Use Megapoxy H for: Concrete crack repairs, steel anchoring, and potable water applications with a low viscosity, hydrophilic epoxy resin.
Megapoxy H is a low viscosity, 100% solids, resin-based epoxy designed for structural repairs and potable water applications. Its hydrophilic properties and low viscosity (800 cps) allow for deep penetration into cracks and porous materials, ensuring strong and durable bonds even in damp conditions. Compliant with AS/NZS 4020:2018, Megapoxy H is safe for use in contact with drinking water, making it ideal for repairs in water treatment facilities and potable water pipelines. With a high modulus of elasticity (11 GPa) and compressive strength (100 MPa), it provides exceptional structural integrity for concrete crack repairs, steel anchoring, and epoxy mortars. This solvent-free, VOC-free formulation prioritises applicator safety and environmental responsibility.
Primer Information: Surface preparation is critical. Concrete should be free from grease and laitance, requiring mechanical abrasion or acid etching. Metal surfaces should be grit blasted to AS CK 9.4 standards. Coated surfaces should be removed.
Cure Time: Cure times vary with temperature: 12 hours at 35°C, 24 hours at 25°C, and 48 hours at 15°C. Thin film cure time at 25°C is 5-6 hours. Ensure proper curing before subjecting bonded materials to stress. At 25 degrees, the working time is 30 minutes.
Coverage Rate: Coverage depends on application method and surface porosity. Its low viscosity allows for deep penetration, enhancing coverage efficiency.
Application Temperature Range: Apply between 10°C and 35°C for optimal results. Ensure substrate temperatures are within this range during application and curing.
Chemical Properties: This epoxy resin offers excellent chemical resistance, including resistance to hydrogen sulfide. Its VOC-free formulation ensures compliance with Australian safety standards.
Key Features of Megapoxy H
- Hydrophilic Properties: Allows bonding in damp or wet conditions, essential for underwater and splash zone repairs.
- Low Viscosity (800 cps): Ensures deep penetration into cracks and porous materials, enhancing bond strength.
- Complies with AS/NZS 4020:2018: Safe for use in contact with drinking water, suitable for potable water applications.
- High Modulus of Elasticity (11 GPa): Provides exceptional stiffness and structural integrity for demanding repairs.
- VOC-Free Formulation: Prioritises applicator safety and environmental compliance.
Why Choose Megapoxy H:
- Superior Penetration: Low viscosity ensures deep penetration and strong bonding.
- Versatile Application: Suitable for concrete repairs, steel anchoring, and epoxy mortars.
- Safe for Potable Water: Complies with AS/NZS 4020:2018 for drinking water contact.
- Reliable Performance: High strength and durability for long-term structural integrity.
When to Choose Megapoxy H versus Alternatives:
- Choose Megapoxy H over standard epoxy resins when: Application involves contact with drinking water or requires deep penetration into cracks and damp substrates.
- Consider other options when: High viscosity is necessary for thick coatings or gap-filling, as Megapoxy H has low viscosity for penetration.
Trade-Specific Applications for Megapoxy H:
For Civil Construction:
- Concrete Crack Repair: Seals and strengthens cracks in concrete structures, preventing further deterioration.
- Steel Anchoring: Provides robust anchoring for steel components into concrete.
- Floor Repairs: Repairs and strengthens damaged concrete floors.
For Water Treatment Professionals:
- Potable Water Facility Repairs: Safe and compliant repairs in drinking water storage and treatment systems.
- Sewerage Treatment: Resistant to hydrogen sulfide, making it suitable for repairs in sewerage infrastructure.
Application Information
- Required Tools: Mixing containers, brushes, rollers (for coating), injection equipment (for crack repair), Megapoxy Thinners for cleanup, disposable rubber gloves.
- Trade-Specific Tips: Ensure thorough mixing of Part A and Part B in the correct 3:1 ratio. For crack repair, use appropriate techniques like low-pressure or pressure injection.
- Common Issues and Solutions: Inaccurate mixing can lead to poor curing. Surface preparation is critical for adhesion; remove laitance and contaminants from concrete and ensure steel is grit blasted or abraded.
Storage and Shelf Life
- Storage Requirements: Store in a cool, dry environment away from direct sunlight.
- Shelf Life Information: Refer to product packaging for specific shelf life.
- Temperature Considerations: Store at temperatures that avoid extremes to maintain product integrity.
Certifications and Compliance
- AS/NZS 4020:2018 Compliance: Certified for use in contact with drinking water.
- VOC Free: Complies with Australian environmental and safety regulations.
- ASTM Standards Compliance: Meets ASTM D695, D4541, D897, D790, D638, D1002, and D2240-00 standards.
