Abstract:
The invention relates to an anode for cathodic protection in form of strip with a catalyst-coated metal part continuously integral with an insulating element of polymer material. The activated metal part and the insulating material can be arranged on opposite faces of the strip, or the insulating element can consist of two rails accommodating the edges of the metal part. The insulating element can be painted with a colored or luminescent pigment to favor its identification and facilitate the putting in place of the anode.
Abstract:
A method of protecting a metal section in concrete. The method comprises the steps of providing a sacrificial anode and embedding the sacrificial anode in a porous matrix in the cavity; providing a source of DC power with positive and negative connections and electrically connecting one of the connections of the source of DC power to the metal section to be protected; electrically connecting the a sacrificial anode in series with the other connection of the source of DC power and spacing the source of DC power from the cavity and the connections to the source of DC power which comprise at least one of wires and cables; and driving an anode current density from the sacrificial anode in excess of 500 mA/m2. An apparatus of protecting a metal section in concrete is also disclosed.
Abstract translation:保护混凝土中金属部分的方法。 该方法包括以下步骤:提供牺牲阳极并将牺牲阳极嵌入在空腔中的多孔基质中; 提供具有正和负连接的直流电源,并将DC电源的连接中的一个电连接到待保护的金属部分; 将牺牲阳极与直流电源的另一连接串联连接,并将来自腔的直流电力源和与包括电线和电缆中的至少一个的直流电力源的连接间隔开; 并且从牺牲阳极驱动超过500mA / m 2的阳极电流密度。 还公开了一种保护混凝土中的金属部分的装置。
Abstract:
A cathode protection method of embedded CFRP anode for reinforced concrete structure includes the following steps. Provide a preformed groove with a predetermined shape and size in a surface of a protection area of a reinforced concrete body, and remove dust in the preformed groove. Provide a CFRP member on the surface of the protection area of the reinforced concrete body. Coat an electrical conductive adhesive material between side surfaces of the reinforcing column of the CFRP member and the preformed groove and between the reinforcing plate and the reinforced concrete body. Connect the CFRP member with a positive electrode of an external DC power supply and the steel reinforcing element with a negative electrode of the external DC power supply.
Abstract:
To provide an anode, corrosion-protecting structure of a concrete constructions using this, and a corrosion protection method capable of protecting electrical corrosion, with little generation of gas due to electrolysis of water or chlorine compounds, by decreasing as far as possible the amount of processing performed on the structural body in on-site construction work and suppressing the voltage that is conducted therethrough to a low level. [Solution] A corrosion-protecting structure (1) is constituted by attaching an anode (10) to the surface layer (3) of a corrosion-protecting body (4) through a first electrolyte layer (12) on one face of a conductive layer (11) formed as a sheet. The electrolyte is formed as a sheet. The first electrolyte layer (12) having adhesiveness is attached to the conductive layer (11) and the surface layer (3) of the corrosion-protecting body (4).
Abstract:
It is provided a steel with composite plating film providing rust prevention over a long time period and a method of manufacturing thereof. A composite plating film 24 is formed on a metal material 21. The film 24 has a plating film 23 made of a sacrificial anode metal and photocatalyst particles 22 dispersed and fixed in the plating film 23. The photocatalyst particle has a main body composed of a photocatalyst and a semiconductor material supported thereon. The composite plating film 24 is formed on the surface of the metal material 21 by electroplating, hot-dipping, chemical plating or the like.
Abstract:
Cathodic protection of steel in concrete is provided by locating an anode assembly including both a sacrificial anode and an impressed current anode in contact with the concrete and providing an impressed current from a power supply to the anode. The impressed current anode forms a perforated sleeve surrounding a rod of the sacrificial anode material with an activated ionically-conductive filler material between. The system can be used without the power supply in sacrificial mode or when the power supply is connected, the impressed current anode can be powered to provide an impressed current system and/or to recharge the sacrificial anode from sacrificial anode corrosion products.
Abstract:
It is described a metal anode for cathodic protection in form of mesh ribbon having meshes whose holes are of rhomboidal shape, characterised by having such holes of rhomboidal shape arranged with the major diagonal oriented along the direction of the ribbon length and by the fact that the side edges along the ribbon length are free from cutting protrusions. It is also described a method for obtaining such anode.
Abstract:
A method of protecting a metal section in concrete. The method comprises the steps of providing a sacrificial anode and embedding the sacrificial anode in a porous matrix in the cavity; providing a source of DC power with positive and negative connections and electrically connecting one of the connections of the source of DC power to the metal section to be protected; electrically connecting the a sacrificial anode in series with the other connection of the source of DC power and spacing the source of DC power from the cavity and the connections to the source of DC power which comprise at least one of wires and cables; and driving an anode current density from the sacrificial anode in excess of 500 mA/m2. An apparatus of protecting a metal section in concrete is also disclosed.
Abstract translation:保护混凝土中金属部分的方法。 该方法包括以下步骤:提供牺牲阳极并将牺牲阳极嵌入在空腔中的多孔基质中; 提供具有正和负连接的直流电源,并将DC电源的连接中的一个电连接到待保护的金属部分; 将牺牲阳极与直流电源的另一连接串联连接,并将来自腔的直流电力源和与包括电线和电缆中的至少一个的直流电力源的连接间隔开; 并且从牺牲阳极驱动超过500mA / m 2的阳极电流密度。 还公开了一种保护混凝土中的金属部分的装置。
Abstract:
Electrolytic protection of steel-reinforced concrete bodies such as bridges and building facades is achieved with carbon material inserted into the concrete body. The carbon material is connected to act as a anode with the steel reinforcement as a cathode, so that corrosive chloride ions migrate away from the steel reinforcement. The carbon material is inserted so as also to act as a reinforcement. In one arrangement carbon textile material is provided between inner and outer grout-filled plastics ducts fixed around post-tensioned steel cables. In another arrangement a carbon rod, or pin, is fixed between a concrete body and a steel I-beam.
Abstract:
Disclosed is a method for the cathodic protection (KKS) of the reinforcements of ferroconcrete edifices against corrosion. According to said method, a) one side of the structural joints of the concrete supporting elements is sealed, b) the KKS anodes are introduced into the structural joints, c) an ionically conductive gel is introduced into the joints that are closed on one side, and d) the structural joints are optionally sealed as a whole. Surprisingly, the required electrical conductivity can be reliably ensured during the entire application period with the aid of the ionically conductive gel, which is a prerequisite for effectively and reliably protecting the steel reinforcements of concrete structures against corrosion.