。 通过利用X射线粉末衍射可以最容易地识别该水平的石墨化。 更具体地说，当使用MoKα辐射（λ= 0.71 ANGSTROM）对该材料测量Ec的值或其峰值峰值（002峰值）时，该值在约27至约80的范围内 ，优选约28至约75.最终组合物采用聚合物树脂或基质体系作为粘合剂，当其允许干燥或固化时，其是透水性的。 它们可用作混凝土和其他用低碳钢等增强的建筑材料的阴极保护涂层。 本发明还涉及将组合物施加到增强基底上的方法以及所得的涂覆制品。

    Treatment process for concrete
    40.
    发明授权
    Treatment process for concrete 有权

    公开(公告)号：US09598778B2

    公开(公告)日：2017-03-21

    申请号：US13735457

    申请日：2013-01-07

    Applicant: Gareth Glass ,  Adrian Roberts ,  Nigel Davison

    Inventor： Gareth Glass ,  Adrian Roberts ,  Nigel Davison

    IPC: C25B13/00 ,  C23F13/02 ,  C23F13/06 ,  C23F13/16 ,  E04C5/01

    CPC classification number: C23F13/02 ,  C23F13/06 ,  C23F13/16 ,  C23F2201/02 ,  C23F2213/21 ,  C23F2213/31 ,  E04C5/015

    Abstract: A single anode system used in multiple electrochemical treatments to control steel corrosion in concrete comprises a sacrificial metal that is capable to supporting high impressed anode current densities with an impressed current anode connection detail and a porous embedding material containing an electrolyte. Initially current is driven from the sacrificial metal [1] to the steel [10] using a power source [5] converting oxygen and water [14] into hydroxyl ions [15] on the steel and drawing chloride ions [16] into the porous material [2] around the anode such that corroding sites are moved from the steel to the anode restoring steel passivity and activating the anode. Cathodic prevention is them applied. This is preferably sacrificial cathodic prevention that is applied by disconnecting the power source and connecting the activated sacrificial node directly to the steel.

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