Use Megapoxy H for: Concrete crack repairs, steel anchoring, underwater repairs, and creating high-strength epoxy mortars.
Megapoxy H is a versatile, low-viscosity, 100% solids epoxy resin designed for demanding applications in both wet and dry environments. Its hydrophilic properties make it ideal for underwater and splash zone repairs, while its high strength ensures durable bonds in concrete and steel anchoring. Compliant with AS/NZS 4020:2018 for potable water contact, Megapoxy H is also resistant to hydrogen sulfide, making it suitable for sewer and water treatment facilities. This VOC-free resin offers exceptional static and dynamic mechanical properties, enabling the creation of high-strength epoxy mortars for various repair and construction needs.
Key Features of Megapoxy H
- Hydrophilic Formulation: Bonds effectively to wet or dry concrete, ideal for underwater and splash zone repairs.
- Low Viscosity: Ensures excellent penetration into cracks and voids, improving crack repair and anchoring effectiveness.
- High Strength: Provides compressive strength of 100 MPa, tensile bond strength to steel of 20 MPa, and new to old concrete bonding of 36MPa, exceeding concrete's inherent strength.
- AS/NZS 4020:2018 Compliance: Safe for use in contact with drinking water, ensuring potable water safety.
- Chemical Resistance: Resists hydrogen sulfide, suitable for sewer and water treatment applications.
- VOC-Free: Environmentally friendly with no volatile organic compounds.
Technical Overview
Megapoxy H is formulated to provide exceptional bonding and mechanical properties. Its low viscosity allows for deep penetration into substrates, while its hydrophilic nature ensures strong adhesion in damp conditions. This combination makes it highly effective for crack repairs and steel anchoring.
Chemical Properties: 100% solids, resin-based, solvent-free, hydrophilic liquid epoxy resin. Provides excellent chemical resistance, including resistance to hydrogen sulphide.
Application Temperature Range: Minimum application temperature of 10°C (50°F). Cure times vary with temperature, from 48 hours at 15°C (59°F) to 12 hours at 35°C (95°F). Thin film cure at 25°C (77°F) is 5-6 hours.
Application Information
- Required Tools: Mixing containers, trowels, brushes, injection guns for crack repair, drilling equipment for steel anchoring, and grit blasting equipment for surface preparation.
- Trade-Specific Tips: Ensure thorough mixing of Part A and Part B to avoid curing issues. For crack repair, use low-pressure or pressure injection techniques based on crack depth and accessibility. Properly prepare surfaces by mechanical abrasion or acid etching for optimal bonding.
- Common Issues and Solutions: Incomplete curing can result from inaccurate mixing or low temperatures. Ensure precise mixing ratios and maintain application temperatures above 10°C (50°F). Poor bonding often results from inadequate surface preparation; follow recommended surface preparation guidelines.
Storage and Shelf Life
- Storage Requirements: Store in a cool, dry place away from direct sunlight.
- Shelf Life Information: Refer to the product packaging for specific shelf life details.
- Temperature Considerations: Avoid storing in extreme temperatures to prevent product degradation.
Certifications
- AS/NZS 4020:2018 “Testing of Products For Use In Contact with Drinking Water”.
Frequently Asked Questions About Megapoxy H
Q: How do I prepare concrete for Megapoxy H application?
A: Concrete should be free from grease and oil. Remove surface laitance by mechanical abrasion (grit blasting, grinding) or acid etching. Ensure the surface is clean and dry for optimal adhesion.
Q: What are the key benefits of using Megapoxy H in wet conditions?
A: Megapoxy H is hydrophilic, meaning it bonds effectively to wet concrete. This makes it ideal for underwater repairs and applications in damp environments, ensuring strong and durable bonds.
Q: Can Megapoxy H be used for steel anchoring?
A: Yes, Megapoxy H is excellent for steel anchoring. Drill holes 1.5 times the steel diameter, clean thoroughly, and pour the mixed resin. Grit blast and degrease the steel for best results.
Q: What is the mixing ratio for Megapoxy H?
A: The mixing ratio is 3 parts Part A to 1 part Part B by volume. Accurate mixing is essential for proper curing and performance.
Q: What is the compressive strength of cured Megapoxy H?
A: The compressive strength of cured Megapoxy H is 100 MPa, providing a very strong and durable repair or anchoring solution.
Use Megapoxy H for:
- Concrete crack repair (low and high pressure injection).
- Steel anchoring into concrete.
- Underwater and splash zone repairs.
- Creating high-strength epoxy mortars and concrete.
- New to old concrete bonding.
- Floor repairs.
- Coatings.
Why Use Megapoxy H:
- Provides a strong, durable bond in wet and dry conditions.
- Offers high compressive and tensile strength, surpassing concrete's capabilities.
- Complies with AS/NZS 4020:2018 for potable water contact.
- Resistant to hydrogen sulfide, suitable for sewer applications.
- VOC-free, making it an environmentally friendly choice.
- Versatile application for a wide range of concrete and steel repairs.
How to apply Megapoxy H:
- Surface Preparation: Clean and prepare the substrate as per the recommendations (mechanical abrasion, acid etching, or grit blasting).
- Mixing: Mix Part A and Part B in a 3:1 volume ratio thoroughly.
- Application: Apply the mixed resin by pouring, brushing, rolling, or injection, depending on the application.
- Curing: Allow the resin to cure for the specified time based on the ambient temperature.
Megapoxy H limitations:
- Accurate mixing ratios are crucial for proper curing.
- Surface preparation is essential for optimal bonding.
- Application temperature should be above 10°C (50°F).
Safety precautions when using Megapoxy H:
- Personal Protective Equipment: Wear gloves, eye protection, and respiratory protection in poorly ventilated areas.
- Ventilation: Ensure adequate ventilation during mixing and application.
- Handling: Avoid skin and eye contact. Wash hands thoroughly after use.
- Refer to the Megapoxy H Safety Data Sheets for comprehensive safety information.
Megapoxy H can be used on the following substrates:
- Concrete: Ensure surfaces are clean and properly prepared.
- Steel: Grit blast and degrease for optimal bonding.
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