Concrete is designed to be durable, but it can still deteriorate because of corrosion, moisture, chemical exposure, mechanical damage, poor workmanship, or aging. Once concrete starts to crack, break away, lose bond, or expose reinforcement, choosing the right repair material becomes an important part of restoring the structure.

Concrete repair materials are specialized construction products used to restore damaged concrete, fill gaps and voids, improve bonding, repair structural areas, provide non-shrink grouting, and protect steel reinforcement against corrosion.

In Egypt, the appropriate material depends on the condition of the concrete, the type and depth of the repair, the presence of reinforcement, the required bond, and the exposure conditions.

iChem provides a range of concrete repair materials in Egypt covering cement-based repair materials, non-shrink grout, epoxy repair compounds, epoxy adhesives, and corrosion-protection primers.

Explore iChem concrete repair materials

Concrete repair materials are formulated specifically for repairing or restoring concrete rather than simply filling a surface defect.

The right material depends on what needs to be repaired and why the damage occurred.

For example:

• A localized surface defect may require a cement-based repair material.

• A structural repair may require a high-strength non-shrink repair material.

• A gap or damaged area requiring strong adhesion may call for an epoxy repair compound.

• Rebar anchoring requires an appropriate structural adhesive.

• Corroded reinforcement may require corrosion protection before the concrete repair is completed.

• Baseplates, voids, or equipment-support areas may require non-shrink grout.

This distinction matters because there is no single concrete repair product suitable for every repair condition.

Concrete repair materials can be grouped according to their chemistry, application, and the type of problem they are designed to address.

Cement-based repair materials are commonly used when a damaged concrete surface needs to be rebuilt or repaired with a compatible cementitious material.

They are particularly relevant for concrete surface repairs and applications where a cement-based repair system is appropriate.

iChem solution: ChemPaste C®

ChemPaste C® is a one-component powder containing pre-blended cements, chemical additives, and polymers. Water is added on site before application.

Its one-component format can simplify preparation because the material does not require the same type of multi-component mixing process used by epoxy systems.

Suitable consideration: concrete repair applications where a cement-based repair material is required.

Some repairs require more than surface restoration. Where the repair involves structural rehabilitation or areas requiring a high-strength repair material, the material selection becomes more demanding.

iChem solution: MasterCem R20®

MasterCem R20® contains blended non-shrink cements and chemical additives and is designed for durable structural repair.

It belongs to the category of materials that can be considered when the repair requires a high-strength, non-shrink cementitious system.

Suitable consideration: structural concrete repair and rehabilitation applications where the specified repair system requires these characteristics.

Grouting is different from ordinary surface patching.

A grout may be required to fill a defined space beneath equipment, around supports, or within other applications where maintaining dimensional stability is important.

iChem solution: CemGrout 920®

CemGrout 920® is a ready-to-use cementitious mix that requires the addition of water to produce a high-strength, non-shrink grout with predictable performance.

This makes it a relevant option when the application calls specifically for non-shrink cementitious grouting rather than a conventional concrete repair paste.

Epoxy-based repair materials are used when the application requires an epoxy system with strong adhesion and specific performance characteristics.

They can be useful for applications such as gap filling, bedding, bonding, and selected concrete repair conditions.

iChem solution: EpoMortar SF®

EpoMortar SF® is a two-component, fine-aggregate-filled epoxy bedding compound and adhesive. iChem describes it as a non-slumping, fast-curing material for bedding, gap filling, and concrete repair applications.

Suitable consideration: epoxy-based bedding, gap filling, bonding, and concrete repair applications.

Not every concrete repair involves replacing missing concrete.

Sometimes the critical requirement is bonding—for example, connecting reinforcement to existing concrete or creating a strong adhesive connection as part of a repair system.

iChem solution: EpoBond SF®

EpoBond SF® is a two-component, medium-viscosity epoxy adhesive designed for rebar anchoring and concrete repair.

This makes it particularly relevant to applications where reinforcement anchoring or epoxy bonding is part of the repair scope.

Concrete deterioration can involve reinforcement corrosion.

When steel reinforcement becomes exposed or corrosion is identified, repairing the concrete alone may not address the complete repair requirement. The reinforcement may also need appropriate corrosion protection as part of the specified repair system.

iChem offers two zinc-based primer options within its concrete repair range.

ChemZinc 1®

ChemZinc 1® is a single-component primer based on metallic zinc and epoxy resins.

According to iChem, it provides bonding between steel bars and concrete and combats corrosion by electrochemical means. Its single-component formulation does not require mixing between multiple components.

ChemZinc 2®

ChemZinc 2® is a two-component, cold-curing zinc-rich epoxy primer designed as an anti-corrosive, quick-drying primer for various paint systems. iChem also specifies corrosion protection for metal surfaces and compatibility with various paint systems.

The easiest way to narrow down a repair material is to start with the actual repair requirement, not the product name.

Important: product selection should be based on the project specification, substrate condition, repair geometry, exposure, required performance, and the manufacturer's technical data.

Before selecting a concrete repair product, ask a few practical questions.

1. What caused the damage?

A repair strategy should consider the cause of deterioration rather than treating only the visible defect.

