RC430 Concrete Repair Mortar

Additives and chemical materials

RC430 Concrete Repair Mortar

کیسه ۲۰ کیلویی

One of the common issues in concrete construction and cement surfaces is their deterioration and honeycombing, caused by various factors such as concrete sticking to the formwork surface during stripping, partial destruction of concrete due to reinforcement corrosion, poor concrete quality or improper pouring process, and impacts on the surface.

To address these problems, a mortar is needed for surface repairs which, in addition to matching the concrete’s composition, offers suitable adhesion and grading.

Concrete repair mortar is produced from cement, fine aggregates, polypropylene fibers, and copolymer resins, and becomes ready for use after mixing with water.

Thanks to its special formulation, this product exhibits high adhesion to various concrete and cement surfaces, along with long‑lasting stability and durability.

Being non‑shrink, the mortar will not develop cracks caused by shrinkage after application.

In addition, using this product results in a seamless, high‑quality surface with a smooth and uniform texture.

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Buying RC430 Concrete Repair Mortar

When purchasing concrete repair mortar, special attention should be paid to the quality of raw materials, formulation, compliance with standards, and the credibility of the manufacturer’s brand. Using low-quality products may not only fail to improve structural repairs but may also cause new problems.

One reliable source for obtaining this product is Zorlu Shimi, which, with years of experience in producing chemical additives for concrete, has managed to offer high-quality products with proven performance. Buying from this company means receiving a standard product, professional technical advice, and after-sales support. Moreover, Zarloo Shimi, through proper packaging and fresh production dates, ensures that the product you receive will deliver the best performance in your project.


Properties and Effects of RC430 Concrete Repair Mortar

Using RC430 concrete repair mortar results in significant positive changes in the performance of the structure. Key properties and effects of this product include:

  • Increased structural strength: Strengthens damaged areas, improving the load-bearing capacity of the structure.
  • Resistance to freeze–thaw cycles: Anti-freeze agents and proper grading ensure performance remains in cold climates.
  • High adhesion to old concrete: Ensures the repaired section and the original concrete act as one.
  • Chemical resistance: Resistant to chloride ions, sulfates, and other corrosive agents.
  • High durability and longevity: Repairs made with this product withstand environmental wear for a long time.

Consumption of RC430 Concrete Repair Mortar

The required amount depends on the extent and depth of the damage. On average, for each square meter at a thickness of 1 cm, about 18–20 kg of powder is needed. However, surface condition, grading, and mortar density can alter this amount. It is recommended to consult Zorlu Shimi’s technical experts before starting the project to calculate the exact required amount based on site conditions.


Applications of RC430 Concrete Repair Mortar

Due to its outstanding mechanical and chemical properties, RC430 concrete repair mortar is widely used in construction and industrial projects under various climatic and environmental conditions:

  • Repair of damaged structural components: Columns, beams, and concrete slabs with cracks, breaks, or reduced strength due to heavy loading, impacts, or aging regain their original strength and integrity.
  • Restoration of traffic- or marine-exposed surfaces: Concrete surfaces of bridges, docks, and other structures exposed to constant traffic or wave impact are reinforced to handle heavy loads again.
  • Chloride ion corrosion control: In coastal and marine environments, RC430 blocks chloride ion penetration that leads to rebar corrosion, restoring damaged areas.
  • Filling of cavities and spalling: Completely fills voids, pores, and spalled areas, creating a smooth and strong surface.
  • Increased surface chemical resistance: In industrial environments with constant contact with corrosive chemicals, it forms a protective layer, significantly increasing chemical durability.

Safety Notes for RC430 Concrete Repair Mortar

For safe use of this product, observe the following:

  • Wear gloves, safety goggles, and a mask while working.
  • Avoid direct contact (dry or wet) with skin and eyes.
  • Store in a dry, cool place away from direct sunlight.
  • Prevent the product from freezing.
  • In case of contact with skin or eyes, wash immediately with plenty of water and seek medical advice if necessary.

Storage and Shelf Life of RC430 Concrete Repair Mortar

  • Shelf life: 1 year in original packaging
  • Storage conditions: In a sealed container, away from frost and direct sunlight
  • Optimal storage temperature: +10°C to +30°C

Standards for RC430 Concrete Repair Mortar

  • ASTM C1583
  • BS EN 12636

Physical and Chemical Properties of RC430 Concrete Repair Mortar

RC430 concrete repair mortar has distinctive physical and chemical characteristics that make it ideal for repairing damaged concrete sections. These properties include:

  • Physical state: Powder or ready-to-use mortar with a grey color similar to freshly cast concrete.
  • Specific gravity: About 1.8 to 2.0 g/cm³, providing proper density and high strength.
  • Compressive strength: Over 40 MPa after 28 days, ensuring excellent structural performance.
  • Tensile and flexural strength: High, to prevent the formation of secondary cracks.
  • Adhesion to substrate: Very high, so separation does not occur at the interface between the new and old concrete.
  • Chemical composition: Contains modified cements, bonding polymers, anti-freeze additives, and fine mineral fillers to close pores and voids.
Property Specification
Form Powder
Color Grey
Specific Gravity 1.5 ± 5% g/cm³
Standards ASTM C1583 – BS EN 12636
Chloride Ion None
Solubility In water

Application Method of RC430 Concrete Repair Mortar

For proper use of RC430 concrete repair mortar, the following steps are recommended:

  1. Surface Preparation: Remove any loose concrete, dust, contaminants, and rust from rebar in the damaged area.
  2. Moistening the Surface: Before applying the mortar, dampen the surface without leaving free-standing water.
  3. Mixing: Combine the product powder with the specified amount of clean water and mix until a uniform mortar is obtained.
  4. Applying Mortar: Apply the mortar to the surface using a trowel or spatula, ensuring full compaction.
  5. Curing: Protect the repaired surface from rapid drying and carry out wet curing or use a curing compound.

Following these steps in order will ensure the cement-based repair mortar performs at its best.