...The general idea of impressed current and reference eletrodes testing was to place them into real conditions – soil or sea water - and expose the anodes to galvanostatic dissolution for a significant duration in complete accordance with manufacturer’s specifications, while measuring potential...

...Abstract In 2012, a cathodic protection (CP) trial was undertaken to establish the current requirements to protect the submerged and buried bare steel internal surfaces of monopiled windturbine structures in the North Sea. Aluminium alloy anodes were utilized for the CP trial system and a remote...

... of additional corrosion protection. The quickest and simplest solution was considered to be the application of cathodic protection (CP), and a galvanic anode system was preferred over an impressed current (ICCP) system on practicality and safety grounds. Aluminium alloy anodes were preferred over Zinc anodes...

...The anodes used for protection of steel in concrete usually consist of a piece of zinc attached to the reinforcing steel using wires or straps to provide an electrical path for the movement of electrons from the anode to the protected steel cathode. In all of these anodes, the anode is surrounded...

...Abstract This paper addresses projecting the performance of point anodes for patch repairs applications as function of service parameters and anode aging. Input data from a concurrent experimental test program are presented as well. Modeling of a generic patch configuration was implemented...

...Abstract Galvanic anodes have now been used to mitigate corrosion of steel in reinforced concrete structures for several years. This paper presents results of a test on a highway bridge deck where anodes from two different suppliers were installed and monitored by the Pennsylvania DOT. Results...

...Abstract Embedded sacrificial zinc anodes have emerged as a promising means of enhancing the durability of repairs to corrosion-deteriorated concrete structures. Sacrificial zinc anodes are encased in grout materials that are formulated with the intent of maintaining the zinc anode...

... Structures Marine Environment Fibre Optic Sensors Anodes INTRODUCTION Today there is a significant trend towards the design of large complex bridge structures with unusual configurations. Owners are seeking to build bridges that make a design statement rather than relying on traditional simple forms...

...TABLE 1 MATERIALS AND TEST CONDITIONS Anodes evaluated C and W Embedding media Ordinary Repair Concrete (ORC): 0.41 w/c, 658 pcy (390.38 Kg/m³), Type II cement, 3/8” Aggregates. Shaded portion near the center ( Figure 1 ) - 6 Kg/m³ chloride ion Replication...

... results. This paper presents test data for the application of zinc anodes activated by a combination of lithium nitrate and lithium bromide in indoor test blocks, large outdoor test slabs, and field trials, all operational from 5 to nearly 8 years. Protective current delivered by GCP in indoor test...

...anodes cathodes cathodic protection concrete corrosion data collection monitoring potentials scour telemetry voltage wireless INTRODUCTION The galvanic systems are simple to install, requiring only a direct connection to the protected metal, and require minimal monitoring over...

...The slabs were cast on 11/23/04 and kept curing in the molds until 12/1/04 when the slabs were demolded and placed horizontally, elevated 1 ft above ground, in an outdoor test yard ~ 20 km inland from Tampa Bay in Florida. The main anode was kept provisionally wired to the four rebars in the Cl...

...Abstract The performance of zinc anodes embedded in mortar activated with lithium chemicals was studied with polarization scans, laboratory test blocks, larger test slabs, and a demonstration field trial. Environments studied included an indoor setting at 55% and 80% relative humidity, an outdoor...

... power supply and wiring, has no tolerance to electrical shorts between anode and steel, and requires a commitment to long-term monitoring and maintenance. Since the mid 1990s, there has been a renewed interest in the technique of Galvanic Cathodic Protection (GCP) systems. GCP does not require the use...

...RESULTS AND DISCUSSION Test blocks were energized and operated at room temperature and at two different conditions, about 55% and 80% relative humidity (RH). Protective current flow between anode and steel was measured periodically, and occasional tests were conducted to determine circuit...

...In this paper, results from the field application of performance enhancing chemicals to metallized zinc anodes on three concrete structures are reported. These structures: a parking garage, a condominium and a bridge substructure crosshead, vary greatly in both structural design and environment...

...cathodic protection current density anodes retrofit optimisation INTRODUCTION Many early Cathodic Protection (CP) designs in the North Sea were based on basic criteria drawn from operational experience in other regions of the world particularly the Gulf of Mexico. Anticipated North Sea service...

...Arc-sprayed zinc has recently found favor as an anode on bridge substructures, principally because the zinc coating can be easily applied to the complex shapes of substructure surfaces. A survey conducted in 1994 identified 22 systems in 7 states and 2 countries using metallized zinc anodes on over...

...This is an important key to understanding how these tables are related. For example, there may be several anode loops (typically two) associated with a given rectifier. Each rectifier ID is associated with one and only one location (and other data). The database software enforces this relationship...

...INTRODUCTION The NACE International Standards RPO387-87 ¹ and RPO492-92 ² cover the metallurgical and inspection requirements for cast anodes for pipelines and offshore applications. These standards cover the physical characteristics of anodes in addition to the foundry...