FAQ: White Sand REP FR200

1. What is WHITE SAND REP FR 200?

WHITE SAND REP FR 200 is a high-strength, fiber-reinforced, polymer-modified, micro silica-enhanced cementitious structural repair mortar. It is a ready-to-use, pre-mixed repair compound designed for repairing damaged reinforced concrete structures with excellent mechanical strength and durability.

2. What is WHITE SAND REP FR 200 used for?

WHITE SAND REP FR 200 is used for:

  • Structural concrete repairs
  • Repairing damaged reinforced concrete
  • Honeycomb repairs
  • Vertical concrete repairs
  • Overhead concrete repairs
  • Horizontal concrete repairs
  • Patch repairs
  • Repairing deteriorated concrete structures
3. What types of concrete repairs is WHITE SAND REP FR 200 suitable for?

The product is ideal for:

  • Broken structural concrete elements
  • Honeycombed concrete
  • Spalled concrete
  • Damaged reinforced concrete
  • Concrete patch repairs
  • Structural rehabilitation projects
4. What are the main advantages of WHITE SAND REP FR 200?

Key benefits include:

  • High structural strength
  • Fiber-reinforced formulation
  • Polymer modification
  • Micro silica enhancement
  • Non-shrink performance
  • Excellent adhesion
  • Low permeability
  • Corrosion protection for reinforcement
  • Suitable for horizontal, vertical, and overhead applications
  • Easy hand application
5. Can WHITE SAND REP FR 200 be applied on vertical surfaces?

Yes. WHITE SAND REP FR 200 can be applied in a single layer up to 75 mm thick on vertical concrete surfaces because of its thixotropic, non-slump properties.

6. Can WHITE SAND REP FR 200 be used for overhead repairs?

Yes. It is suitable for overhead concrete repairs up to 40 mm thick in a single application.

7. Can WHITE SAND REP FR 200 be used for horizontal repairs?

Yes. The repair mortar can be applied up to 100 mm thick in a single layer for horizontal and patch repair applications.

8. Does WHITE SAND REP FR 200 comply with international standards?

Yes. WHITE SAND REP FR 200 complies with BS EN 1504-3 Class R3, making it suitable for structural concrete repair applications.

9. What is the compressive strength of WHITE SAND REP FR 200?

Typical compressive strength values are:

  • 30 MPa or greater after 7 days
  • 55 MPa or greater after 28 days (ASTM C109)
10. What is the bond strength of WHITE SAND REP FR 200?

The product provides a bond strength of 1.8 MPa or greater after 28 days, ensuring excellent adhesion to existing concrete.

11. What is the flexural strength of WHITE SAND REP FR 200?

WHITE SAND REP FR 200 achieves a flexural strength of 6 MPa or greater after 28 days according to ASTM C348.

12. Is WHITE SAND REP FR 200 environmentally friendly?

Yes. The product has a VOC content below 10 g/L, making it LEED compliant and suitable for sustainable construction projects.

13. How should the substrate be prepared before application?

Before application:

  • Remove damaged concrete.
  • Cut back repairs to sound concrete (minimum 10 mm depth).
  • Clean all contaminants.
  • Saturate absorbent substrates with clean water.
  • Remove rust from reinforcing steel by grit blasting.
  • Replace severely corroded reinforcement if necessary.
  • Saw-cut repair edges.
  • Clean thoroughly with a brush or compressed air.
14. Is priming required before applying WHITE SAND REP FR 200?

Yes. Steel reinforcement should be coated with a corrosion inhibitor, and the prepared concrete should receive WHITE SAND PRIME RC acrylic primer and bonding agent. Apply the repair mortar while the primer is still tacky.

15. How do you mix WHITE SAND REP FR 200?

Mix approximately 4 liters of clean water per 25 kg bag. Slowly add the powder while mixing with a grout mixer or slow-speed drill fitted with a high-shear paddle. Mix for at least 3 minutes until a homogeneous consistency is achieved. Do not prepare partial mixes.

16. How is WHITE SAND REP FR 200 applied?

Apply the mortar by hand or with a steel trowel. Firmly compact it against the substrate and reinforcing steel to ensure proper adhesion. Finish initially with a wooden or plastic float and complete the surface with a steel float. For thicker vertical or overhead repairs, apply gradually in multiple hand-pressed patches.

17. How should WHITE SAND REP FR 200 be cured?

Cure the repair mortar by continuously watering and covering it with polyethylene sheets, or use WHITE SAND Cure curing compound to reduce water evaporation and ensure proper strength development.

18. Can WHITE SAND REP FR 200 protect reinforcing steel?

Yes. Its extremely low permeability helps protect reinforcing steel against corrosion while minimizing the ingress of water and contaminants.

19. What packaging is WHITE SAND REP FR 200 available in?

WHITE SAND REP FR 200 is supplied in 20 kg bags.

20. What is the shelf life of WHITE SAND REP FR 200?

The product has a shelf life of 12 months when stored in unopened original packaging in a dry, shaded environment below 35°C.

21. How should tools be cleaned after application?

Clean all tools and equipment immediately with clean water before the mortar hardens. Hardened material can only be removed mechanically.

22. Is WHITE SAND REP FR 200 safe to use?

Yes. Wear suitable gloves and safety goggles during handling and application. Avoid direct skin and eye contact. Wash exposed skin with soap and water, rinse eyes thoroughly if contact occurs, and seek medical advice for persistent irritation. The product is non-flammable and is not classified as hazardous under current legislation.

23. Why is WHITE SAND REP FR 200 suitable for structural concrete repair?

Its fiber reinforcement, polymer modification, high compressive strength, excellent bond strength, non-shrink characteristics, low permeability, and compliance with BS EN 1504-3 Class R3 make it ideal for demanding structural concrete repair applications.

24. Why choose WHITE SAND REP FR 200 over conventional repair mortars?

WHITE SAND REP FR 200 offers superior structural performance, excellent adhesion, high mechanical strength, low permeability, corrosion protection for reinforcement, easy application on vertical and overhead surfaces, non-shrink properties, and long-term durability, making it an excellent solution for professional concrete repair and restoration projects.

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