Embedded Galvanic Anodes

Embedded Galvanic Anodes (EGA™) are zinc metal anodes encapsulated individually in a specially formulated mortar. These anode coils can be connected to both concrete and steel reinforcements. To ensure optimal strength and resistance, the repair mortar should be applied following the instructions provided in the data sheet.


PRODUCT DESCRIPTION

Sacrificial Anode, made of a zinc metal core, is a protective coating used on concrete surfaces and metal reinforcements to enhance and strengthen the rebar. This product significantly increases structures’ lifespan, durability, and stability over an extended period. Afzir Company recommends using sacrificial anodes for contractors and builders due to their ease of installation, quick implementation, and cost-effectiveness compared to other retrofitting and improvement methods.
The protective properties of sacrificial anodes stem from their highly negative reduction potential. When the sacrificial anode is close to a metal with a higher reduction potential, it converts that metal into a cathode. By utilizing the flow of current, it transfers oxidizing agents through electrons. As a result, the sacrificial anode is consumed instead of the vital metal present in the desired structure, such as steel reinforcement. Structures or constructions equipped with sacrificial anodes can maintain their mechanical properties for many years, ensuring optimal performance. Consequently, such structures have significantly longer service lives compared to conventional ones.
Sacrificial anodes of alloy type 1 are specifically formulated in saltwater or marine environments. They find extensive applications in reservoirs, pipelines, docks, vessels, and other marine settings.
Sacrificial anodes of alloy type 2 incorporate standard alloys and are effective in freshwater and buried structures in soil. These anodes can be used with or without backfill.

Composition (%)

Alloy Type 1 (Type I)

Alloy Type 2 (Type II)

Aluminum

0.1-0.5%

Max 0.005%

Cadmium

0.025-0.07%

Max 0.003%

Iron

Max 0.005%

Max 0.0014%

Lead

Max 0.006%

Max 0.003%

Copper

Max 0.005%

Max 0.002%

Other Materials

Max 0.1%

Zinc

Remaining

Remaining

Price of Sacrificial Anodes: 

The mass and dimensions of sacrificial anodes significantly impact their performance. A higher mass implies a longer lifespan before depletion. Therefore, it is essential to determine the desired mass and dimensions of sacrificial anodes based on the intended objectives before procurement. The price of sacrificial anodes varies depending on factors such as dimensions, purity percentage, weight, the presence or absence of backfill, alloy type, and market fluctuations. For more information or accurate price inquiries regarding sacrificial anodes or other corrosion protection products, please contact our experts at Afzir through the communication channels provided on the Afzir website.

 

Features


  • No need for an external power supply
  • Easy installation
  • Low voltage
  • Reduced maintenance and repair costs
  • Uniform distribution
  • High service life
  • Prevention of corrosion in steel rebars or other important metal elements

Applications


  • Wharves
  • Tanks
  • Pipelines
  • Structures buried in the ground
  • Post-tensioned or pre-tensioned structures
  • Structures exposed to chloride
  • Reinforcement strengthening for corroded rebars.

Packaging


  • 30 pieces per package

Colour


technical specifications

Physical Properties

Appearance of the product

One-component grey powder
Mixing ratio

4-5 liters of water for 25 kilos of grout powder

Operating temperature

7-32℃
Final setting time

2-8 hours

Mechanical Properties

Specification

Sample 8160CP

Sample 8105CP

Sample 8065CP

Color

Orange

Blue

Green

Packaging (Layers/Pack)

24

24

30

Total Anode Weight

370g

340g

240g

Zinc Type

ASTM B418, Type II

ASTM B418, Type II

ASTM B418, Type II

Area of Zinc

279cm2

258cm2

133cm2

Exterior Surface

258cm2

258cm2

215cm2

Zinc Weight

160g

105g

65g

 

For Engineers

Our product is designed to enhance efficiency and improve the performance of structural elements by utilizing anodes to extend their life cycle. With the assistance of a zinc metal core, it generates a small electric current that effectively safeguards concrete and steel reinforcements from corrosion. This proactive protection mechanism significantly contributes to the longevity and durability of the structures, ensuring their optimal performance over time.

