Megapoxy H is a low-viscosity, hydrophilic epoxy liquid for bonding new concrete to existing concrete, anchoring steel and repairing cracks in damp or wet conditions. It complies with AS/NZS 4020:2018 for structures in contact with drinking water.
Use H for wet-to-dry concrete bonding, low-pressure crack injection, floor repairs and structural epoxy mortars made with fine aggregate. The liquid wets prepared concrete and steel and can be used for underwater and splash-zone repairs; it is also resistant to hydrogen sulphide found in sewage infrastructure.
Choose H when you need a flowable hydrophilic bonding resin. Megapoxy HT is the non-sag gel for thicker, vertical or overhead applications. Megapoxy HX has a much thinner 200 cps mixed viscosity for fine-crack penetration, compared with H at approximately 800 cps.
Remove contaminants and weak surface layers before bonding. Mix three parts A to one part B by volume and use within 30 minutes at 25°C. Minimum cure is 24 hours at 25°C. Do not apply below 10°C.
Can Megapoxy H be used on wet concrete?
Yes. H is hydrophilic and is intended for wet-to-dry concrete bonding, underwater and splash-zone repairs.
What is the difference between Megapoxy H, HT and HX?
H is a flowable hydrophilic resin at about 800 cps; HT is a non-sag hydrophilic gel; HX is an extra-low-viscosity liquid at about 200 cps for finer cracks.
Can Megapoxy H be used in drinking-water structures?
Yes. H complies with AS/NZS 4020:2018 for contact with drinking water.
| Property | Value |
|---|---|
| Mixing Ratio By Volume Part A To Part B | 3:1 |
| Work Time At 25C | 30 minutes |
| Minimum Cure Time At 15C | 48 hours |
| Minimum Cure Time At 25C | 24 hours |
| Minimum Cure Time At 35C | 12 hours |
| Thin Film Cure At 25C | 5-6 hours |
| Application Temperature | 10°C |
| Viscosity Part A At 25C | 1300 - 1900 cps |
| Viscosity Part B At 25C | 75 - 90 cps |
| Mixed Viscosity At 25C | 800 cps |
| Density Part A At 25C | 1.12 - 1.14 g/cm³ |
| Density Part B At 25C | 0.97 – 0.99 g/cm³ |
| Mixed Density At 25C | 1.09 g/cm³ |
| Compressive Strength | 120MPa |
| Ultimate Compressive Strength ASTM C579 | 120 MPa |
| Bond Strength | >3 MPa |
| Tensile Bond Strength Steel ASTM D897 | 18 MPa |
| Modulus | 1.7 GPa |
| Flexural Strength | 59 MPa |
| Tensile Strength | 57 MPa |
| Tensile Lap Shear Strength ASTM D1002 | 7 MPa (steel to steel) |
| Shore D Hardness | 75 minimum |
| Surface Resistivity | 10¹² Ohm |
| Volume Resistivity | 2.2 x 10¹¹ Ohm.cm |
| VOC Content | 2 g/l |
| Water Vapour Transmission | 0.095 g/hr m² |
| Water Resistance | 0.184 % increase in weight |
| Mixing Ratio | 3 Part A to 1 Part B |
| Pot Life | 30 minutes |
| Viscosity | 800cps |
| Specific Gravity | 1.09 |
| Compressive Strength at Yield | 92MPa |
Here are some common examples on where Megapoxy H used by our customers.
