Description

Technical Data Sheet

HARD CURING 4000

Liquid Membrane-Forming Concrete Curing Compound

1. Product Description

Hard Curing 4000 is a highly efficient liquid curing compound that forms a thin membrane over the concrete surface to prevent rapid water evaporation. It helps reduce premature shrinkage cracking, increases the final strength of the concrete, and ensures proper curing according to ASTM specifications.

2. Key Features

Reduces water loss from concrete during the first 72 hours.

Maintains concrete moisture and prevents premature cracking.

Ready to use and requires no thinning.

Coveres large areas with a simple and easy application.

Provides a uniform surface after curing.

Suitable for hot and dry climates.

Complies with ASTM C309.

3. Applications

Factory and warehouse floors.

Pavements and roads.

Precast concrete. Concrete foundations and slabs.

Structural dams and channels.

High-performance concrete:

4. Application Method

1) Surface Preparation
Apply the product immediately after the concrete has been leveled and bleeding has stopped.

The surface must be clean and free of free water.

2) Mixing
The product is ready to use; simply shake before application.

3) Application
Use a manual or mechanical sprayer or a soft brush.

Spray in a uniform layer without pooling.

Consumption Rate:
5–8 m² per liter, depending on surface roughness.

4) Drying

Initial drying time: 30–60 minutes.

Do not walk on the surface or apply additional layers for 24 hours.

5. Technical Specifications

Typical Value

Appearance: Milky or clear liquid, depending on the formula.
Density: 0.95–1.05 g/cm³
Coverage: 5–8 m²/L
Drying Time: 30–60 minutes
Compliance with ASTM C309
Water Loss (ASTM C309): Less than 0.55 kg/m² over 72 hours

6. Storage

Store in a cool, dry place away from direct sunlight.

Ideal Storage Temperature: 5°C–35°C.

Store in its original, unopened container.

Shelf Life: 12 months from the date of production if stored correctly.

7. Packaging

200-Liter Plastic Drum
Approximate Gross Weight: 210–215 kg, depending on density. 30-Liter Plastic Jerrycan
Approximate Total Weight: 31-32 kg

Also available in 20-liter and 5-liter containers upon request.

8. Important Notes

Do not apply to surfaces to be painted until a compatibility test has been conducted.

Do not apply to waterlogged concrete.

Avoid application during rain or strong winds.

Test a small sample before full application.

9. Safety

Wearing gloves and safety glasses is recommended during application.

Avoid direct contact with eyes and skin.

In case of ingestion or severe exposure, seek medical attention immediately.

10. ASTM Compliance

This product is designed to meet the requirements of:
ASTM C309 – Liquid Membrane-Forming Compounds for Curing Concrete