For Contractors

 The sacrificial anode serves as a protective coating for concrete, applied to both concrete surfaces and metal reinforcements to enhance and reinforce the rebar. By effectively extending the lifespan, strengthening durability, and ensuring long-term stability, this product significantly contributes to the structure’s overall strength. Afzir Company highly recommends the sacrificial anode product to contractors and builders, citing its ease of installation, efficiency, and cost-effectiveness when compared to alternative retrofitting and improvement methods.

Application Instructions

Surface Preparation:

To ensure optimal adhesion and strength, it is imperative to prepare the surface appropriately. Begin by removing any loose or delaminated concrete as per the recommended guidelines. Clearly mark the desired area and eliminate damaged concrete from the surface. It is crucial that both the desired surface and reinforcement are thoroughly cleaned and free from any extraneous materials.

Placement:

The anode should be carefully positioned in the desired area, creating a suitable layer over the reinforcement. Additionally, ensure that all joints on the reinforcement surface are adequately covered with repair mortar. For effective electrical connection and optimal anode performance, it is important to note that only structures with uncoated steel reinforcement are suitable. The continuity and durability of the electrical connection must be verified through an armature test. This can be achieved by employing common methods such as wire connections or welded connections.

To establish an electrical bond, hand-tighten two pairs of pre-twisted wires around the steel armature, enclosed within a double sheath. Twisted wire connections enable a proper electrical connection at a specific distance from the location of the anode on the steel armature.

Guide to Quality Control (QC)

Safety Precautions:

  •  Use gloves to prevent skin allergies and protect your hands.
  • Wear safety glasses to prevent eye irritation and safeguard your eyes.
  • use appropriate clothing, gloves, and masks for added protection when working in environments exposed to chemicals.
  •  Ensure the work area is airy to maintain a safe environment.

Emergency Procedures:

  •  In the event of skin contact, promptly wash the affected area with soap and water.
  • If the product comes into contact with your eyes, immediately rinse them with plenty of water and seek medical attention.
  •  If you experience breathing difficulties using the product, consult a doctor immediately.

Environmental Considerations:

  •  The product does not pose any environmental hazards.

Maintenance:

  •  The product has a shelf life of up to 36 months from production.
  •  If storing the product, place it vertically on special protective pallets in a dry location, away from direct sunlight.

technical documents

Technical Data Sheet (TDS)

Download

Safety Data Sheet (SDS)

Download

Drawings

Download

Photo Gallery

Frequently Asked Questions

What is meant by embedded anode?

Galvanic sacrificial anodes are encapsulated anodes made of zinc metal that are individually designed in a special mortar.

What is the purpose of embedded anode?

The galvanic anode or embedded anode is the main component of the galvanic cathodic protection (CP) system, which is used to protect buried or submerged metal structures against corrosion.

How does the embedded anode increase the efficiency and improve the performance of structural elements?

This product increases the efficiency and improves the performance of structural elements with the help of anodes to increase the life cycle of the structure. The zinc metal core creates a small electrical current generated to protect concrete and steel reinforcements from corrosion.

In what structures does the embedded anode make a suitable electrical connection?

For proper electrical connection and anode performance, only structures with uncoated steel reinforcement are suitable.

What metals can be used as embedded anodes?

Three metals zinc, aluminum and magnesium can be used as sacrificial anodes.

Why is zinc used as an anode?

Zinc is an excellent choice for an embedded anode because it is a very active metal that can be sacrificed. Zinc anodes are recommended for saltwater applications such as boat hulls, tanks, rudders and docks.

When do you use a sacrificial anode?

Sacrificial anodes are used to protect ship hulls, water heaters, pipelines, distribution systems, above ground tanks, underground tanks and refineries. Anodes in sacrificial anode cathodic protection systems should be periodically inspected and replaced when used.

In what structures is the sacrificial anode used?

The sacrificial anode is used for structures that are exposed to chlorides, as well as for concrete and masonry structures that need strengthening.

What elements is the sacrificial anode resistant to?

This anode is very resistant to carbon and sulfate.

Reviews

There are no reviews yet.

Be the first to review “Embedded Galvanic Anodes”