Frequently Asked Questions About Megapoxy H
Q: Can Megapoxy H be used for underwater concrete repair?
A: While Megapoxy H has hydrophilic properties, it's essential to consider the specific underwater conditions. For dedicated underwater repairs, consult Megapoxy's technical data sheets for specialized underwater epoxy systems. Megapoxy H is primarily designed for damp surface bonding and crack injection.
Q: How do I apply Megapoxy H for crack injection?
A: For crack injection, prepare the concrete, install injection ports, seal the crack surface with Megapoxy PM, and then inject Megapoxy H using an injection gun. Follow the detailed procedures outlined in the technical data sheet for low-pressure or pressure injection methods.
Q: What is the mixing ratio for Megapoxy H?
A: The correct mixing ratio is 3 parts of Part A to 1 part of Part B by volume. Accurate measurement and thorough mixing are crucial for proper curing and performance.
Q: Is Megapoxy H suitable for use in contact with drinking water?
A: Yes, Megapoxy H complies with AS/NZS 4020:2018, "Testing of Products For Use In Contact with Drinking Water," making it safe for use in potable water applications.
Q: Can Megapoxy H be used to create epoxy mortars?
A: Yes, Megapoxy H can be mixed with fine aggregates like Silica 50N to create high-strength epoxy mortars for various repair and resurfacing applications. Refer to the technical data sheet for specific mixing ratios and application guidelines.
Q: What safety precautions should I take when using Megapoxy H?
A: Wear appropriate personal protective equipment (PPE), including gloves and eye protection. Ensure adequate ventilation. Avoid skin and eye contact. Refer to the Safety Data Sheet (SDS) for detailed safety information and handling procedures.
Use Megapoxy H for:
- Concrete Crack Repair: Effectively sealing and strengthening cracks in concrete structures, preventing further deterioration and water ingress.
- New to Old Concrete Bonding: Creating a strong and durable bond between new and old concrete, ensuring structural integrity in construction and repair projects.
- Steel Anchoring: Providing robust and reliable anchoring for steel bolts and bars in concrete, crucial for structural connections.
- Epoxy Mortars: Formulating high-strength epoxy mortars for concrete repairs, resurfacing, and other applications requiring enhanced durability.
Why Use Megapoxy H for:
- Superior Penetration: Low viscosity allows for deep penetration into cracks and porous concrete, ensuring a strong and lasting bond.
- Potable Water Safe: Complies with AS/NZS 4020:2018, making it suitable for use in contact with drinking water, ensuring safety and compliance.
- High Strength: Excellent compressive and tensile strength provides structural integrity and durability in demanding applications.
- Versatile Application: Can be used for various concrete repair and bonding applications, reducing the need for multiple products.
How to apply Megapoxy H:
- Prepare Surfaces: Ensure concrete and steel surfaces are clean, dry, and free from contaminants. Remove laitance from concrete using mechanical abrasion or acid etching. Prepare steel surfaces by grit blasting or mechanical abrasion.
- Mix Components: Combine Part A and Part B in a 3:1 ratio by volume, mixing thoroughly for 2-3 minutes until a uniform consistency is achieved.
- Apply Megapoxy H: Apply the mixed resin using a brush, roller, injection equipment, or other appropriate method, depending on the application.
- Cure: Allow the resin to cure for the specified time (12-48 hours, depending on temperature) before subjecting the repaired area to load or stress.
- Clean Up: Clean tools and spills immediately with Megapoxy Thinners.
Megapoxy H limitations:
- Mixing Accuracy: Requires precise mixing ratios for optimal performance. Incorrect ratios can lead to incomplete curing and reduced strength.
- Surface Preparation: Thorough surface preparation is crucial for achieving a strong bond. Inadequate surface preparation can result in adhesion failure.
- Working Time: Has a limited working time, especially in higher temperatures, requiring prompt application after mixing.
Safety precautions when using Megapoxy H:
- Personal Protective Equipment: Wear chemical-resistant gloves, eye protection (goggles or face shield), and respiratory protection if working in poorly ventilated areas.
- Ventilation: Ensure adequate ventilation to minimise inhalation of vapours.
- Handling: Avoid skin and eye contact. Wash hands thoroughly after handling the product.
- First Aid: In case of skin contact, wash with soap and water. If in eyes, flush with plenty of water for at least 15 minutes and seek medical attention. If ingested, do not induce vomiting and seek medical attention immediately.
- Disposal: Dispose of waste materials according to local Australian regulations for hazardous chemical waste.
Megapoxy H can be used on the following substrates:
- Concrete: For bonding new to old concrete, crack repairs, and general concrete repairs. Proper surface preparation is essential for optimal adhesion in Australian construction.
- Steel: For anchoring steel into concrete, providing strong and durable connections in structural applications.
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