Possible causes can include:

• Reinforcement corrosion

• Moisture exposure

• Chemical attack

• Mechanical damage

• Cracking

• Loss of concrete cover

• Poor bonding

• Voids or gaps

• Aging and deterioration

If the underlying cause is not addressed, a new repair may face the same problem later.

2. How deep is the repair?

A shallow surface repair and a deeper structural repair do not necessarily require the same material.

The repair depth, geometry, and substrate condition should be checked against the product's technical requirements.

3. Is reinforcement involved?

If steel reinforcement is exposed or requires anchoring, the repair system may need more than a cementitious patching material.

This is where products such as ChemZinc 1®, ChemZinc 2®, and EpoBond SF® may become relevant depending on the specified application.

4. Does the application require non-shrink performance?

For applications where dimensional stability and filling a defined space are important, a non-shrink grout may be more appropriate than a conventional repair material.

CemGrout 920® is iChem's cementitious non-shrink grout option.

5. Is epoxy bonding or gap filling required?

If the repair requires an epoxy bedding compound, adhesive, or gap-filling material, an epoxy system should be evaluated instead of automatically selecting a cement-based repair product.

EpoMortar SF® is designed for bedding, gap filling, and concrete repair applications.

iChem's Repairing Concrete range includes seven products designed for different repair and protection requirements:

• ChemZinc 1® — single-component zinc and epoxy primer.

• ChemZinc 2® — two-component zinc-rich epoxy anti-corrosion primer.

• CemGrout 920® — cementitious high-strength non-shrink grout.

• ChemPaste C® — one-component cementitious repair material.

• MasterCem R20® — high-strength material containing blended non-shrink cements and chemical additives for structural repair.

• EpoMortar SF® — non-slumping epoxy bedding compound and adhesive.

• EpoBond SF® — two-component epoxy adhesive for rebar anchoring and concrete repair.

The complete range is available through the iChem concrete repair materials category.

Concrete repair materials can be required across different types of construction and infrastructure work.

Surface deterioration, damaged areas, and localized concrete defects may require a compatible repair material selected according to the substrate and repair depth.

Structural rehabilitation requires careful assessment of the damaged area and selection of a repair system that matches the engineering requirements.

Products such as MasterCem R20® are positioned within iChem's range for durable structural repair applications.

When new reinforcement needs to be anchored into existing concrete, the adhesive system becomes an important part of the connection.

EpoBond SF® is specifically designed for rebar anchoring and concrete repair.

Non-shrink grout can be used where a defined space needs to be filled without relying on ordinary concrete shrinkage behavior.

CemGrout 920® is iChem's ready-to-use cementitious non-shrink grout.

Where reinforcement or metal surfaces require corrosion protection, zinc-rich or zinc/epoxy primers can be considered according to the repair specification.

iChem's ChemZinc 1® and ChemZinc 2® provide two different product formats for this category.

A visible crack, damaged edge, exposed rebar, or empty joint does not automatically tell you which repair product to use.

The material should be matched to:

Damage → Cause → Substrate → Repair depth → Exposure → Required performance → Application method

This approach is more useful than choosing a product based only on the words "concrete repair."

For example, a non-shrink grout has a different purpose from a repair paste, while an epoxy adhesive for rebar anchoring has a different role from a zinc-rich corrosion-protection primer.

Understanding that difference helps engineers, contractors, and project teams specify the appropriate repair system more accurately.

For construction and infrastructure projects, material selection is only one part of the repair process. Technical documentation, product specifications, application requirements, and project conditions also need to be considered.

iChem's concrete repair range is part of its wider construction chemicals solutions portfolio in Egypt.

For product specifications and technical documentation, project teams can also review the relevant product technical data sheets before application.

If you need assistance identifying the appropriate material for a specific repair condition, contact iChem for technical guidance.

Concrete repair materials are specialized construction products used to repair, restore, bond, grout, fill, or protect damaged concrete and related reinforcement components. The appropriate material depends on the repair condition and required performance.

Common categories include cement-based repair materials, structural repair materials, non-shrink grout, epoxy repair compounds, epoxy adhesives, and corrosion-protection primers.

A cementitious non-shrink grout is used when the application requires a grout designed to minimize shrinkage. iChem offers CemGrout 920® for this category.

Rebar anchoring may require a structural adhesive selected according to the project requirements. iChem's EpoBond SF® is a two-component epoxy adhesive designed for rebar anchoring and concrete repair.

Corrosion-protection materials may be used as part of a concrete repair system when reinforcement is exposed or corrosion protection is required. iChem offers ChemZinc 1® and ChemZinc 2® for zinc/epoxy-based corrosion protection applications.

Start by identifying the cause and extent of the damage, repair depth, substrate condition, reinforcement requirements, exposure conditions, and required performance. Then compare those requirements with the product's technical data and intended application.

Choosing a concrete repair material should begin with the repair condition, not simply the product category.

Whether the requirement involves surface repair, structural rehabilitation, non-shrink grouting, epoxy bonding, rebar anchoring, or corrosion protection, iChem provides a range of products for different concrete repair applications.

Need help selecting the appropriate concrete repair material for your project in Egypt?

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iChem — Construction Chemical Solutions for Concrete Repair and Rehabilitation