WHITE SAND REP SR 150 is a high-strength, sulphate-resistant, structural cementitious repair compound. It is a ready-to-use, pre-mixed repair mortar formulated with Type V sulphate-resistant cement, selected graded aggregates, and special additives for repairing concrete structures exposed to sulphate attack.
WHITE SAND REP SR 150 is designed for:
- Structural concrete repairs
- Repairing concrete exposed to sulphate-rich environments
- Patch repairs for concrete floor slabs
- Filling voids deeper than 5 mm
- General structural concrete restoration
The product is ideal for repairing:
- Foundations exposed to sulphates
- Sewage treatment facilities
- Marine structures
- Industrial concrete structures
- Concrete floor slabs
- Infrastructure requiring sulphate resistance
Key benefits include:
- Sulphate-resistant formulation using Type V cement
- High compressive strength
- Excellent adhesion
- High durability
- Non-shrink performance
- Dimensionally stable
- Easy application
- Excellent workability
- Strong mechanical properties
- Reduced rebound and material loss during application
WHITE SAND REP SR 150 is manufactured with Type V sulphate-resistant cement, making it suitable for repairing concrete exposed to sulphate ions and aggressive environments where ordinary repair mortars may deteriorate.
Yes. WHITE SAND REP SR 150 can be applied up to 20 mm thick in a single application on vertical concrete surfaces.
Yes. It can be applied up to 50 mm thick in a single layer for horizontal concrete repairs and patch repairs.
Typical compressive strength values are:
- 40 MPa after 7 days
- 50 MPa after 28 days
according to ASTM C109.
WHITE SAND REP SR 150 achieves a tensile strength of 3.5 MPa or greater after 28 days according to ASTM C307.
The repair mortar provides a flexural strength of 5 MPa or greater after 28 days according to ASTM C348.
Mix approximately 3.8 liters of clean water with one 20 kg bag of WHITE SAND REP SR 150 to achieve the proper consistency.
Before application:
- Remove all weak or damaged concrete.
- Cut back to sound concrete to a minimum depth of 10 mm.
- Remove dust, grease, oil, rust, and contaminants.
- Saturate absorbent surfaces with clean water.
- Grit blast corroded reinforcing steel.
- Replace severely corroded reinforcement if required.
- Saw-cut repair edges.
- Thoroughly clean the repair area using a brush or compressed air.
Yes. Reinforcing steel should first be treated with a corrosion inhibitor. The prepared concrete substrate should then be primed using WHITE SAND PRIME RC acrylic primer and bonding agent. Apply the repair mortar while the primer remains tacky.
Slowly add the powder into the measured clean water while mixing with a grout mixer or slow-speed drill fitted with a high-shear paddle. Mix continuously for at least 3 minutes until a smooth, homogeneous mortar is obtained. Do not prepare partial mixes.
Apply the repair mortar by hand or using a steel trowel. Firmly press the mortar into the substrate to ensure complete compaction and excellent adhesion. Finish the surface initially with a wooden or plastic float, then complete the final finish using a steel float.
For thicker vertical applications, gradually build up the repair mortar in firmly pressed layers to ensure excellent adhesion between the substrate and each successive layer.
After application, cure the mortar by continuous water curing and covering it with polyethylene sheets, or use the WHITE SAND Cure curing compound to reduce moisture evaporation and improve strength development.
Clean all tools and equipment immediately with clean water before the mortar hardens. Hardened material can only be removed mechanically.
WHITE SAND REP SR 150 is supplied in 20 kg bags.
The product has a shelf life of 12 months when stored in unopened original packaging in a dry, shaded environment below 35°C.
Yes. Wear suitable protective gloves and safety goggles during handling and application. Avoid contact with skin and eyes. Wash exposed skin with soap and water, rinse eyes immediately with clean water if contact occurs, and seek medical advice if irritation persists. The product is non-flammable and is not classified as hazardous under current legislation.
Yes. Because it is formulated with Type V sulphate-resistant cement, WHITE SAND REP SR 150 is specifically developed for repairing concrete exposed to sulphate-bearing soils, groundwater, wastewater, marine environments, and industrial conditions.
Yes. Its high strength, excellent adhesion, dimensional stability, sulphate resistance, and durable cementitious formulation provide reliable long-term structural concrete repairs.
WHITE SAND REP SR 150 offers superior sulphate resistance, high compressive strength, excellent adhesion, compensated shrinkage, dimensional stability, durable structural performance, and easy application, making it an excellent choice for repairing concrete structures in aggressive environments where long-term durability is essential.
