Description
M-PRIME 104 - Damp Tolerant Concrete Primer
M-PRIME 104 – DAMP TOLERANT CONCRETE PRIMER Is a solvent-free clear epoxy primer suitable for the application to concrete surfaces with a moisture content up to 25%.
MPR 104 – penetrates deep in to the concrete and has excellent bond strength. The primer is applied as a single coat in most instances, but very porous concrete may require a second coat.
Typically, the product is used to consolidate concrete before the application of other coating materials usually epoxy, polyurethane or acrylic floor coatings.
But is also used as a bonding agent for epoxy concrete repair mortars or as a clear sealer for worn concrete to suppress any dust.
Typical Uses
- Concrete Floors
- Concrete Tanks & Reservoirs
- Chemical & Fuel Bunds
- Concrete Sumps Channel & Drains
Please contact us to discuss your project before purchasing this material to confirm suitability.
Application Guide
- Remove any surface contamination and lightly abrasive blast or scarify using mechanical hand tools taking care not to expose the aggregate.
- Allow new concrete to cure for a minimum 21 days and remove any surface laitance before coating.
Prior to mixing please ensure the following:
- Ensure the moisture content of the concrete is below 25%.
- Suitable for applications where the surface temperature is 5°C or above
Mix the base component with the activator component in full units as supplied, ideally use slow speed paddle mixer.
When mixing both materials, it is essential to have a uniform streak free fluid.
Once mixed, the material should be used within 30-40 minutes at 20°C.
- Apply the mixed material directly to the prepared surface using a brush, roller or standard airless spray.
- Normally a single coat is enough but for very porous surface an additional coat may be required.
| Appearance | Base Activator Mixed | Clear pale yellow liquid Amber liquid Pale amber liquid |
| Mixing Ratio | By Weight By Volume | 1.65:1 3:2 |
| Density | Base Activator Mixed | 1.15 1.02 1.08 |
| Solids Content | 100% | |
| Sag Resistance | Nil at | 150 microns |
| Usable Life | 10°C 20°C 30°C | 90 minutes 45 minutes 22.5 minutes |
| Coverage | At 150 microns the theoretical coverage rate is | 6.66m² per ltr |
| Cure Times at 20°C | Minimum overcoating time Maximum overcoating time | 8 hours 36 hours |
| Storage Life | Unopened and stored in dry conditions (15-30°C) | 5 years |
| Pull off adhesion | Elcometer pull off adhesion tester | Dry 525psi 37kg/cm² (cohesive in substrate) Wet 475psi 33.4 kg/cm² (cohesive in substrate) |
| Compressive Strength | Tested to ASTM D 695 | 629kg/cm² (8945psi) |
| Flexural Strength | Tested to ASTM D790 | 371kg/cm² (5275psi) |
| Hardness | Shore D to ASTM D2240 | 84 |
| Tensile Shear | Tested to ASTM D1002 | On abrasive blasted mild steel with 75 micron profile – 201 kg/cm² (2860 psi) On rusted steel – 167 kg/cm² (2375 psi) |
| Heat Resistance | Suitable for use in immersed conditions at temperatures up to: Suitable for use in dry conditions at temperatures up to dependant on load: | 60°C 150°C |
